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authorRoger Frank <rfrank@pglaf.org>2025-10-14 18:59:54 -0700
committerRoger Frank <rfrank@pglaf.org>2025-10-14 18:59:54 -0700
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+<body>
+<div>*** START OF THE PROJECT GUTENBERG EBOOK 44824 ***</div>
+<h1>The Project Gutenberg eBook, Sign of the Green Arrow, by Roy J. (Roy
+Judson) Snell</h1>
+<p>&nbsp;</p>
+<h3 class="pg">E-text prepared by<br />
+ Stephen Hutcheson, Rod Crawford, Dave Morgan,<br />
+ and the Online Distributed Proofreading Team<br />
+ (http://www.pgdp.net)</h3>
+<p>&nbsp;</p>
+<hr class="full" />
+<p>&nbsp;</p>
+
+<div class="img">
+<img id="coverpage" src="images/cover.jpg" alt="Sign of the Green Arrow" width="500" height="683" />
+</div>
+<div class="img">
+<img src="images/icover.jpg" alt="Sign of the Green Arrow" width="500" height="723" />
+</div>
+<div class="box">
+<p class="center"><span class="large"><b><i><span class="u">A Mystery Story</span></i></b></span></p>
+<h1>SIGN OF THE
+<br />GREEN ARROW</h1>
+<p class="center"><i>By</i>
+<br />ROY J. SNELL</p>
+<div class="img" id="logo"><img src="images/logo.jpg" alt="Author&rsquo;s Logo" width="200" height="91" /></div>
+<p class="tbcenter">Reilly &amp; Lee
+<br /><span class="small">Chicago</span></p>
+<p class="center"><span class="small">COPYRIGHT 1939
+<br />BY
+<br />REILLY &amp; LEE
+<br />PRINTED IN THE U.S.A.</span></p>
+</div>
+<h2>CONTENTS</h2>
+<dl class="toc">
+<dt class="jr"><span class="jl"><span class="small">CHAPTER</span></span> <span class="small">PAGE</span></dt>
+<dt><a href="#c1">I &ldquo;This is Our Secret&rdquo;</a> 11</dt>
+<dt><a href="#c2">II Spooky Waters</a> 22</dt>
+<dt><a href="#c3">III A Bright Eyed Beach-Comber</a> 34</dt>
+<dt><a href="#c4">IV Spies</a> 46</dt>
+<dt><a href="#c5">V Whispering Depths</a> 54</dt>
+<dt><a href="#c6">VI Real Progress!</a> 73</dt>
+<dt><a href="#c7">VII Mystery Singers of the Night</a> 82</dt>
+<dt><a href="#c8">VIII Monster of the Deep</a> 96</dt>
+<dt><a href="#c9">IX Dave&rsquo;s Electric Gun</a> 105</dt>
+<dt><a href="#c10">X Little Big-Heads</a> 115</dt>
+<dt><a href="#c11">XI Tigers of the Sea</a> 125</dt>
+<dt><a href="#c12">XII Johnny&rsquo;s Day Off</a> 136</dt>
+<dt><a href="#c13">XIII The Green Arrow Trail</a> 150</dt>
+<dt><a href="#c14">XIV An Important Discovery</a> 161</dt>
+<dt><a href="#c15">XV Adrift in the Depths</a> 167</dt>
+<dt><a href="#c16">XVI Voice of Drums</a> 174</dt>
+<dt><a href="#c17">XVII Marching on the Castle</a> 183</dt>
+<dt><a href="#c18">XVIII The Battle</a> 192</dt>
+<dt><a href="#c19">XIX On the Bottom</a> 204</dt>
+</dl>
+<div class="pb" id="Page_11">[11]</div>
+<h1 title="">SIGN OF THE GREEN ARROW</h1>
+<h2 id="c1"><span class="small">CHAPTER I</span>
+<br />&ldquo;THIS IS OUR SECRET.&rdquo;</h2>
+<p>It was midnight. Johnny Thompson paced
+the deck of the <i>Sea Nymph</i> alone. He would
+be doing this until daybreak. The tropical night
+was glorious. There was a faint breeze&mdash;just
+enough to ripple the waters where the phosphorescent
+light thrown off by a million tiny
+creatures rivaled the stars above.</p>
+<div class="pb" id="Page_12">[12]</div>
+<p>&ldquo;Spooky,&rdquo; he thought, meditatively. &ldquo;Out
+here all alone with the night.... Natives over
+there.&rdquo; He faced the east, where dark green
+hills loomed out of the water. Over there was
+a small island. Johnny never had been there.
+Some time he&rsquo;d get into a canoe and paddle
+over. Earlier in the evening he had seen a light,
+a white man&rsquo;s light, he had thought, without
+knowing why. He&mdash;</p>
+<p>His thoughts were interrupted by someone
+moving, up forward. Or was there? He had
+supposed they all were asleep&mdash;the strange old
+man, bony and tall, with goggle eyes and heavy
+glasses, the tall young man and the blonde girl.
+They all had berths forward. The captain and
+mate were aft; the native crew, below deck.
+There was no need for any of the crew, now.
+The boat was anchored. Only he, Johnny
+Thompson, was needed, to keep watch for
+prowlers of the sea, or signs of a storm.</p>
+<p>It was strange, this new job. He was not sure
+just what these people were planning&mdash;some
+scientific expedition, he thought. The ship&rsquo;s
+outfit was rather irregular, but he had been
+glad of the chance to sign up as watch. He
+loved the sea.</p>
+<p>&ldquo;Someone&mdash;&rdquo; he said to himself, &ldquo;&mdash;is moving,
+up there.&rdquo; He started forward, cautiously.</p>
+<div class="pb" id="Page_13">[13]</div>
+<p>He had covered only half the hundred and
+twenty-five foot length of deck when suddenly
+he beheld the girl of the party.</p>
+<p>&ldquo;Walking in her sleep,&rdquo; Johnny thought, with
+a touch of alarm. But she wasn&rsquo;t.</p>
+<p>&ldquo;Hello!&rdquo; She poked a hand from beneath her
+midnight-blue dressing gown. &ldquo;It&rsquo;s too swell a
+night to sleep.&rdquo;</p>
+<p>&ldquo;Yes,&rdquo; Johnny agreed.</p>
+<p>&ldquo;You&rsquo;re not a regular watch, are you?&rdquo; she
+asked.</p>
+<p>&ldquo;That&mdash;er&mdash;&rdquo; Johnny hesitated. &ldquo;That&rsquo;s not
+my regular job. Nothing is. Does that matter?&rdquo;</p>
+<p>&ldquo;No, I suppose not. Anyhow nothing could
+happen, here.&rdquo;</p>
+<p>&ldquo;Plenty could happen,&rdquo; he contradicted,
+quietly.</p>
+<p>&ldquo;How do you know?&rdquo;</p>
+<p>&ldquo;I&rsquo;ve been in the Tropics before. Natives get
+ugly sometimes. They imagine white men are
+getting the best of them&mdash;which, for the most
+part, they are!&rdquo; Johnny laughed. &ldquo;Then there
+are storms,&rdquo; he went on. &ldquo;Wildest place for
+storms you&rsquo;ve ever seen. Once I drifted before
+a storm for thirty-six hours in a boat just
+about like this, only&mdash;&rdquo; he hesitated, &ldquo;it was
+different.&rdquo;</p>
+<div class="pb" id="Page_14">[14]</div>
+<p>&ldquo;Yes,&rdquo; the girl laughed, &ldquo;it must have been,
+as there&rsquo;s not another boat quite like this in
+all the world, I guess. It&mdash;</p>
+<p>&ldquo;Look!&rdquo; she exclaimed softly, pointing toward
+the distant island. &ldquo;What&rsquo;s that strange
+light?&rdquo;</p>
+<p>&ldquo;Light?&rdquo; Johnny spun round. &ldquo;Oh! Say&mdash;that
+<i>is</i> strange! It&rsquo;s green. A green light.&rdquo;</p>
+<p>&ldquo;Like an arrow,&rdquo; the girl whispered. &ldquo;Green
+arrow of the Tropics. Quite romantic! But
+what can it be?&rdquo;</p>
+<p>&ldquo;It&rsquo;s not for us,&rdquo; said Johnny. &ldquo;It&mdash;it seems
+to blink. Wait!&rdquo;</p>
+<p>Retracing his steps he went to a box of life-preservers
+where he had left his heavy field
+glass. He returned quickly to her side.</p>
+<p>&ldquo;Now,&rdquo; he invited, &ldquo;have a look!&rdquo; He held
+the glass in position for her.</p>
+<p>&ldquo;It&mdash;it <i>does</i> blink,&rdquo; she murmured. &ldquo;It&rsquo;s like
+an electric sign. Some lights go off; others go
+on!&rdquo;</p>
+<div class="pb" id="Page_15">[15]</div>
+<p>&ldquo;Let&rsquo;s see.&rdquo; Johnny took the glass. &ldquo;Why&mdash;it&rsquo;s
+some sort of signalling,&rdquo; he decided at once.
+&ldquo;But not for <i>us</i>!&rdquo;</p>
+<p>Instinctively they turned to scan the sea.</p>
+<p>&ldquo;There&rsquo;s no other boat out there,&rdquo; said Johnny.
+&ldquo;At least there wasn&rsquo;t any at sunset. If
+one had moved in, we&rsquo;d see the light.&rdquo;</p>
+<p>&ldquo;If there were a light,&rdquo; whispered the girl,
+&ldquo;how gorgeously mysterious it&rsquo;d be. How&mdash;</p>
+<p>&ldquo;Look!&rdquo; she exclaimed. &ldquo;Do you see it? A
+green arrow out there on the sea?&rdquo;</p>
+<p>&ldquo;No&mdash;oo,&rdquo; Johnny said, after a moment of
+gazing. &ldquo;I can&rsquo;t see it. Must have been a reflection
+of that other light. That often happens,
+you&mdash;&rdquo;</p>
+<p>&ldquo;No!&rdquo; The girl said, emphatically. &ldquo;There!
+I saw it again!&rdquo;</p>
+<p>&ldquo;Perhaps I&rsquo;m color-blind,&rdquo; said Johnny after
+another long look. &ldquo;But I just don&rsquo;t see it!&rdquo;</p>
+<p>At that he turned around to continue his
+study of that land light.</p>
+<p>&ldquo;It&rsquo;s strange,&rdquo; he murmured. &ldquo;I can&rsquo;t quite
+count the lights, but they <i>do</i> go on and off.
+Irregularly, too. It must be a signal. But what
+are they saying?&rdquo;</p>
+<div class="pb" id="Page_16">[16]</div>
+<p>&ldquo;And to whom?&rdquo; the girl added.</p>
+<p>&ldquo;Well,&rdquo; she sighed a moment later, &ldquo;we&rsquo;ll not
+learn the answer, at least not tonight. Because
+it&rsquo;s gone!&rdquo;</p>
+<p>&ldquo;So it is,&rdquo; said Johnny, after a long look at
+the island.</p>
+<p>&ldquo;Sha&mdash;shall we tell them?&rdquo; he asked after a
+moment.</p>
+<p>&ldquo;Who? Grandfather and Dave? Oh&mdash;why
+should we? It can&rsquo;t be anything that affects
+us! Let&rsquo;s keep it for our own little secret. Perhaps
+we&rsquo;ll solve the riddle&mdash;&rdquo;</p>
+<p>&ldquo;All right,&rdquo; Johnny agreed, readily. There&rsquo;s
+a queer girl for you, he was thinking. She&rsquo;d be
+lots of fun, though.</p>
+<p>&ldquo;Is the elderly man your grandfather?&rdquo; he
+asked.</p>
+<p>&ldquo;Yes. Professor Casper&rsquo;s his name. Only wish
+I knew as much as he does. My name&rsquo;s Doris&mdash;Doris
+Casper.&rdquo; She put out her hand. &ldquo;I&mdash;I&rsquo;ll
+be seeing you. Good night. And don&rsquo;t forget&mdash;it&rsquo;s
+our secret&mdash;sign of the green arrow!&rdquo;</p>
+<p>She was gone.</p>
+<div class="pb" id="Page_17">[17]</div>
+<p>&ldquo;Sign of the green arrow,&rdquo; Johnny whispered,
+softly. &ldquo;Perhaps I <i>should</i> report it to the professor.
+And then again&mdash;perhaps I shouldn&rsquo;t.
+It can&rsquo;t have a thing to do with this boat,
+and it&rsquo;s entirely out of my line of duty. The
+girl wants to share a secret. Most girls do, in
+fact. So why not?&rdquo;</p>
+<p>With that, for the present at least, the whole
+affair was dismissed from his mind.</p>
+<p>Half an hour later he found himself sitting
+alone on the after deck, glancing away at those
+dim, mysterious shores, and thinking back over
+the events that had led up to this mildly exciting
+night.</p>
+<p>Two months before, he had found himself
+in New York wanting a job, and not able to
+find one. After three weeks of trying he had
+grown somewhat bitter about the whole thing.</p>
+<p>&ldquo;I&rsquo;m intelligent,&rdquo; he had said to a prospective
+employer. &ldquo;I&rsquo;ve always worked. I like it.
+Why shouldn&rsquo;t I have a chance?&rdquo;</p>
+<p>&ldquo;Why not?&rdquo; the grey haired man had replied
+sadly. &ldquo;I&rsquo;ve asked that question often, but I
+don&rsquo;t know the answer. I only know we can&rsquo;t
+use another man.&rdquo;</p>
+<div class="pb" id="Page_18">[18]</div>
+<p>That very afternoon, while watching boats
+moving out to sea, Johnny had his chance, and
+took it. He caught sight of a young man,
+struggling toward a gang-plank under a heavy
+load.</p>
+<p>&ldquo;Give you a lift?&rdquo; he had volunteered,
+courteously.</p>
+<p>&ldquo;Whew! Yes.&rdquo; The man mopped his brow.
+&ldquo;Looking for a dime?&rdquo;</p>
+<p>&ldquo;Not yet!&rdquo; Reddening, Johnny impulsively
+jerked a few small bills from his pocket. &ldquo;Not
+broke, yet.&rdquo;</p>
+<p>&ldquo;Oh!&rdquo; The man looked at him with interest.
+&ldquo;Say!&rdquo; he exclaimed. &ldquo;I shouldn&rsquo;t wonder if
+you&rsquo;d do!&rdquo;</p>
+<p>&ldquo;For what?&rdquo; the boy asked.</p>
+<p>&ldquo;I&rsquo;m off to the Spanish Main to take pictures&mdash;native
+life, ancient ruins, and all that.
+There&rsquo;s a lot of stuff to lug, and&mdash;&rdquo; he hesitated,
+&ldquo;perhaps a fight to step into now and
+then! Want to go?&rdquo;</p>
+<p>&ldquo;<i>Do</i> I?&rdquo; Johnny grabbed the two largest
+bags.</p>
+<div class="pb" id="Page_19">[19]</div>
+<p>&ldquo;There&rsquo;s no money in it! Just experience and
+expenses.&rdquo;</p>
+<p>&ldquo;All right! What are we waiting for?&rdquo; Johnny
+led the way up the gang-plank.</p>
+<p>All that had been two months before and
+what wonderful months those had been! Sailing
+from island to island, they had taken pictures
+of quaint, native homes, of native women
+with flashing eyes, of ancient buccaneer cannon,
+fast rusting to nothingness. There had
+been three exciting fights, with men who had
+thought they were intruding. In one of these,
+a machete had come within a fraction of an
+inch of Johnny&rsquo;s ear. He seemed to feel the
+cool swish of it now.</p>
+<p>Then, he thought with a sigh, those golden
+days had ended. Lee Martin, the photographer,
+had been called back to New York.</p>
+<p>&ldquo;You keep the stuff,&rdquo; Lee had said to Johnny.
+&ldquo;You may be able to get some unusual
+pictures. If you do&mdash;send &rsquo;em home to me. I&rsquo;ll
+see what I can make out of &rsquo;em, for you.&rdquo;</p>
+<div class="pb" id="Page_20">[20]</div>
+<p>Johnny had watched Lee&rsquo;s boat fade into the
+distance. Then, with heavy heart, he had
+marched back to his lodgings in Port au
+Prince, the capital of the Island Republic of
+Haiti.</p>
+<p>That very day he had noticed the <i>Sea
+Nymph</i>, located the man in charge, and signed
+up as watch. His photographic equipment was
+in his stateroom. He had laid in a good supply
+of film packs and plates. Would he find
+opportunity to use them? Would he get some
+unusual pictures to send to Lee Martin? Time
+was to answer all these questions in its own
+way....</p>
+<p>&ldquo;It&rsquo;s a strange layout,&rdquo; he thought, as he
+took a turn about the deck. &ldquo;I suppose I&rsquo;ll
+know what it&rsquo;s all about before long.&rdquo;</p>
+<div class="pb" id="Page_21">[21]</div>
+<p>It was indeed a strangely equipped craft. A
+three-master, with an auxiliary motor for bad
+weather, the <i>Sea Nymph</i> had been built for
+island trade. Since the bottom had dropped out
+of the sugar market, she had been lying idle
+in the harbor. Without making many changes,
+the elderly professor had equipped her for his
+purpose, whatever that might be. Johnny had
+not yet been told. There had been a hold at
+the boat&rsquo;s center, for sugar and other freight.
+This had been transformed into a tank&mdash;or
+swimming pool. Johnny could not tell which.
+Doris, garbed in a gay swim suit, had taken
+a morning plunge there, but he had a notion
+it was for some other purpose, also.</p>
+<p>Strangest of all, close to the stern where it
+could be reached by the stout hoists, was a
+large, hollow steel ball. It was all of eight feet
+in diameter, and its walls were several inches
+thick. What, he had asked himself more than
+once, could that be for? But he had asked no
+one else. The natives would not know, and one
+simply did not ask such questions of an employer.
+Besides, Johnny had learned long before,
+it is a waste of time to ask questions
+which, in good time, will answer themselves....</p>
+<div class="pb" id="Page_22">[22]</div>
+<h2 id="c2"><span class="small">CHAPTER II</span>
+<br />SPOOKY WATERS</h2>
+<p>Johnny&rsquo;s questions regarding the steel ball
+were answered the following afternoon.
+After his usual six hours of sleep, he was sitting
+on the deck when the young man they
+called Dave&mdash;his whole name was Dave Darnell&mdash;approached
+him.</p>
+<p>&ldquo;I saw you taking pictures yesterday,&rdquo; Dave
+said with a smile.</p>
+<p>&ldquo;Yes,&rdquo; Johnny answered. &ldquo;Just a picture of
+that island. I hope you didn&rsquo;t mind.&rdquo;</p>
+<p>&ldquo;Not at all&rdquo;, said Dave. &ldquo;That looked like
+a rather good camera.&rdquo;</p>
+<p>&ldquo;It is!&rdquo; Johnny exclaimed. &ldquo;None better. Of
+course,&rdquo; he added, grinning, &ldquo;it&rsquo;s not mine. It
+was loaned to me. And there&rsquo;s equipment,
+screens for infra-red pictures, flash bulbs,
+flood-lights&mdash;about everything.&rdquo;</p>
+<div class="pb" id="Page_23">[23]</div>
+<p>&ldquo;Say&mdash;ee&mdash;&rdquo; Dave exclaimed. &ldquo;Looks like
+you&rsquo;re a real find! Want to go down and try
+your luck at taking pictures?&rdquo; He nodded
+toward the big steel ball.</p>
+<p>&ldquo;Down?&rdquo; Johnny asked, a little blankly.</p>
+<p>&ldquo;Yes&mdash;to the place of eternal night!&rdquo;</p>
+<p>&ldquo;E&mdash;eternal night!&rdquo;</p>
+<p>&ldquo;That&rsquo;s right! I can&rsquo;t describe it to you! But
+I can show you. Question is&mdash;can you take
+pictures in complete darkness?&rdquo;</p>
+<p>&ldquo;They don&rsquo;t come too dark for me!&rdquo; Johnny
+flashed back. &ldquo;Lee Martin and I took a
+picture of a Voodoo witches&rsquo; meeting&mdash;people
+hiding in the dark from the island police. You
+couldn&rsquo;t see your hand. But we got the picture
+all right. And I nearly lost an ear!
+A burly black fellow swung at me with a
+machete!&rdquo;</p>
+<p>&ldquo;Nothing like that down there,&rdquo; Dave chuckled.
+&ldquo;All the same&mdash;you&rsquo;ll be surprised! Do you
+want to go?&rdquo;</p>
+<p>&ldquo;Sure&mdash;I&rsquo;ll go,&rdquo; Johnny agreed. &ldquo;Only,&rdquo; he
+hesitated, &ldquo;I have a strange horror of being
+completely out of touch with the rest of the
+world! What do we do about that?&rdquo;</p>
+<div class="pb" id="Page_24">[24]</div>
+<p>&ldquo;That&rsquo;s easy!&rdquo; Dave laughed. &ldquo;We have a
+short-wave set on the boat and another in the
+steel ball. Doris or the professor is always listening
+in. How about it&mdash;do we go?&rdquo;</p>
+<p>&ldquo;We sure do!&rdquo; Johnny grinned.</p>
+<p>&ldquo;O.K.! Get your stuff together. We&rsquo;ll go
+down in an hour!&rdquo;</p>
+<p>&ldquo;Wonder what I&rsquo;m getting into now?&rdquo;
+Johnny asked himself as he walked to his
+stateroom.</p>
+<p>An hour later he found himself passing
+through one of the strangest experiences of his
+life. He was seated, doubled up. Had he wanted
+to stand, he could not have done so. His
+eyes were wide open, but he saw never a thing!</p>
+<p>&ldquo;Inky black!&rdquo; he whispered.</p>
+<p>&ldquo;Nowhere else will you see such darkness,&rdquo;
+came Dave&rsquo;s voice, close at his side.</p>
+<p>&ldquo;But look! There&rsquo;s something!&rdquo; Johnny exclaimed
+in a low tone.</p>
+<p>&ldquo;Yes!&rdquo; Dave&rsquo;s voice rose excitedly. &ldquo;And it&rsquo;s
+something quite new!&rdquo;</p>
+<div class="pb" id="Page_25">[25]</div>
+<p>Johnny stared with all possible intensity. Before
+him&mdash;how far away he could not tell&mdash;there
+moved a series of small, round spots of
+yellow light. &ldquo;It&rsquo;s like flying through the air
+at night,&rdquo; he murmured; &ldquo;and seeing the lights
+of a huge Zeppelin passing.&rdquo;</p>
+<p>&ldquo;Quick! Get your camera ready!&rdquo; said Dave.</p>
+<p>&ldquo;All right&mdash;it&rsquo;s all set!&rdquo; Johnny&rsquo;s own voice
+sounded strange to him.</p>
+<p>&ldquo;I&rsquo;ll turn on the light,&rdquo; said Dave. &ldquo;Now!&rdquo;</p>
+<p>&ldquo;One, two, three&mdash;&rdquo; Johnny counted to ten,
+and closed the camera shutter with a click.</p>
+<p>&ldquo;Now! One more picture,&rdquo; urged Dave. Another
+click. &ldquo;They&rsquo;re passing. They&rsquo;ll soon be
+gone. If only it works!&rdquo; Dave&rsquo;s voice grew
+louder with excitement.</p>
+<p>&ldquo;There&rdquo;, Johnny sighed. &ldquo;That&rsquo;s two pictures&mdash;I
+hope!&rdquo;</p>
+<p>&ldquo;No time for another,&rdquo; said Dave.</p>
+<p>Johnny stared once more at the blue-black
+darkness before him, and marveled afresh.
+Could anything be stranger than this? Queerest
+of all&mdash;there had not been one ray of visible
+light. And Dave&rsquo;s voice at his side had said,
+&ldquo;I&rsquo;ll turn on the light!&rdquo;</p>
+<div class="pb" id="Page_26">[26]</div>
+<p>But Johnny knew what it was all about. He
+had taken pictures in the dark before. Still the
+strangeness of it all, baffled him.</p>
+<p>As if brought on by the darkness and mystery,
+he suddenly thought of something he
+must tell Dave.</p>
+<p>&ldquo;Samatan is stirring up trouble with the crew
+of the <i>Sea Nymph</i>!&rdquo; he said.</p>
+<p>&ldquo;Our cook? Samatan?&rdquo; Dave&rsquo;s voice registered
+surprise. &ldquo;You must be mistaken.&rdquo;</p>
+<p>&ldquo;No&rdquo; said Johnny. &ldquo;I heard him last night&rdquo;.</p>
+<p>&ldquo;But why should he? He is well paid.&rdquo;</p>
+<p>&ldquo;That&rsquo;s what I don&rsquo;t know.&rdquo; There was a
+note of perplexity in Johnny&rsquo;s voice. &ldquo;It&rsquo;s what
+somebody must find out. What if he should
+persuade the men to hoist anchor and sail, <i>right
+now</i>?&rdquo;</p>
+<p>&ldquo;Right now?&rdquo;</p>
+<p>&ldquo;Yes.&rdquo;</p>
+<p>&ldquo;That would be practically fatal! It&mdash;</p>
+<p>&ldquo;But look!&rdquo; Dave&rsquo;s voice changed. &ldquo;There
+they are again! I never saw such a sight! Get
+ready for another picture!&rdquo;</p>
+<div class="pb" id="Page_27">[27]</div>
+<p>Johnny quickly took another picture&mdash;two&mdash;three
+more pictures. After that, the spots of
+yellow light disappeared as before, and&mdash;for
+what seemed a very long time&mdash;there was
+nothing but inky blackness.</p>
+<p>Johnny settled back for a few, fleeting
+thoughts. That he was due for some unusual
+experiences he had never a doubt. Fancy, going
+far beneath the surface of the sea in a
+thing like this steel ball! Suppose something
+went wrong&mdash;even the least little thing!
+What then? Dave had told him it was possible
+to go down half a mile, perhaps more. Would
+they ask him to go down that far to take pictures?</p>
+<p>Sometimes, he thought, it&rsquo;s better not to
+know too much about what is ahead.</p>
+<p>He had been vastly interested in their manner
+of taking off in that steel ball. They had
+crawled through a small entrance in the side,
+and taken their places. Then had come the
+bang of a steel door, swung into place. This
+was followed by the clang of wrenches, bolting
+them inside!</p>
+<div class="pb" id="Page_28">[28]</div>
+<p>Dave had seen him move, restlessly. &ldquo;Don&rsquo;t
+let that bother you,&rdquo; he had laughed. &ldquo;I&rsquo;ve
+been down scores of times. It&mdash;it&rsquo;s just grand!
+Professor Casper got the thing up,&rdquo; Dave
+had explained. &ldquo;Now his doctor won&rsquo;t let him
+go down&mdash;on account of a bad heart. So it&rsquo;s
+up to me, on this trip. There are things we
+want to know. Your pictures should help.&rdquo;</p>
+<p>There hadn&rsquo;t been time for any more talk.
+After the door had been securely bolted down,
+the hoist had lifted them over the rail and
+lowered them gently into the inky depths.</p>
+<p>With a suddenness that was startling, Johnny
+awoke from his revery. Like the flash of
+electric bulbs, lights were appearing and disappearing
+before his eyes.</p>
+<p>&ldquo;Wha&mdash;what is it?&rdquo; he exclaimed.</p>
+<p>&ldquo;Shrimp,&rdquo; was Dave&rsquo;s matter-of-fact reply.
+&ldquo;Something is after them. The squid shoots
+out ink to make himself invisible, but in this
+darkness that would do no good. These shrimp
+shoot out little balls of fire. Look!&rdquo; Suddenly
+Dave switched on a powerful electric light, and
+the little world about them was transformed.</p>
+<div class="pb" id="Page_29">[29]</div>
+<p>Seeming to swim in air, a score of tiny, crab-like
+creatures moved rapidly across the spot
+of light. Viewed through the six-inch-thick window
+of fused quartz, they seemed fantastic
+indeed.</p>
+<p>For a few seconds the space before them was
+a dark and empty void. Then again, it filled
+with darting creatures. Dave switched off the
+light, and once again the shrimp disappeared.
+As soon as the more powerful light from their
+strange, sub-sea visitor had been turned on,
+they had appeared as dark, darting creatures.</p>
+<p>&ldquo;What was following them?&rdquo; Johnny asked.</p>
+<p>&ldquo;Who knows?&rdquo; There was a suggestion of
+deep mystery in his companion&rsquo;s tone. &ldquo;That&rsquo;s
+the thrill and charm that comes from exploring
+the sea&rsquo;s depths! Anything may put in an
+appearance. Creatures such as the world never
+has dreamed of, may pass before our eyes!&rdquo;</p>
+<p>&ldquo;How strange! How sort of&mdash;&rdquo;</p>
+<p>Johnny broke off to stare, then to exclaim&mdash;&ldquo;There&mdash;there&rsquo;s
+something <i>huge</i>!&rdquo;</p>
+<p>&ldquo;Quick! The camera!&rdquo; Dave&rsquo;s voice trembled.
+&ldquo;No&mdash;it&rsquo;s too late!&rdquo;</p>
+<div class="pb" id="Page_30">[30]</div>
+<p>Moving with surprising swiftness, some
+great, dark bulk passed through the outer edge
+of their narrow beam of light.</p>
+<p>&ldquo;Wha&mdash;what was it?&rdquo; Johnny felt a little
+giddy.</p>
+<p>&ldquo;Some huge creature of the deep. Perhaps a
+whale or a black fish,&rdquo; Dave replied quietly.
+&ldquo;It is known that they penetrate to these
+depths. Then again&mdash;perhaps it was some huge,
+scaly creature that inhabits these depths
+alone.&rdquo;</p>
+<p>&ldquo;What if it had collided with us, or tangled
+in our cable?&rdquo;</p>
+<p>&ldquo;Then,&rdquo; Dave&rsquo;s tone was dry and droll, &ldquo;we
+might have taken a long, swift ride through
+space!&rdquo;</p>
+<p>&ldquo;Swinging like a pendulum?&rdquo;</p>
+<p>&ldquo;That&rsquo;s it! On our thousands of feet of
+cable.&rdquo;</p>
+<p>&ldquo;I shouldn&rsquo;t like that,&rdquo; Johnny shuddered.</p>
+<p>&ldquo;Then why bring it up?&rdquo; Dave chuckled.</p>
+<p>&ldquo;Why, indeed!&rdquo; Johnny laughed&mdash;</p>
+<p>After another half hour of waiting, for one
+more fascinating spectacle, Dave decided to
+signal for their return to the top. Johnny experienced
+a real sense of relief.</p>
+<div class="pb" id="Page_31">[31]</div>
+<p>&ldquo;To explore the depths of the sea&mdash;earth&rsquo;s
+last great frontier&mdash;this is our purpose,&rdquo; Dave
+said, as they began to rise. &ldquo;For centuries men
+have been discovering strange creatures washed
+up on beaches. They could have come from
+nowhere save the ocean depths. For many
+years they have been dragging these depths
+with nets, to discover, if they could, what lived
+in these &lsquo;spooky waters&rsquo; of dense darkness.&rdquo;</p>
+<p>And now, Johnny thought exultantly, I am
+having a part in an expedition that may reveal
+the secrets of these dark depths.</p>
+<p>But once again his mind returned to Samatan.
+This strange person, with his apparent
+hold on the native crew, was cook for the expedition.
+And a marvelous cook he was. Johnny
+had been interested in the strange old
+man, from the first. He had studied him carefully.
+And there could be no mistake about it&mdash;Samatan
+was endeavoring to stir the crew to
+something....</p>
+<div class="pb" id="Page_32">[32]</div>
+<p>Now the blue-black world about him appeared
+to be changing color. The blackness was
+less intense.</p>
+<p>&ldquo;It&rsquo;s like the coming of dawn,&rdquo; he said to
+Dave.</p>
+<p>&ldquo;Yes,&rdquo; Dave chuckled, &ldquo;only here we may
+make our own dawn, slow or fast, as we
+choose!&rdquo;</p>
+<p>That this was to be rather a fast dawn,
+Johnny was not long in discovering. But it was
+fascinating. To pass from inky blackness to
+dark, deep blue, on into colors that resembled
+a sunrise, and then to the eternal blue of a
+bright, tropical day, was an experience not soon
+to be forgotten. From time to time as they
+rose, strange denizens of the sea seemed to
+peer at them. Once a shark shot past, and just
+before they reached the top, a great turtle
+swam awkwardly away.</p>
+<p>Came the bump&mdash;bump of their steel ball as,
+lifted by the great crane, it landed on the
+deck. Then, almost before he knew it, Johnny
+thrust his head into bracing fresh air, to be
+greeted by a smiling face and to hear a girl&rsquo;s
+voice saying:</p>
+<div class="pb" id="Page_33">[33]</div>
+<p>&ldquo;Hello, Johnny Thompson! How do you like
+being down in Davey Jones&rsquo; locker?&rdquo;</p>
+<p>After assuring her of his enthusiasm,
+Johnny hurried to his stateroom. He was wondering
+whether Doris remembered their &ldquo;secret&rdquo;
+of the night before.</p>
+<div class="pb" id="Page_34">[34]</div>
+<h2 id="c3"><span class="small">CHAPTER III</span>
+<br />A BRIGHT EYED BEACH-COMBER</h2>
+<p>Johnny went at once to a darkroom that had
+been quickly prepared in the hold. Pictures
+could be taken on land in what appeared to
+be complete darkness; he knew this from his
+work with Lee Martin. But would the utter
+blackness beneath the sea be the same? He
+would know, soon.</p>
+<p>He watched the films with absorbed interest.
+As the developer took hold, he saw nothing
+but blackness.</p>
+<p>&ldquo;Nothing there!&rdquo; he muttered disappointedly.
+&ldquo;Wasted shots. We&mdash;&rdquo;</p>
+<p>But wait! Was something coming out? Yes!
+There it was! An indistinct, shadowy form!</p>
+<div class="pb" id="Page_35">[35]</div>
+<p>His thoughts leaped ahead. His pictures were
+to be a success. He would be asked, times
+without number, to go down in that darkness
+and take more pictures. Dangerous work, but
+he had to be a good sport, and besides, it was
+splendid experience for him.</p>
+<p>The strange, undersea creatures, some very
+large, with heads as long as their bodies, with
+fantastic buck teeth and hideous eyes, some
+small and snakelike and some as normal looking
+as any fish to be found near the surface,
+came out clearly visible on the film.</p>
+<p>&ldquo;Perfect!&rdquo; was the professor&rsquo;s enthusiastic
+reaction when Johnny showed him damp prints
+a few hours later. &ldquo;A real contribution! And
+you took them in complete darkness!&rdquo;</p>
+<p>&ldquo;In what appeared to be complete darkness,&rdquo;
+Johnny corrected. &ldquo;I did it with an infra-red
+light screen. That screen shuts out all
+but the infra-red rays. Eyes can&rsquo;t see the
+light of these rays.</p>
+<p>&ldquo;Of course,&rdquo; he went on, &ldquo;we might have
+used a flood light, but that would have frightened
+those creatures away. As it is, we got
+them in what you might call a natural pose.
+Candid camera shots from the deep sea,&rdquo; he
+laughed.</p>
+<div class="pb" id="Page_36">[36]</div>
+<p>&ldquo;Yes, yes,&rdquo; the professor agreed. &ldquo;Very remarkable
+and most useful!&rdquo;</p>
+<p>&ldquo;Of course,&rdquo; said Johnny, with a touch of
+modesty. &ldquo;I learned all this from Lee Martin.
+He took me on as a helper and sort of body-guard.
+I just absorbed this camera stuff as
+we went along.&rdquo;</p>
+<p>&ldquo;I see,&rdquo; said the professor, &ldquo;that you have
+learned one of the real secrets of success.&rdquo;</p>
+<p>&ldquo;What&rsquo;s that?&rdquo; Johnny asked.</p>
+<p>&ldquo;To learn all you can about everything that
+comes your way, and to file that knowledge
+away in your brain. One never can tell when
+the opportunity to use such information may
+come to him. Perhaps never, but it&rsquo;s always
+there!</p>
+<p>&ldquo;You should be a great aid to us,&rdquo; the professor
+added thoughtfully. &ldquo;You see,&rdquo; he said,
+leaning forward in his chair, &ldquo;I regard this
+work as the most interesting and exciting of
+my entire career. Young man,&rdquo;&mdash;his eyes fairly
+shone, &ldquo;what place do you think of as our
+last frontier?&rdquo;</p>
+<div class="pb" id="Page_37">[37]</div>
+<p>Then, before Johnny could reply&mdash;&ldquo;You may
+go east, west, north, south&rdquo; the professor continued
+&ldquo;but you find no frontier. You must
+go up or down! Up into the stratosphere&mdash;or
+down, into the sea. These are our last frontiers.
+Dave and I have chosen the deep sea,
+because there we may yet discover forms of
+life not known to man. These pictures,&rdquo; he
+held them up, &ldquo;show two types of fish never
+before seen&mdash;and we have but begun!&rdquo;</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>&ldquo;We have but begun,&rdquo; Johnny repeated softly
+to himself as, some hours later, he once more
+paced the deck in his solitary vigil. &ldquo;We have
+begun. Where shall we end? We&mdash;&rdquo;</p>
+<p>His soliloquy was interrupted. Had he caught
+a gleam out there on the water? He thought
+so. Now it was gone.</p>
+<p>That was one thing he was to watch for&mdash;natives
+in dugouts and canoes. Who could tell
+what they might do? In a strange land one
+did well to keep close watch. He would keep
+an eye out for that light....</p>
+<div class="pb" id="Page_38">[38]</div>
+<p>&ldquo;Exploring our last frontier,&rdquo; he whispered
+softly. He was in for something truly big
+again. Big, exciting, and dangerous! Well, that
+was the life. Life, action, thrills&mdash;and a touch
+of romance! Boy-oh-boy! That was the stuff!</p>
+<p>But there <i>was</i> a gleam of light on the water!
+There could be no mistaking it. It was closer,
+too. What should he do? Call someone? After
+a moment&rsquo;s thought he decided to wait. His
+flashlight would reach out a hundred feet or
+more. Time enough when those people, whoever
+they were, came within reach of his light. So,
+somewhat excited, Johnny waited by the gunwale,
+watching the bobbing of a tiny light&mdash;now
+here&mdash;now there&mdash;now gone&mdash;but ever coming
+nearer.</p>
+<p>He waited, breathless, tense, expectant,
+watching for some craft. What would he see?
+Dark faces? Gleaming spears? Flashing
+machetes? Soon he would know.</p>
+<p>When at last he cast the gleam of his powerful
+light on the spot where that golden glow
+had last shown, he gasped in astonishment.</p>
+<p>&ldquo;A girl!&rdquo; he exclaimed, amazedly.</p>
+<div class="pb" id="Page_39">[39]</div>
+<p>Yes, it was a girl. In a dugout patterned
+after a white man&rsquo;s canoe, she came straight
+on, without a sound. Her boy&rsquo;s shirt and blue
+slacks were faded, but clean. Her reddish-golden
+hair fairly gleamed in the light. She
+had a round, freckled face and smiling eyes.</p>
+<p>As she came alongside, Johnny reached over,
+took her line and made it fast. Then he
+gripped her small, firm hand and helped her
+over the low rail.</p>
+<p>&ldquo;I&mdash;I had to come,&rdquo; she breathed. &ldquo;I&mdash;I&rsquo;ve
+been watching you for days. What&mdash;&rdquo; there
+was tense eagerness in her voice, &ldquo;what is that
+big ball you let down into the sea?&rdquo;</p>
+<p>&ldquo;That,&rdquo; said Johnny, after bringing her a deck
+chair, &ldquo;is for going down, down, down, to the
+bottom of the sea!&rdquo;</p>
+<p>&ldquo;I&mdash;I hoped it would be.&rdquo;</p>
+<p>&ldquo;Why&rdquo;</p>
+<p>&ldquo;Our trading schooner, the <i>Swallow</i>, sank.
+We&mdash;we can&rsquo;t find it. I thought&mdash;&rdquo;</p>
+<p>&ldquo;Thought these people might find it for
+you?&rdquo;</p>
+<p>&ldquo;Yes! Yes&mdash;that&rsquo;s it! Do you suppose&mdash;&rdquo;</p>
+<p>&ldquo;I can&rsquo;t tell about that. You see,&rdquo; Johnny
+hesitated, &ldquo;I&rsquo;m only a watch, on this boat. I&mdash;well
+you might say I&rsquo;m just a tropical tramp!&rdquo;</p>
+<div class="pb" id="Page_40">[40]</div>
+<p>&ldquo;That,&rdquo; said the girl, putting out her hand,
+&ldquo;makes us kin! Grandfather and I are beach-combers!</p>
+<p>&ldquo;You see,&rdquo; she went on, after giving Johnny&rsquo;s
+hand a quick grip, &ldquo;I sort of ran away
+from home. No, not quite that. I was half
+through college. It cost an awful lot. My folks
+couldn&rsquo;t afford it, but they wanted me to finish
+anyway. I wouldn&rsquo;t let them spend the
+money, so I asked grandfather to send me a
+steamship ticket. He did&mdash;and here I am! It&rsquo;s
+grand! Really gorgeous! These nights.&rdquo; She
+spread her arms wide. &ldquo;The jungle! The water
+rushing along the shore, the birds, the flowers,
+romance, adventure, everything! It&rsquo;s just
+grand!&rdquo; Her face fairly shone.</p>
+<p>&ldquo;But our boat,&rdquo; her voice dropped, &ldquo;sprang
+a leak in a storm. The natives were sailing
+her. They lost the location and we can&rsquo;t find
+it. Perhaps&mdash;&rdquo;</p>
+<p>&ldquo;You&rsquo;d have to see Dave,&rdquo; said Johnny.</p>
+<div class="pb" id="Page_41">[41]</div>
+<p>&ldquo;He&rsquo;s the young man who goes down in the
+steel ball? I&mdash;I&rsquo;ve been watching you through
+the glass.&rdquo;</p>
+<p>&ldquo;Yes, that&rsquo;s Dave. He takes his work of exploring
+the sea&rsquo;s depths very serenely! Tell you
+what!&rdquo; Johnny exclaimed. &ldquo;You get him to
+take you down!&rdquo;</p>
+<p>&ldquo;In&mdash;in that thing?&rdquo; The girl drew in her
+breath sharply, eyeing the distant shadow of
+the huge sphere.</p>
+<p>&ldquo;Sure, in the steel ball! He&rsquo;d like to! He&rsquo;s
+proud of it. And he likes showing people
+strange things. If you want someone to do a
+certain thing for you&mdash;ask him to do something
+else, first! That&rsquo;s a grand rule.&rdquo; Johnny looked
+into the girl&rsquo;s frank, grey eyes, and decided
+he liked her.</p>
+<p>&ldquo;Yes&mdash;I&mdash;I suppose so,&rdquo; the girl replied, slowly.
+&ldquo;But you know&mdash;well, anyway&mdash;it&rsquo;s worth
+thinking about!&rdquo;</p>
+<p>&ldquo;Look!&rdquo; said Johnny, starting up. &ldquo;Perhaps
+you can tell me what <i>that</i> is.&rdquo; He pointed to
+the distant island, where again the blinking
+green arrow could be seen.</p>
+<div class="pb" id="Page_42">[42]</div>
+<p>&ldquo;No, I&mdash;&rdquo; The girl sat there, staring. &ldquo;I
+never saw that before. But you know,&rdquo; her
+voice dropped to a whisper, &ldquo;there are spies
+on these islands! Lots of spies!&rdquo;</p>
+<p>&ldquo;Spies?&rdquo; Johnny&rsquo;s voice expressed astonishment.</p>
+<p>&ldquo;European spies,&rdquo; she added.</p>
+<p>&ldquo;But why?&rdquo;</p>
+<p>&ldquo;I don&rsquo;t know about it. Grandfather can
+tell you all there is to know. He&rsquo;s always talking
+spies, and saying what they&rsquo;ll do when the
+time comes.... You must come over and see
+us. Our place is just over there on the shore.
+You&rsquo;ll come, won&rsquo;t you?&rdquo;</p>
+<p>&ldquo;Yes. Certainly I&rsquo;ll come.&rdquo;</p>
+<p>&ldquo;Thanks a lot.&rdquo; Once more she gripped his
+hand. &ldquo;And now&mdash;goodnight. I&mdash;I&rsquo;m glad I
+came.&rdquo; She was over the side and away.</p>
+<p>&ldquo;Well, I&rsquo;ll <i>be</i>!&rdquo; said Johnny as he settled back
+in his chair. A moment later, faint, and far
+away, he heard her voice come over the dark
+water:</p>
+<p>&ldquo;My name is Mildred Kennedy. Be sure to
+come see us&mdash;don&rsquo;t forget!&rdquo;</p>
+<div class="pb" id="Page_43">[43]</div>
+<p>For answer Johnny whistled once, cupping
+his lips with his hands, to reduce the likelihood
+of arousing anyone on board. After that he
+was left to silence and the night&mdash;and the mysterious
+arrow of green light, blinking away on
+the distant hillside.</p>
+<p>Sliding out the field glass, he studied that
+arrow for two full minutes. He felt sure from
+its strange blinking and winking that it was
+being used as a code signal. For the life of
+him, however, he could not make the lights
+separate themselves. They always remained a
+blur.</p>
+<p>&ldquo;Too far away,&rdquo; he grumbled. He wanted
+to hoist anchor and let the boat drift closer
+to shore, but this, he knew, would not do. He
+was neither skipper nor mate.</p>
+<p>Suddenly recalling Doris&rsquo; words of the previous
+night, he realized that he had made the
+light, the secret of the bright-eyed little
+Mildred Kennedy! &ldquo;I won&rsquo;t tell Doris about
+that!&rdquo; he decided. &ldquo;At least, not yet.&rdquo;</p>
+<p>He was seized with a sudden desire to know
+who was receiving those blinking signals of the
+green arrow. Deep in thought, he turned his
+back to the island and, to his utter astonishment,
+saw above the motionless sea some distance
+away, a second blinking green arrow!</p>
+<div class="pb" id="Page_44">[44]</div>
+<p>&ldquo;Ah!&rdquo; he breathed, lifting the glass to his
+eyes. Digging into a pocket, he dragged out
+a pencil and a small notebook. After that, for
+fully ten minutes, he held the glass with his
+left hand while setting down numbers. 5 - 7 - 11 - 9,
+13 - 6 - 3, 4 - 9 - 2 - 7. He wrote down
+figures and more figures, until a strange, rushing
+sound reached his ears.</p>
+<p>Startled, he sprang to his feet. On the shore
+side he saw a broad band of white foam rapidly
+approaching the boat. Standing there,
+mouth open and staring, he watched it sweep
+toward him. With a hissing roar it swept beneath
+the boat and, without causing the least
+movement of the craft, went rushing on.</p>
+<p>&ldquo;False alarm,&rdquo; he murmured. &ldquo;Probably
+what they call a rip-tide.&rdquo;</p>
+<p>Turning back to sea, he looked again for
+the blinking green arrow. But it was gone. The
+distant island hill, too, now was entirely dark.</p>
+<p>&ldquo;Strange,&rdquo; he muttered, as again he paced
+the deck.</p>
+<div class="pb" id="Page_45">[45]</div>
+<p>And indeed it was strange, for the ship&rsquo;s log
+had recorded no boat in sight at sundown!</p>
+<p>From then, until Johnny&rsquo;s vigil ended with
+the dawn, there was nothing to disturb the
+calm stillness of the tropic night.</p>
+<div class="pb" id="Page_46">[46]</div>
+<h2 id="c4"><span class="small">CHAPTER IV</span>
+<br />SPIES</h2>
+<p>On board the <i>Sea Nymph</i> was a small
+boat known as the Tub. Very short and
+broad, it rowed like a washtub, and in
+a storm, would have been about as safe as a
+laundry basket. But water held no terrors for
+Johnny, so, late the following afternoon, he
+pushed the Tub into the sea and headed for
+shore.</p>
+<p>&ldquo;You came! How grand!&rdquo; Mildred Kennedy
+came racing down a palm-lined path to greet
+him.</p>
+<p>She wore an orange-colored smock, and there
+was flour on the hand she held out in greeting.</p>
+<p>&ldquo;I&rsquo;m making cookies,&rdquo; she confided.</p>
+<p>&ldquo;Sounds great!&rdquo; Johnny grinned.</p>
+<div class="pb" id="Page_47">[47]</div>
+<p>She led him to a broad, screened porch where
+a bearded giant unwound himself from a deep,
+comfortable chair to meet him.</p>
+<p>&ldquo;This is grandfather.&rdquo; Real pride shone in
+the girl&rsquo;s eyes. &ldquo;He&rsquo;s been a beach-comber for
+thirty years. That&rsquo;s a record!&rdquo;</p>
+<p>&ldquo;Now, child,&rdquo; the old man drawled, &ldquo;don&rsquo;t
+you go bragging on me.</p>
+<p>&ldquo;Have a chair,&rdquo; he directed Johnny.</p>
+<p>&ldquo;My cookies will burn. I&rsquo;ll have to hurry,&rdquo;
+said the girl. &ldquo;Grandfather&mdash;you tell him about
+those spies.&rdquo;</p>
+<p>&ldquo;Spies? Oh, yes. Those European fellows.&rdquo;
+The old man&rsquo;s face darkened. &ldquo;I&rsquo;ve been
+preaching against &rsquo;em for mighty nigh twenty
+years. Mebbe longer than that, I reckon. You
+see, Mr. Thompson&mdash;&rdquo;</p>
+<p>&ldquo;Please call me Johnny,&rdquo; said the boy. &ldquo;I&rsquo;m
+not used to the &lsquo;Mister&rsquo;.&rdquo;</p>
+<p>&ldquo;All right, Johnny. That&rsquo;s what it shall be.
+You see, Johnny, these islands were once a
+French colony. The French made slaves of the
+natives. They brought in a lot more slaves and
+before long, there were many more slaves than
+there were Frenchmen. So the natives polished
+up their machetes, started poundin&rsquo; their Voodoo
+drums, and drove the Frenchmen off the
+islands. This has been a republic ever since.</p>
+<div class="pb" id="Page_48">[48]</div>
+<p>&ldquo;But spies, now,&rdquo; his voice dropped. &ldquo;How&rsquo;d
+you get to thinkin&rsquo; o&rsquo; spies?&rdquo;</p>
+<p>&ldquo;Your granddaughter told me there were
+spies. And there&rsquo;s been a green arrow&mdash;an
+arrow of light&mdash;on the hill at night, and another
+on the water. It&rsquo;s sort of mysterious.&rdquo;</p>
+<p>&ldquo;A green arrow of light,&rdquo; the old man repeated.
+&ldquo;That&rsquo;s what Mildred was telling me.
+Strange that I never saw it.&rdquo;</p>
+<p>&ldquo;You couldn&rsquo;t,&rdquo; said Johnny, &ldquo;unless you
+were on the water. It&rsquo;s near the middle of the
+island, and up high.&rdquo;</p>
+<p>&ldquo;There&rsquo;s a place up there built of stone, half
+castle&mdash;half prison,&rdquo; Kennedy said, thoughtfully.
+&ldquo;Some Frenchman built it, thinking he
+could hold out against the natives. Well, he
+couldn&rsquo;t, and now the natives think it&rsquo;s haunted.
+Won&rsquo;t go near it. It&rsquo;s a long way up a
+terrible trail.</p>
+<p>&ldquo;But those spies, now,&rdquo; he added thoughtfully.
+&ldquo;They may be using it for a hideout and
+signal tower. They stop at nothing.&rdquo;</p>
+<div class="pb" id="Page_49">[49]</div>
+<p>The old man rose, circled the porch like a
+prowling tiger, then returned to his seat.</p>
+<p>&ldquo;These natives,&rdquo; he went on, &ldquo;are a simple
+people. They can&rsquo;t run a country. They found
+it out soon enough. So did these other people,
+these Europeans. I won&rsquo;t name the country as
+you&rsquo;ll learn it soon enough. Those Europeans
+came here and began boring in, just as they do
+everywhere. You&rsquo;ll find them in every South
+American republic and every island of the sea.
+They&rsquo;re robbers, spies, traitors!&rdquo; His voice
+rose. &ldquo;They rob the people, and at the same
+time plot the overthrow of all governments but
+their own.</p>
+<p>&ldquo;Young man!&rdquo; Mr. Kennedy left his chair
+with surprising vigor. &ldquo;Did you ever take a
+good look at the map, and think how important
+this Caribbean Sea is?&rdquo;</p>
+<p>&ldquo;No, I&mdash;&rdquo;</p>
+<p>&ldquo;Come here. Have a look!&rdquo;</p>
+<div class="pb" id="Page_50">[50]</div>
+<p>They stood before a large wall map. &ldquo;Look
+at it,&rdquo; Kennedy insisted. &ldquo;Plentiful islands
+with Central America on the west. A score of
+wonderful harbors. Suppose those people took
+possession of these islands. Look at Haiti! A
+harbor where an entire navy might drop
+anchor! Yes&mdash;and room left for ten thousand
+seaplanes! Bombers! How would our Atlantic
+coast&mdash;Miami, Charleston, New York, Boston&mdash;how
+would they look, after those planes had
+been raiding from this base for a week, if there
+were war. And who says there <i>won&rsquo;t</i> be!</p>
+<p>&ldquo;You saw a light on the water!&rdquo; He whirled
+around.</p>
+<p>&ldquo;Yes! Low down! A green arrow of lights,
+that flashed.&rdquo;</p>
+<p>&ldquo;&lsquo;Low down&rsquo;!&mdash;I should say they were!&rdquo; The
+old man grimaced. &ldquo;Spies!&rdquo; he muttered.
+&ldquo;Since our Marines left the islands&mdash;we took
+control during the World War, you know&mdash;these
+islands have been nests of spies! Something
+should be done about it. But these natives
+sleep on&mdash;and Uncle Sam doesn&rsquo;t care to
+interfere. And yet I&rsquo;m beginning to hope he
+will&mdash;before it is too late!&rdquo; His words trailed
+off as he resumed his seat.</p>
+<div class="pb" id="Page_51">[51]</div>
+<p>&ldquo;These people may call themselves beach-combers,&rdquo;
+Johnny thought to himself. &ldquo;Perhaps
+they are, in a way! But they&rsquo;re grand folks.&rdquo;</p>
+<p>The house, which he presumed had been built
+with native labor, was made of massive, hardwood
+logs. There was no glass in the broad
+windows, but bamboo &ldquo;screens,&rdquo; which could
+be let down at night. Mosquito-net canopies
+were hung over the beds to keep out insects.
+Most tropical houses are like that.</p>
+<p>Behind the house were orchards&mdash;grapefruit,
+oranges, bananas. And down in the flat land
+by the shore, sugar cane was growing.</p>
+<p>&ldquo;We cut it out of the wilderness, the natives
+and I,&rdquo; the old man rumbled, in response to
+Johnny&rsquo;s polite inquiry. &ldquo;They&rsquo;re quite wonderful,
+these natives&mdash;once you come to understand
+them.</p>
+<p>&ldquo;Of course,&rdquo; his brow darkened, &ldquo;some of
+them can&rsquo;t be trusted. Those men, those Europeans&mdash;&rdquo;
+his tone was bitter, &ldquo;have corrupted
+them. Yes, and robbed them, too! They pay
+little for their produce, wild rubber, chicle, wild
+coffee. And they charge the natives high prices
+for cheap goods. They get the people deeply
+in debt to them, and then make slaves of them.</p>
+<div class="pb" id="Page_52">[52]</div>
+<p>&ldquo;That,&rdquo; he sighed, &ldquo;was why we bought a
+trading schooner, Mildred and I. We wanted
+to give the people of our small island a chance.
+We were doing it, too!&rdquo; He struck the table a
+blow with his massive fist. &ldquo;By George! We
+were doing it!</p>
+<p>&ldquo;But our boat&rsquo;s on the bottom now!&rdquo; His
+voice fell. &ldquo;Our natives took her out in a
+storm, and she sprang a leak.&rdquo;</p>
+<p>&ldquo;Yes, I know. Mildred told me.&rdquo; Johnny was
+wondering whether some treacherous native,
+inspired by the Europeans, had let the water
+into the Kennedy boat. At the same time he
+was making a resolve to do all he could to
+find the boat and help bring it to the surface.</p>
+<p>Mildred entered with a great plate of cookies
+and a pitcher of ice-cold, fruit juice.</p>
+<p>&ldquo;I hope you like them,&rdquo; she smiled.</p>
+<p>Johnny did like them. What was more, as
+the moments passed he became more and more
+interested in his new-found friends. They were,
+he told himself, good, kind, intelligent people&mdash;his
+kind. They would do things, together. He
+saw himself with the girl, following obscure
+trails in search of that spy castle whence, perhaps,
+the green arrow messages came.</p>
+<div class="pb" id="Page_53">[53]</div>
+<p>&ldquo;Well,&rdquo; he sighed at last, &ldquo;I&rsquo;ll have to be
+getting back. It&rsquo;s been grand, this visit. I hope
+you&rsquo;ll let me come back, and that&mdash;that we
+can do things together.&rdquo; He was looking at
+the girl.</p>
+<p>&ldquo;Do things? What, for instance?&rdquo; Her face
+was serious.</p>
+<p>&ldquo;Lots of things. Things that may help.&rdquo; He
+gave her a broad smile. Then&mdash;&ldquo;just a big
+batch of day-dreams, I guess.&rdquo;</p>
+<p>At that he shook hands with the old man,
+walked down the broad path with the girl,
+gripped her hand for an instant, then climbed
+into his Tub and rowed away.</p>
+<p>&ldquo;Thanks for one grand time,&rdquo; he called back.</p>
+<p>&ldquo;You&rsquo;re welcome, and thanks for coming,&rdquo;
+was Mildred&rsquo;s answer. And the hills echoed
+back, &ldquo;thanks&mdash;thanks.&rdquo;</p>
+<div class="pb" id="Page_54">[54]</div>
+<h2 id="c5"><span class="small">CHAPTER V</span>
+<br />WHISPERING DEPTHS</h2>
+<p>Johnny had an active mind. Figuring and
+planning were almost continuous activities
+with him. Sometimes he really tried to slow
+the process up, but his mind would keep right
+on, figuring and planning.</p>
+<p>As he rowed slowly back to the boat, his
+thoughts were particularly active. There were
+things to be done. He would see that they <i>were</i>
+done, in the end; he surely would. By going
+down in the steel ball as many times as Dave
+wanted him to, and by taking pictures, he&rsquo;d
+put Dave in debt to him. Then he&rsquo;d persuade
+Mildred to go down in the steel ball. Dave
+would like that. Then, at just the right time,
+he and Mildred would ask Dave to help find
+that trading boat at the bottom of the sea,
+and to float it once more.</p>
+<div class="pb" id="Page_55">[55]</div>
+<p>Then they would get busy on those spies, he
+and Mildred and&mdash;and anyone else who would
+help. It was a patriotic duty, by thunder! It
+surely was! In his mind&rsquo;s eye he saw the map
+of the Caribbean Sea, these islands at one side,
+the Panama Canal on the other. If the Europeans
+got these islands, what would happen to
+the canal? Filled with rocks and mud&mdash;that was
+the answer! They&rsquo;d bomb the very daylights
+out of it. Yes, they must uncover those spies&mdash;at
+least some of them. He wondered whether
+the green arrow would show tonight, and
+whether he would be able to make any sense
+out of the numbers he had written down in
+his notebook.</p>
+<p>&ldquo;It&rsquo;s some sort of code,&rdquo; he told himself repeatedly.
+&ldquo;If I can decipher it we may get
+somewhere.&rdquo;</p>
+<p>But here he was alongside the <i>Sea Nymph</i>,
+and Dave was saying:</p>
+<p>&ldquo;Hello, Johnny. We&rsquo;re shifting our position
+tonight&mdash;coming in a little closer. Tomorrow
+afternoon I&rsquo;d like you to go down with me to
+get some pictures. You won&rsquo;t mind, will you?&rdquo;</p>
+<div class="pb" id="Page_56">[56]</div>
+<p>That was exactly what Johnny had planned.
+&ldquo;No, I won&rsquo;t mind,&rdquo; he said, &ldquo;that will
+be keen.&rdquo;</p>
+<p>A mist drifted out over the ocean. All that
+night Johnny paced the deck in a chill fog.
+No green light showed from the island hills.
+Once he thought he heard men&rsquo;s voices, but
+nothing came of it. He was glad enough when
+he could crawl into his berth, draw his blankets
+over him, and lose himself in sleep.</p>
+<p>When he awoke the sun was shining. It was
+mid-afternoon, and Dave was waiting for him
+to appear, for their trip below.</p>
+<p>&ldquo;What a life!&rdquo; he murmured. After he had
+gulped some hot coffee, hurriedly bolted some
+seabiscuits and a piece of pie he reappeared
+on deck.</p>
+<p>&ldquo;All ready?&rdquo; Dave asked.</p>
+<p>&ldquo;Soon as I get my camera and things.&rdquo;</p>
+<p>&ldquo;Good! I&rsquo;ll have the steel ball in shape
+P.D.Q.,&rdquo; Dave grinned, good-naturedly.</p>
+<div class="pb" id="Page_57">[57]</div>
+<p>&ldquo;He&rsquo;s really a nice chap,&rdquo; Johnny thought.
+&ldquo;Only he takes science and discovery pretty
+seriously. I suppose we&rsquo;ll discover some saber-toothed
+viper fish, or maybe some flying
+snails!&rdquo; He smiled at his thoughts. Life was
+not half bad after all.</p>
+<p>Half an hour later he was experiencing such
+thrills as only the deep, deep sea could bring.
+Some five hundred feet beneath the surface of
+the sea he sat doubled up in his place, staring
+at an ever changing panorama. A rocky wall,
+not twenty feet from him, stood up like a sky-scraper,
+straight and tall. Here and there it was
+broken by fissures and caves. Everywhere it
+was festooned with sea vegetation&mdash;seaweed,
+kelp, anemones. All these, with coral that rose
+like Gothic architecture, were entrancing.</p>
+<p>Dave was by his side&mdash;not to admire, but to
+record. The look on his face was almost
+solemn. As they moved slowly downward Dave
+spoke into a small microphone and Doris, up
+on deck, recorded his words. Strange words
+they were, too: &ldquo;A school of parrot fish; three
+hatchet fish; two round-mouths; a golden-tailed
+serpent dragon; a&mdash;oh&mdash;oh!&mdash;Hold everything!&rdquo;</p>
+<div class="pb" id="Page_58">[58]</div>
+<p>At that instant Dave&rsquo;s window was opposite
+a dark cavern. As he threw on a more
+powerful light he caught the gleam of two,
+great eyes. How far apart they were!</p>
+<p>Despite his efforts to remain calm, Johnny&rsquo;s
+heart skipped a beat as, at Dave&rsquo;s command,
+he touched his moving-picture camera and set
+it recording. What sort of creature was this?
+A whale? A blackfish? Or some strange, unknown
+denizen of the deep? Suppose at this
+instant it should become enraged, should rush
+out of its hiding place and drag the steel ball
+out into the deep&mdash;to send it crashing against
+the rocky wall? A broken window would mean
+instant death. And yet Johnny&rsquo;s hand did not
+tremble as he adjusted his camera....</p>
+<p>Just after the steel ball had gone over the
+side, Mildred Kennedy, in her dugout canoe,
+had arrived for a visit. It had called for real
+courage, this little journey. From a distance
+these <i>Sea Nymph</i> people had seemed so serious.
+All but Johnny. &ldquo;But it&rsquo;s not decent to stay
+away and not be properly sociable,&rdquo; she had
+told her grandfather. So here she was.</p>
+<div class="pb" id="Page_59">[59]</div>
+<p>There had been time only for a brief word
+of welcome from Doris. After that, whispering
+excitedly&mdash;&ldquo;Dave and Johnny are below in the
+steel ball. It&mdash;it&rsquo;s dreadfully thrilling, even here
+on deck,&rdquo; Doris had clamped a pair of head-phones
+over her guest&rsquo;s ears and had whispered
+tensely:</p>
+<p>&ldquo;Listen!&rdquo;</p>
+<p>So they were seated on the deck of the <i>Sea
+Nymph</i>, listening intently for reports from below.
+At the same time, they talked.</p>
+<p>&ldquo;I came to visit my grandfather,&rdquo; Mildred
+said, &ldquo;just as sort of a lark. I was storm bound
+indoors for two weeks, and when I saw how
+simple and kind the natives were, the happy,
+free life they lived, and yet how many things
+could be done for them, I wanted to stay. So
+I just did. And I am glad. Only&mdash;&rdquo; A shadow
+passed over her face.</p>
+<p>&ldquo;Listen!&rdquo; Doris held up a finger. &ldquo;Thought
+I heard a whisper. It&mdash;it couldn&rsquo;t be Dave! I&mdash;I
+hope nothing has gone wrong. It&rsquo;s truly
+dangerous being down there, and yet one does
+learn so much&mdash;&rdquo;</p>
+<div class="pb" id="Page_60">[60]</div>
+<p>&ldquo;Shish!&rdquo; Mildred held up a finger. &ldquo;I&mdash;listen&mdash;I
+hear a whisper! It&mdash;it&rsquo;s numbers he&rsquo;s
+saying. How strange!&rdquo;</p>
+<p>As the two girls sat in silence, pressing the
+phones to their ears, listening with their every
+sense, they caught&mdash;in a low whisper:</p>
+<p>&ldquo;Two hundred&mdash;and&mdash;eight&mdash;and a half. Ten.
+No&mdash;now a drop&mdash;thirty, thirty-one&mdash;two&mdash;three&mdash;&rdquo;</p>
+<p>Then Dave&rsquo;s voice boomed through, drowning
+out the whisper. &ldquo;O.K. We saw some sort
+of monster,&rdquo; he was saying. &ldquo;He was in one
+of these caverns and Johnny got his picture&mdash;we
+hope! Wish you were down here.&rdquo;</p>
+<p>&ldquo;So do we!&rdquo; Doris&rsquo; voice exclaimed. &ldquo;We
+heard a whisper. Thought you might&mdash;&rdquo;</p>
+<p>&ldquo;You&rsquo;ve been dreaming!&rdquo; Dave boomed back.
+&ldquo;Forget it&mdash;and tell that man at the cable to
+let us down again, slowly. Boy!&mdash;how I do want
+to see things!&rdquo;</p>
+<p>Yes, Dave wanted to see things. Most of all,
+on this particular day he wished to go down&mdash;down&mdash;down
+into the watery depths, to discover,
+if possible, just how far down, sea vegetation
+and coral were to be found.</p>
+<div class="pb" id="Page_61">[61]</div>
+<p>&ldquo;If only I don&rsquo;t find bottom too soon,&rdquo; he
+thought. &ldquo;And if the sea remains calm.&rdquo;</p>
+<p>The sea. He shuddered a little at this. If
+the anchors held&mdash;all would be well. But if
+they should give way&mdash;that would be truly terrible.
+To the right and left of them, not a
+quarter-mile apart, were parallel walls of rock.
+To be dragged against one of these&mdash;? Who
+could tell what disaster might result!</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>In the meantime, as they listened, the two
+girls talked of many things, of home, of
+thrilling tropical nights, of Mildred&rsquo;s sunken
+schooner and many other things.</p>
+<p>Of a sudden, their conversation was interrupted
+by a sound, conveyed through their
+head-phones.</p>
+<p>&ldquo;Sh&mdash;&ldquo;&mdash;Doris&rsquo; hand went up. &ldquo;It&rsquo;s that
+strange whisper again!&rdquo;</p>
+<p>&ldquo;Whispering waters!&rdquo; Mildred murmured.
+&ldquo;How mysterious!&rdquo;</p>
+<p>Low as her tone was, the whisperer apparently
+caught it, for&mdash;still in that hoarse
+whisper&mdash;there came back:</p>
+<div class="pb" id="Page_62">[62]</div>
+<p>&ldquo;So we are mysterious! How very grand!
+And it was a lady who spoke!&rdquo;</p>
+<p>Once again Dave&rsquo;s voice broke in upon the
+whisperer: &ldquo;Doris!&rdquo; Tenseness was evident in
+his tone. &ldquo;Doris!&mdash;Tell them to hold us right
+where we are!&rdquo;</p>
+<p>&ldquo;<i>Hold it!</i>&rdquo; Doris called to the windlass man,
+instantly.</p>
+<p>&ldquo;<i>Hold it</i>,&rdquo; came back the quick acknowledgment.</p>
+<p>&ldquo;All this,&rdquo; Doris said to Mildred, &ldquo;is most
+provoking. You are just dying to know what
+strange things are happening below, what marvelous
+discoveries are being made&mdash;but the
+only part you have in it is listening and
+waiting!&rdquo;</p>
+<p>Down in the steel ball, Dave had caught a
+movement to the right, away from the cliff.
+Switching his light in that direction he had
+discovered a huge, dark object moving slowly
+through the water.</p>
+<p>&ldquo;It&rsquo;s that &lsquo;thing&rsquo;!&rdquo; he told himself. &ldquo;The very
+thing I&rsquo;ve seen before!&rdquo;</p>
+<div class="pb" id="Page_63">[63]</div>
+<p>To his great disappointment, the form was
+as indistinct as before. That it might be a
+whale he knew quite well. He suggested the
+idea to Johnny.</p>
+<p>&ldquo;But it&rsquo;s not a whale&mdash;I&rsquo;m sure of it!&rdquo; Johnny
+whispered. Swinging his moving-picture
+camera into range, he managed to catch the
+rear half of it before it passed from view.</p>
+<p>&ldquo;The camera sees more than the eye,&rdquo; he
+murmured. &ldquo;Here&rsquo;s hoping.&rdquo;</p>
+<p>Dave turned again to his task of exploring
+the under-sea wall. He signalled their continued
+descent.</p>
+<p>A moment later the ear-phones on deck were
+silent. Both Dave and the mysterious whisperer
+were unheard.</p>
+<p>&ldquo;Who <i>could</i> that have been?&rdquo; Mildred asked.</p>
+<p>&ldquo;I&rsquo;ve no idea,&rdquo; was Doris&rsquo; reply.</p>
+<p>&ldquo;Do you know,&rdquo; Mildred added dreamily, &ldquo;I
+have a feeling that whisperer was not far away!&rdquo;</p>
+<p>Doris started to speak but checked herself,
+suddenly. Once again she had caught the weird
+tones of the whisperer.</p>
+<div class="pb" id="Page_64">[64]</div>
+<p>&ldquo;One-eighty&mdash;eighty-two&mdash;eighty-six,&rdquo; he
+droned. Then he raised his voice above the
+whisper, and called:</p>
+<p>&ldquo;Hello there&mdash;you mermaids! Are you still
+there?&rdquo;</p>
+<p>&ldquo;He <i>must</i> be near us!&rdquo; Doris exclaimed. &ldquo;If
+not&mdash;why would he call us &lsquo;mermaids&rsquo;?&rdquo;</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>At that same instant Dave was experiencing
+a thrill. Arrived at a spot opposite a broad
+shelf on the perpendicular wall, he and Johnny
+found themselves within five feet of the rock.
+Vegetation, which had been thinning out, was
+just disappearing.</p>
+<p>And then Dave saw it&mdash;a long, wavering arm,
+reaching out for the steel ball. Involuntarily,
+he started back from the window. Then he
+laughed.</p>
+<p>A second arm appeared. Then, a third.</p>
+<p>&ldquo;Octopus!&rdquo; he whispered to Johnny. &ldquo;Such
+a monster!&rdquo; Instantly his light was on, and
+Johnny&rsquo;s movie camera was grinding away.</p>
+<div class="pb" id="Page_65">[65]</div>
+<p>&ldquo;Only one of his kind I&rsquo;ve ever seen!&rdquo; Dave
+was thrilled to the tips of his toes. &ldquo;Wish he&rsquo;d
+climb on board and let us take him up. He
+won&rsquo;t do that, but I&rsquo;ll get him, all the same!
+Some time I&rsquo;ll get him!</p>
+<p>&ldquo;How ugly he is! See how his eyes shine,
+Johnny! People sure would throng around him
+in an aquarium! Put him in with some gorgeous,
+tropical fish and you&rsquo;d have a &lsquo;beauty
+and the beast&rsquo; show! You&mdash;&rdquo;</p>
+<p>Suddenly he stopped speaking, to stare
+straight at the wall. They were moving away!
+There could be no doubt of it. Fascinated by
+the strangeness of the situation, he and Johnny
+sat motionless while the octopus faded from
+sight. Two yards&mdash;three&mdash;five&mdash;ten&mdash;twenty&mdash;they
+were swinging off! And behind him was
+a second wall, against which the window of
+the steel ball might crack like an egg shell.</p>
+<p>At that instant Dave heard a strange voice
+repeating an idiotic question:</p>
+<p>&ldquo;<i>Hello there, you mermaids. Are you still there?</i>&rdquo;</p>
+<p>The very sound of a human voice seemed
+to rouse him.</p>
+<p>&ldquo;Doris!&rdquo; he called. &ldquo;The anchors have pulled
+loose! The ship is drifting!&rdquo;</p>
+<div class="pb" id="Page_66">[66]</div>
+<p>&ldquo;<i>Hello, there</i>,&rdquo; called that same voice. &ldquo;<i>So
+you&rsquo;re not a mermaid, after all!</i>&rdquo;</p>
+<p>Something had gone wrong with Dave&rsquo;s
+radio, Doris thought. His voice did not come
+through clearly.</p>
+<p>&ldquo;Hello! Hello Dave!&rdquo; Doris called. &ldquo;Repeat!
+What did you say?&rdquo;</p>
+<p>&ldquo;<i>I said are you a mermaid?</i>&rdquo; came in that teasing
+voice.</p>
+<p>&ldquo;Get off the air!&rdquo; Doris stormed.</p>
+<p>&ldquo;Doris!&rdquo; Dave roared. His voice came
+through clearly now. &ldquo;The ship&rsquo;s adrift! Tell
+the captain to order our main anchor line
+played out&mdash;to pull hard to port!&rdquo;</p>
+<p>&ldquo;Anchor line out! Hard to port!&rdquo; the girl
+cried.</p>
+<p>&ldquo;Anchor line out. Hard to port!&rdquo; came booming
+back the repetition.</p>
+<p>Instantly Doris found her head in a whirl.
+Dave and Johnny were down a full thousand
+feet. On each side of their ball a rock wall
+rose high above them. To crash against it
+might mean disaster.</p>
+<p>&ldquo;Haul away&mdash;Top speed!&rdquo; came in Dave&rsquo;s
+usual calm voice.</p>
+<div class="pb" id="Page_67">[67]</div>
+<p>&ldquo;Haul away. Top speed!&rdquo; Doris called to the
+control man.</p>
+<p>Complete silence followed. Even the &ldquo;whisperer&rdquo;
+appeared to have sensed the tenseness
+of the situation and had gone off the air.</p>
+<p>That there was to be a race against time
+with their lives as a grand prize, Johnny realized
+at once. Here they were, several hundred
+feet down in the black depths of the sea, drifting
+at a fairly rapid rate toward a rocky wall.
+If they hit that wall? He shuddered at the
+thought. The pressure of water at that depth
+was tremendous. If the ball cracked, nothing
+could save them.</p>
+<p>&ldquo;Is there anything at all we can do?&rdquo; he
+asked Dave.</p>
+<p>&ldquo;Not a thing, I guess,&rdquo; Dave answered. Then,
+&ldquo;Yes! Yes, there might be, at that! There are
+the levers! They are <i>outside</i> the ball and can
+be worked from <i>within</i>! I had them fixed up
+for gathering outside samples. If we lifted
+them into position, they&rsquo;d lessen the shock if
+we hit the wall!&rdquo;</p>
+<div class="pb" id="Page_68">[68]</div>
+<p>No sooner said than done! Groping about,
+Johnny seized a handle here, another there, as
+Dave was doing. He felt much better when
+the outside levers were in position. They would
+provide a little protection, at least.</p>
+<p>With astonishing speed, now, the wall approached.
+They could see every detail of the
+seagrowth clinging there. &ldquo;Ten yards,&rdquo; Johnny
+guessed. &ldquo;Eight&mdash;five&mdash;three&mdash;&rdquo; He was sitting
+on the inner handle of the lever and gripping
+the other hard. &ldquo;Now&mdash;now comes the test!&rdquo;
+he breathed.</p>
+<p>The words were hardly out of his mouth
+when there came a grinding impact that all
+but lifted him from his place. And then&mdash;they
+were free of the ledge!</p>
+<p>&ldquo;Free!&rdquo; Dave cried joyously. &ldquo;Doris! We are
+safe!&rdquo; he called into his speaker.</p>
+<p>The ball rose slowly above the top of the
+ledge.</p>
+<p>Dave, however, had spoken too soon. Scarcely
+had he settled back when a great spiral of
+coral, like the towers of a church, appeared to
+leap at them. This, he knew, grew from the
+top of the ledge.</p>
+<div class="pb" id="Page_69">[69]</div>
+<p>There was just time for a lightning decision,
+but they were prepared for it.</p>
+<p>&ldquo;This lever is closest,&rdquo; Dave exclaimed. &ldquo;It&rsquo;s
+our window or the lever!&rdquo;</p>
+<p>Throwing their whole weight on the lever
+handle, they waited a second&mdash;two&mdash;three&mdash;ten&mdash;twenty.
+Johnny heard his watch ticking
+them off....</p>
+<p>Then came the heavy jolt. He was thrown
+so violently that his head struck the top, and
+his senses reeled.</p>
+<p>When at last he was able to sit up and look
+out, he murmured a fervent &ldquo;Thank God.&rdquo; For
+the hazard was past. The glorious blue of
+water was all about them.</p>
+<p>Fifteen minutes later the steel ball rested on
+the <i>Sea Nymph&rsquo;s</i> deck. A few more moments
+and, hands first, like frogs leaping from a jar,
+the two tumbled out on the deck.</p>
+<p>&ldquo;Hel&mdash;hello, folks!&rdquo; Dave said, standing up
+a trifle unsteadily. &ldquo;How&rsquo;s the weather up
+here?&rdquo;</p>
+<div class="pb" id="Page_70">[70]</div>
+<p>&ldquo;That,&rdquo; said Doris, gripping Dave&rsquo;s arm
+without realizing it and giving Johnny a happy
+smile, &ldquo;that was awful!&rdquo;</p>
+<p>Mildred, gazing at them admiringly, echoed
+the thought.</p>
+<p>&ldquo;How about a glass of lemonade, and&mdash;and
+something to go with it?&rdquo; Dave demanded.
+&ldquo;Chocolate coated marshmallow cake, macaroons,
+and&mdash;&rdquo;</p>
+<p>&ldquo;Dave, you&rsquo;ll get fat,&rdquo; Doris laughed.</p>
+<p>&ldquo;And then I wouldn&rsquo;t be able to get into
+the steel ball. Wouldn&rsquo;t that be grand?</p>
+<p>&ldquo;But no!&rdquo; Dave answered his own question.
+&ldquo;It wouldn&rsquo;t! Not at all. For I&rsquo;ve been seeing
+things&mdash;wonderful things! And I&rsquo;m going back
+tomorrow!&rdquo;</p>
+<p>After their little feast on deck, Doris accompanied
+Mildred to the boat&rsquo;s side, gave her a
+hand as she dropped lightly into her dugout,
+and said in a friendly tone:</p>
+<p>&ldquo;You&rsquo;ll come again, won&rsquo;t you&mdash;very soon?&rdquo;</p>
+<p>&ldquo;Oh, yes!&rdquo; Mildred exclaimed. &ldquo;I&rsquo;ll fairly
+haunt you from now on, for we do get a little
+lonely&mdash;grandfather and I. But you must all
+come over and see us too! Won&rsquo;t you?&rdquo;</p>
+<div class="pb" id="Page_71">[71]</div>
+<p>&ldquo;Oh, yes, very soon,&rdquo; Doris answered,
+cordially.</p>
+<p>&ldquo;Day after tomorrow is Sunday&mdash;how about
+then?&rdquo;</p>
+<p>&ldquo;I&rsquo;ll let you know. It&rsquo;s up to Dave, really.
+He&rsquo;s so absorbed he almost forgets to eat. You
+see,&rdquo; Doris went on, &ldquo;he&rsquo;s very fond of my
+grandfather, and wants to help all he can.&rdquo;</p>
+<p>&ldquo;These grandfathers of ours!&rdquo; Mildred
+laughed.</p>
+<p>Half an hour later Johnny came upon Doris,
+standing before an easel and putting the last
+touches on a picture of the sea, the island, and
+a gorgeous sunset.</p>
+<p>&ldquo;I didn&rsquo;t know you were an artist,&rdquo; he said
+in genuine surprise.</p>
+<p>&ldquo;I&rsquo;m not,&rdquo; Doris frowned. &ldquo;I only make a
+try at it. Those colors! You never can get them
+just right!&rdquo;</p>
+<p>&ldquo;Looks swell!&rdquo; Johnny said, admiringly.
+&ldquo;Wish I could do half so well. Why don&rsquo;t you
+try an <i>underseascape</i>?&rdquo;</p>
+<p>&ldquo;What would that be?&rdquo; Doris wrinkled her
+brow.</p>
+<div class="pb" id="Page_72">[72]</div>
+<p>&ldquo;You go to the bottom of the sea, fifty feet
+or so down, in a diving helmet. You set your
+easel on the bottom, weight it down, and
+paint&mdash;whatever you see there!&rdquo;</p>
+<p>&ldquo;Not really?&rdquo;</p>
+<p>&ldquo;I read about it in a book. Found it in the
+ship&rsquo;s library. Anyway&mdash;it would be fun
+trying.&rdquo;</p>
+<p>&ldquo;Water would spoil your paint.&rdquo;</p>
+<p>&ldquo;It says not,&rdquo; Johnny grinned. &ldquo;Only trouble
+is&mdash;little fish, like flies, get into your paint!&rdquo;</p>
+<p>&ldquo;I&rsquo;ll try it some time,&rdquo; Doris declared. &ldquo;I&rsquo;ve
+been down twice with Dave. It&rsquo;s thrilling&mdash;walking
+on the bottom of the sea. Thanks for
+the idea, Johnny!&rdquo;</p>
+<div class="pb" id="Page_73">[73]</div>
+<h2 id="c6"><span class="small">CHAPTER VI</span>
+<br />REAL PROGRESS!</h2>
+<p>After going on duty that night, Johnny
+came upon Samatan, leader of the boat&rsquo;s
+native crew. He was seated in a corner, but
+one of the ship&rsquo;s lamps lighted his face. He
+was staring at the steel ball and there was unmistakable
+animosity in his expression.</p>
+<p>&ldquo;Looks as if he&rsquo;d like to eat it,&rdquo; Johnny
+mused. &ldquo;Wonder what it&rsquo;s all about.&rdquo;</p>
+<p>A little later he heard the natives talking in
+their quarters below deck.</p>
+<p>&ldquo;Sounds as if they were angry about something,&rdquo;
+he told himself. More than once he
+heard Samatan&rsquo;s voice rising above the rest,
+as if he were making some sort of speech. He
+wondered if it could be possible that the
+European spies had somehow inspired these
+natives with hate for <i>all</i> Americans.</p>
+<div class="pb" id="Page_74">[74]</div>
+<p>&ldquo;That would be bad,&rdquo; he thought. &ldquo;It might
+spell disaster.&rdquo; He resolved to cultivate
+Samatan&rsquo;s acquaintance to find out, if possible,
+just what his grievance was. Then he
+might put things to rights.</p>
+<p>Maybe some superstition is connected with
+the steel ball, Johnny reflected. When you are
+among primitive people you never know quite
+what to expect.</p>
+<p>That night the green arrow blinked again.
+Johnny saw it, shortly after midnight. The
+boat was closer in, now, and he could make
+out the separate lights of the arrow as they
+flashed, up there on the hillside. If there was
+another light out at sea, it must have been far
+away&mdash;or too low to be visible. He caught no
+sight of it.</p>
+<p>When the arrow appeared, Johnny got busy
+at once. With small circles, like coins in a row,
+he sketched an arrow, in pencil.</p>
+<p>From the tip of the flashing arrow to the
+other end, there were thirteen lights. Besides,
+there were two lights slanting back on each
+side, at the tip. These four helped form the
+head of the arrow. Four others, in pairs, made
+the feather end.</p>
+<div class="pb" id="Page_75">[75]</div>
+<p>As he watched intently through powerful
+binoculars loaned him by the professor,
+Johnny noted that the thirteen lights blinked
+separately, but the eight which comprised the
+head and feather of the arrow, blinked in
+unison.</p>
+<p>&ldquo;Those eight lights must stand for a period,&rdquo;
+he concluded. &ldquo;The thirteen are letters, or code
+numbers. I wonder how they work.&rdquo;</p>
+<p>For some time, as on that other occasion,
+Johnny recorded the winking and blinking of
+the lights. When at last the green arrow
+became dark, he took a turn about the deck,
+then settled down to the task of trying to
+figure that code. Dawn found him still figuring,
+but seemingly no nearer the solution.</p>
+<p>&ldquo;Dumb!&rdquo; he exploded at last, as he crammed
+the notebook into his pocket and went to
+breakfast. When he returned to the deck late
+that afternoon he found Doris and Dave
+working over some notes.</p>
+<div class="pb" id="Page_76">[76]</div>
+<p>&ldquo;Hello, Johnny. How about those pictures
+we took yesterday?&rdquo; It was Dave who spoke.</p>
+<p>&ldquo;Oh, yes,&rdquo; Johnny exclaimed. He had forgotten
+them. &ldquo;Come on to the darkroom, if
+you like. I&rsquo;ll develop them right away.&rdquo;</p>
+<p>Doris accompanied them to the darkroom.
+There, fascinated, they watched strange creatures
+of the depths come out on the film.</p>
+<p>The great, shadowy creature which had
+peered out from a rocky cavern was, the picture
+revealed, a veritable deep-sea monster.</p>
+<p>&ldquo;If only I could bring him up!&rdquo; Dave exclaimed.
+&ldquo;But then, he&rsquo;d never live at surface
+levels. But our great, sea-green octopus, I do
+believe, could live anywhere. I&rsquo;m going after
+him!&rdquo;</p>
+<p>Most interesting of all&mdash;and most baffling&mdash;was
+the picture Johnny had taken of the great,
+slow-moving thing seen in the open water far
+from the rocks.</p>
+<p>&ldquo;Oh, that!&rdquo; exclaimed Dave, as it began coming
+out in the film, &ldquo;that&rsquo;s really a monster
+for you!&rdquo;</p>
+<p>&ldquo;If it <i>is</i> a monster,&rdquo; said Johnny, in a tone
+of mystery.</p>
+<div class="pb" id="Page_77">[77]</div>
+<p>Whatever it might be, the picture only
+added to the mystery. Too far away, too
+indistinct to be seen clearly, the thing might
+have been a whale, or some other form of
+deep-sea monster. Truth was&mdash;deep down in
+his heart Johnny believed it to be neither. His
+theories were too fantastic to be put into
+words&mdash;at the moment.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>Their afternoon ashore the following day
+proved interesting, inspiring, and exciting.</p>
+<p>They were served a grand meal of native
+wild turkey, baked sweet potatoes and all
+manner of delicious, tropical fruits. After that,
+Mr. Kennedy took Dave, Doris and the
+professor for a look at some unusual wild
+birds, nesting at the edge of the jungle.</p>
+<p>Johnny settled himself comfortably in a
+split-bamboo chair and gave himself over to
+wondering and dreaming.</p>
+<div class="pb" id="Page_78">[78]</div>
+<p>Mildred had gone to supervise the washing
+of her precious dishes&mdash;some of which dated
+back to ancient buccaneer days&mdash;so Johnny
+was alone with his thoughts. And strange
+thoughts they were.... He recalled having heard
+the bearded giant Kennedy saying to the
+professor&mdash;too much absorbed in research to
+pay much attention&mdash;&ldquo;Those men, those Europeans!
+They starve their own people, and use
+the money to buy gunboats and cannon. They
+are slaves&mdash;those people&mdash;slaves! If we don&rsquo;t
+watch out <i>we&rsquo;ll</i> be slaves, too!... Look at this
+Caribbean Sea! More important than the
+Mediterranean ever was! And who&rsquo;s to stop
+them from taking possession of these islands?
+Why, even the president of this poor little
+Republic is in debt to them! Up to his ears!&rdquo;</p>
+<p>Was Kennedy right? Johnny wondered,
+dreamily. What of that signal up there on the
+ridge&mdash;the signal of the green arrow? Was <i>it</i>
+operated by spies? And if so&mdash;what had they
+been saying with those blinking lights?
+What&mdash;</p>
+<p>&ldquo;Penny for your thoughts!&rdquo; Mildred was
+back.</p>
+<p>&ldquo;Not worth it.&rdquo; Johnny stood up. &ldquo;Tell you
+what, though&mdash;I&rsquo;ll play you a game!&rdquo;</p>
+<p>&ldquo;What sort of game?&rdquo;</p>
+<div class="pb" id="Page_79">[79]</div>
+<p>&ldquo;Game of the Green Arrow. The object is
+to discover what it says!&rdquo;</p>
+<p>Drawing up a small table, Johnny spread a
+notebook and some papers on it.</p>
+<p>&ldquo;Now,&rdquo; he said. &ldquo;Here&rsquo;s a drawing of the
+green arrow. Twenty-one green lights make the
+arrow. Thirteen in a row,&rdquo; he pointed out, &ldquo;two
+here, two there, and two more on each side
+at the other end. The last eight blink all at
+the same time, but the thirteen&mdash;only one at
+a time. By their blinking they are conveying
+messages. But what do they say? Here&rsquo;s a set
+of papers with records of their blinking, all
+marked with numbers. If you can work that
+out, you go to the head of the class!&rdquo;</p>
+<p>&ldquo;I see. Easy as that!&rdquo; Mildred laughed, and
+promptly seated herself across from him.</p>
+<p>After that, save for the lazy hum of bees
+or the sudden whir of humming birds&rsquo; wings,
+there was silence in the place....</p>
+<p>Suddenly the girl sprang up. &ldquo;Why, I&mdash;I&rsquo;ve
+got it!&rdquo; she cried, excitedly.</p>
+<p>&ldquo;Just like that!&rdquo; Johnny smiled.</p>
+<div class="pb" id="Page_80">[80]</div>
+<p>&ldquo;Well, I certainly have! Listen! This is what
+that first message says:</p>
+<p>&ldquo;<i>Keep a sharp lookout. There are counter-spies
+afloat.</i>&rdquo;</p>
+<p>&ldquo;WHAT! Gee willikens!&rdquo; Johnny gazed at
+her, truly amazed. &ldquo;How could you make it
+read like that?&rdquo;</p>
+<p>&ldquo;Because that&rsquo;s the way it <i>does</i> read!&rdquo; she
+raced on. &ldquo;It&rsquo;s really easy. There are twenty-six
+letters in the alphabet. Having thirteen lights
+suggests that they have split that twenty-six
+<i>in two</i>. Each light must stand for <i>two</i> letters.
+But the question is&mdash;which two? Well, the <i>top</i>
+thirteen stand for A, B, C, etc. But what
+about the bottom ones?</p>
+<p>&ldquo;The simplest way,&rdquo; she leaned forward,
+smiling, &ldquo;would be to put the <i>last</i> thirteen
+letters under the <i>first</i> thirteen! Then, blinking
+<i>one</i> light for <i>two</i> letters, let the fellow receiving
+the message see <i>which</i> of the two letters makes
+sense.</p>
+<p>&ldquo;I tried that,&rdquo; she went on &ldquo;and it didn&rsquo;t
+make any sense at all, so I ran the <i>last</i>
+thirteen, backwards. By trying each of the two
+possible letters in each instance, I got the
+message I just read to you.&rdquo;</p>
+<div class="pb" id="Page_81">[81]</div>
+<p>&ldquo;Which must be just about right,&rdquo; Johnny
+breathed. &ldquo;Mildred&mdash;you&rsquo;re a wonder! Now let
+the old green arrow blink! We&rsquo;ll always know
+what it&rsquo;s saying&mdash;and we may make some
+startling discoveries.&rdquo; With that he seized her
+hands and whirled her wildly about the broad
+porch.</p>
+<p>&ldquo;List&mdash;listen,&rdquo; she panted, as, quite out of
+breath, she dropped into a chair, &ldquo;what&rsquo;s
+that?&rdquo;</p>
+<p>&ldquo;Natives singing, I suppose&rdquo; said Johnny,
+&ldquo;they are fond of singing.&rdquo;</p>
+<p>&ldquo;Those singers are not natives!&rdquo; The girl
+held up a hand for silence. &ldquo;They never sing
+like that. Besides&mdash;all those voices are men&rsquo;s!&rdquo;</p>
+<div class="pb" id="Page_82">[82]</div>
+<h2 id="c7"><span class="small">CHAPTER VII</span>
+<br />MYSTERY SINGERS OF THE NIGHT</h2>
+<p>Mildred was leaning forward, lips parted,
+listening intently.</p>
+<p>&ldquo;What are they singing?&rdquo; she whispered.</p>
+<p>&ldquo;I can&rsquo;t make it out,&rdquo; was Johnny&rsquo;s slow
+reply. &ldquo;Too far away. Besides&mdash;it doesn&rsquo;t
+sound like English, at all.&rdquo;</p>
+<p>&ldquo;Now,&rdquo; she said, softly, &ldquo;now it is coming
+out stronger.&rdquo; A sudden breeze wafted the
+distant voices toward them.</p>
+<p>&ldquo;It&rsquo;s a funny old song,&rdquo; said Johnny. &ldquo;I&rsquo;ve
+heard it somewhere. Perhaps it&rsquo;s from light
+opera.&rdquo;</p>
+<p>&ldquo;But how strange to be singing that, here!
+Who could they be?&rdquo;</p>
+<p>&ldquo;Who knows?&rdquo; Johnny answered slowly.</p>
+<p>&ldquo;Now they&rsquo;re coming closer,&rdquo; he said a
+moment later. &ldquo;Must be eight or ten of them!&rdquo;</p>
+<div class="pb" id="Page_83">[83]</div>
+<p>&ldquo;Suppose they come all the way?&rdquo; She
+gripped his arm firmly. &ldquo;That would be&mdash;&rdquo;</p>
+<p>&ldquo;I think we&rsquo;ll take care of ourselves,
+Mildred.&rdquo; His tone was deeply serious. &ldquo;Some
+time,&rdquo; he added, reflectively, &ldquo;we&rsquo;ll go up to
+that ancient castle that was a fort&mdash;and,
+perhaps, a prison!&rdquo;</p>
+<p>&ldquo;We might, some day. Only&mdash;&rdquo;</p>
+<p>&ldquo;Only what?&rdquo;</p>
+<p>&ldquo;It might be dangerous.&rdquo;</p>
+<p>&ldquo;Poof!&mdash;What is danger?&rdquo;</p>
+<p>&ldquo;I know. That&rsquo;s the way I feel, sometimes.
+What&rsquo;s the use of being afraid of&mdash;of anything?</p>
+<p>&ldquo;But we&rsquo;d have to find the right trail,&rdquo; she
+added. &ldquo;Those hills are terrible. They&rsquo;re all cut
+up with ravines. There are animal trails and
+native trails running everywhere. It&mdash;it&rsquo;s
+almost impossible to keep them straight.&rdquo;</p>
+<p>After that, for a time, they were silent. The
+sound of singing, coming ever closer, increased
+in volume. The tunes changed, but not once
+could they understand the words. It was
+strange.</p>
+<div class="pb" id="Page_84">[84]</div>
+<p>Somewhere in the jungle a jaguar screamed
+Nearer at hand some night-bird sang: &ldquo;Oh&mdash;poor&mdash;me!
+Oh&mdash;poor&mdash;me!&rdquo;</p>
+<p>&ldquo;It&rsquo;s dark,&rdquo; Johnny whispered. &ldquo;Seems like
+the folks should be back?&rdquo;</p>
+<p>&ldquo;They were going quite a distance, and anyhow
+they took flashlights.&rdquo;</p>
+<p>To Johnny, the place suddenly seemed deserted
+and silent. Seeing a high-power rifle in
+the corner, he picked it up and threw back
+the catch. It was loaded. He set it back
+without a sound.</p>
+<p>&ldquo;There!&rdquo; The girl&rsquo;s sudden exclamation
+startled him. &ldquo;They&rsquo;ve stopped singing! I
+expected that!&rdquo;</p>
+<p>&ldquo;Why?&rdquo;</p>
+<p>&ldquo;I don&rsquo;t believe they knew anyone lived here.
+I could tell all the time just how far they were,
+on the trail. I&rsquo;ve heard natives singing over
+that trail a hundred times. The sound changes
+when they reach the clearing.&rdquo;</p>
+<p>&ldquo;And you think&mdash;?&rdquo;</p>
+<p>&ldquo;I think that when they reached the clearing
+they were surprised. They didn&rsquo;t want to be
+seen. That&rsquo;s why they stopped singing. Now
+they must be going back.&rdquo;</p>
+<div class="pb" id="Page_85">[85]</div>
+<p>&ldquo;Or&mdash;coming on!&rdquo; Johnny stepped to the
+corner and took up the rifle.</p>
+<p>&ldquo;No!&rdquo; the girl&rsquo;s tone was decisive. &ldquo;They&rsquo;ve
+turned back.&rdquo;</p>
+<p>A moment passed in silence;&mdash;two&mdash;three&mdash;four&mdash;five.
+Then the girl sprang silently to her
+feet.</p>
+<p>&ldquo;Come!&rdquo; she gripped his hand. &ldquo;Let&rsquo;s go
+have a look!&rdquo;</p>
+<p>Astonished, Johnny caught up the rifle and
+followed. Never had he known anyone who
+could get over a jungle trail so fast in the
+night. She carried a flashlight, but seldom
+used it. Three times she paused to listen. The
+third time, as Johnny stirred slightly in the
+path, she whispered:</p>
+<p>&ldquo;Shish!&rdquo;</p>
+<p>&ldquo;Sounds like oars,&rdquo; Johnny whispered back.</p>
+<p>&ldquo;It <i>is</i> oars!&rdquo; came back in a barely audible
+whisper.</p>
+<p>&ldquo;Then they came by boat.&rdquo;</p>
+<div class="pb" id="Page_86">[86]</div>
+<p>&ldquo;Yes. Come on!&rdquo; Once more she gripped his
+hand and this time they advanced slowly,
+cautiously. Not a twig snapped.</p>
+<p>Once again they paused as a low, bumping
+sound reached their ears.</p>
+<p>A moment more and they came out of the
+jungle, on a broad, sandy beach. Instantly
+Johnny&rsquo;s well-trained eyes swept the sea. The
+moon was just rising. It painted a golden path
+across the waters, far into the distance. But
+there was no sign of a boat.</p>
+<p>&ldquo;Can you beat that!&rdquo; Johnny murmured,
+softly.</p>
+<p>&ldquo;We must have been mistaken,&rdquo; said Mildred,
+wonderingly.</p>
+<p>&ldquo;Only we were not!&rdquo; Johnny thought. But
+he made no comment.</p>
+<p>Gripping his arm, the girl led him along the
+beach until they came upon a mark in the sand.</p>
+<p>&ldquo;A boat was pulled up here,&rdquo; she said,
+positively.</p>
+<p>Johnny threw a gleam of light on the spot.
+&ldquo;Queer sort of mark,&rdquo; he murmured. &ldquo;No
+regular boat! It&rsquo;s like the mark a white man&rsquo;s
+boat would make&mdash;or perhaps a collapsible
+boat.&rdquo;</p>
+<div class="pb" id="Page_87">[87]</div>
+<p>A moment later his eyes caught a faint
+gleam. Pretending to examine the sand, he
+stooped over to pick up a metal disc. Without
+knowing just why, he thrust it into his pocket.</p>
+<p>&ldquo;What she doesn&rsquo;t know won&rsquo;t worry her,&rdquo;
+he told himself a moment later.</p>
+<p>&ldquo;Well,&rdquo; Mildred said, in a tone of forced
+cheerfulness, &ldquo;this seems to be the end of the
+search. Let&rsquo;s go back.&rdquo;</p>
+<p>&ldquo;O.K.&rdquo;</p>
+<p>They turned about and were soon threading
+their way back through the jungle. &ldquo;Johnny,&rdquo;
+she said at last, &ldquo;We need our boat more than
+ever, now.&rdquo;</p>
+<p>&ldquo;For protection as well as profit?&rdquo;</p>
+<p>&ldquo;Yes.&rdquo;</p>
+<p>&ldquo;Ask Dave to take you down in the steel
+ball,&rdquo; Johnny suggested. &ldquo;He&rsquo;ll do it, I&rsquo;m sure,
+as he&rsquo;s in love with the professor&rsquo;s invention.
+Can&rsquo;t say I blame him, either. After that&mdash;ask
+him to help find your boat&rdquo;.</p>
+<p>&ldquo;I&rsquo;ll ask him tonight, if he&rsquo;ll take me down.&rdquo;</p>
+<p>And she did.</p>
+<div class="pb" id="Page_88">[88]</div>
+<p>&ldquo;What&rsquo;s that?&rdquo; Dave asked, as they all sat
+on the porch, a little later. &ldquo;You want to go
+down in our steel ball?&rdquo;</p>
+<p>&ldquo;Yes. Yes&mdash;I&mdash;I&rsquo;d like to.&rdquo; The words took
+real courage, as she did <i>not</i> want to. In fact&mdash;she
+was dreadfully frightened at the thought.
+And yet&mdash;</p>
+<p>&ldquo;Well,&rdquo; said Dave, &ldquo;I don&rsquo;t see why you
+shouldn&rsquo;t&mdash;tomorrow.&rdquo;</p>
+<p>&ldquo;To&mdash;tomorrow?&rdquo; She shuddered slightly,
+but he could not see her, in the dark.</p>
+<p>&ldquo;Yes, tomorrow. There&rsquo;ll be no picture-taking.
+I&rsquo;m going after a sea-green monster&mdash;probably
+the largest octopus anyone ever saw!&rdquo;</p>
+<p>&ldquo;Oh&mdash;o&mdash;o!&rdquo;</p>
+<p>&ldquo;He won&rsquo;t get <i>you</i>,&rdquo; Dave laughed. &ldquo;Can&rsquo;t
+get inside the ball. What do you say? Is it
+a date?&rdquo;</p>
+<p>&ldquo;Yes&mdash;I&mdash;yes! Yes! Sure it is!&rdquo;</p>
+<p>&ldquo;Fine! Can you be on board at eight in the
+morning?&rdquo;</p>
+<p>&ldquo;Yes&mdash;I&mdash;I&rsquo;ll be there. Thanks&mdash;thanks a
+lot!&rdquo;</p>
+<div class="pb" id="Page_89">[89]</div>
+<p>&ldquo;Well,&rdquo; she whispered to Johnny a short
+time later. &ldquo;He&rsquo;s going to take me down!
+Tomorrow! And I&rsquo;m scared pink!&rdquo;</p>
+<p>&ldquo;You needn&rsquo;t be,&rdquo; Johnny laughed. &ldquo;It&rsquo;s
+safer than an auto on Michigan Avenue in
+Chicago! And just think&mdash;you&rsquo;ll be the first
+young lady ever to go down five hundred feet
+beneath the surface of the sea! At least, I imagine
+you will!&rdquo;</p>
+<p>&ldquo;That,&rdquo; she replied with a slightly unsteady
+chuckle, &ldquo;will be a very great honor!&rdquo;</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>As Johnny changed to heavier clothes for his
+watch, later that night, the disc he had found
+on the beach, fell from his pocket.</p>
+<p>He picked it up and realized instantly that
+it was a button from a uniform jacket.</p>
+<p>&ldquo;So that&rsquo;s it!&rdquo; he murmured, as he buried it
+deep in his pocket.</p>
+<div class="pb" id="Page_90">[90]</div>
+<p>A night on this tropical river, into which they
+had come for easier access to the Kennedy
+cottage, was a new and interesting experience
+for Johnny. Mangrove trees, growing far out
+over the river, all but touched the deck. A
+troop of monkeys, apparently planning to cross
+the river on swinging branches, came chattering
+along to burst into a sudden frenzy of fear
+and anger at sight of this intruder. Crocodiles
+floated lazily on the dark surface of the water.
+Their eyes shone like balls of fire when
+Johnny&rsquo;s flashlight was directed at them.</p>
+<p>From the far distance came the singing of
+men and women, a native chant. A little later,
+paddles gleaming in the light, some of the
+singers floated past. Their large dugout was
+loaded with all manner of tropical fruits&mdash;bananas,
+pineapples, wild oranges and mangoes.</p>
+<p>&ldquo;What a life,&rdquo; Johnny murmured, as the
+natives drifted past. He thought of the
+conditions of thousands of persons in the great
+cities of America&mdash;then looked out again at
+that boatload of people. It would be grand,
+he thought, to live here forever. And yet, there
+were the spies, and debts to those Europeans.</p>
+<p>&ldquo;Debts,&rdquo; he sighed, &ldquo;that haunt them till
+they die.&rdquo;</p>
+<p>Doris came on deck. &ldquo;You just <i>can&rsquo;t</i> sleep on
+such a night!&rdquo; she sighed. &ldquo;It&rsquo;s too wonderful&mdash;the
+river, the moonlight, and the dark, mysterious
+jungle at night.&rdquo;</p>
+<div class="pb" id="Page_91">[91]</div>
+<p>&ldquo;And the spies,&rdquo; Johnny added. &ldquo;Don&rsquo;t
+forget them!&rdquo;</p>
+<p>&ldquo;The&mdash;the spies?&rdquo; She stared at him.</p>
+<p>He told her of his adventure with Mildred,
+and, of the mysterious night singers.</p>
+<p>&ldquo;They vanished,&rdquo; he ended. &ldquo;Vanished into
+thin air. And they had a boat of some sort.
+We saw its mark in the sand.&rdquo;</p>
+<p>&ldquo;How thrilling! How sort of spooky!&rdquo; she
+murmured.</p>
+<p>&ldquo;And there&rsquo;s the code of the green arrow,&rdquo;
+Johnny added. &ldquo;We solved that&mdash;or rather
+Mildred did.&rdquo; He explained it to her.</p>
+<p>&ldquo;That sounds dangerous.&rdquo; She seemed a little
+startled. &ldquo;But it&mdash;it doesn&rsquo;t affect us, does it?&rdquo;</p>
+<p>&ldquo;No&mdash;oo&mdash;not directly,&rdquo; he responded. &ldquo;But
+they are spies, all right! Their message shows
+that. You can&rsquo;t have counter-spies without
+first having spies. If they should chance to
+think that <i>we</i> are the counter-spies, and that
+we&rsquo;re watching them from the steel ball, and&mdash;&rdquo;</p>
+<p>&ldquo;The steel ball! How <i>could</i> we?&rdquo;</p>
+<div class="pb" id="Page_92">[92]</div>
+<p>&ldquo;Well,&rdquo; Johnny replied slowly, &ldquo;perhaps we
+couldn&rsquo;t. That was just a notion. But we <i>could</i>
+be counter-spies.&rdquo;</p>
+<p>&ldquo;But we&rsquo;re not!&rdquo;</p>
+<p>&ldquo;That,&rdquo; he laughed, &ldquo;is what they may not
+know.&rdquo;</p>
+<p>&ldquo;Oh, you and your spies!&rdquo; she exclaimed.
+&ldquo;You&rsquo;re always taking the joy out of life.
+Look at that moon!&rdquo;</p>
+<p>&ldquo;I have been looking at it. Big as a barrel!&rdquo;</p>
+<p>&ldquo;Gorgeous,&rdquo; she agreed. &ldquo;Do you know?&rdquo; she
+stepped over to the rail. &ldquo;I&rsquo;ve been thinking
+of that picture you suggested&mdash;the one painted
+beneath the sea. It would be wonderfully
+colorful&mdash;all those bright, tropical fish, the
+waving water-ferns, the coral, and all that. I&rsquo;m
+going to try it, some time. Only&mdash;&rdquo;</p>
+<p>&ldquo;Only what?&rdquo;</p>
+<p>&ldquo;The sharks.&rdquo;</p>
+<p>&ldquo;They won&rsquo;t trouble you. I&rsquo;ll stay on deck
+and watch. If anything comes after you, I&rsquo;ll
+be right down. Is it a bargain?&rdquo;</p>
+<p>&ldquo;I&rsquo;ll do it.&rdquo; She put out a hand and,
+solemnly, they &ldquo;shook&rdquo; on it.</p>
+<div class="pb" id="Page_93">[93]</div>
+<p>Ten minutes later Johnny was alone with his
+thoughts, and the night. They were long, long
+thoughts. He was working out a theory about
+the messages of the Green Arrow, and the
+whisperings beneath the sea.</p>
+<p>One question brought him up with a start.
+If these people were foreign spies&mdash;why did
+they speak in <i>English</i>? For a time, this was a
+poser. But then the answer came, and he threw
+back his head and laughed! Foreign spies, sent
+to America would be <i>required</i> to speak English!
+If they were keeping in touch with some of
+their own people by short-wave&mdash;<i>of course</i> they
+would speak English! Otherwise, anyone listening-in
+on their messages, would instantly
+suspect them.</p>
+<p>That the messages of the green arrow also
+were in English, was not so easy to explain.
+&ldquo;Perhaps talking and sending messages in
+English, has become force of habit with them,&rdquo;
+he told himself.</p>
+<p>The night was long, too, and he was tired.
+He rejoiced when the first flush of dawn told
+him a new day was here.</p>
+<div class="pb" id="Page_94">[94]</div>
+<p>Dave came on deck early. &ldquo;We&rsquo;ll be getting
+out of here at eight,&rdquo; he said. &ldquo;I guess you
+know that I&rsquo;m taking Mildred down below,
+today. It&rsquo;ll be interesting to see how a girl
+reacts to all that strange environment. She
+seems a bit timid. But she asked for it. So&mdash;&rdquo;</p>
+<p>&ldquo;There&rsquo;s someone <i>I&rsquo;d</i> like to take down,&rdquo;
+Johnny said, suddenly.</p>
+<p>&ldquo;Who?&rdquo; Dave questioned.</p>
+<p>&ldquo;Old Samatan.&rdquo;</p>
+<p>&ldquo;In the name of goodness!&rdquo; Dave exclaimed.
+&ldquo;Why?&rdquo;</p>
+<p>&ldquo;He acts very queer about that steel ball&mdash;looks
+as if he&rsquo;d like to bite a chunk out of it,
+and I don&rsquo;t understand it.&rdquo;</p>
+<p>Johnny hesitated. &ldquo;Perhaps if someone took
+him down, it would clear up some mistaken
+notions in his queer old head. He seems to
+have a lot of influence with the other natives.
+If anything should happen&mdash;&rdquo;</p>
+<p>&ldquo;Nothing will happen.&rdquo; Dave broke in. &ldquo;This
+is the quietest place in the world.&rdquo;</p>
+<p>&ldquo;Do you think so?&rdquo; Johnny asked, with a
+little smile.</p>
+<div class="pb" id="Page_95">[95]</div>
+<p>Dave nodded, absently. &ldquo;But if you&rsquo;d like to
+take Samatan down,&rdquo; he added, &ldquo;it&rsquo;s O.K.
+with me. Be a grand experience for the old
+fellow. He&rsquo;d never get over telling about it.&rdquo;</p>
+<p>&ldquo;Soon?&rdquo; asked Johnny.</p>
+<p>&ldquo;Any time you like,&rdquo; was the answer.</p>
+<p>Thanking Dave, Johnny ambled off to his
+berth for a long and dreamless sleep.</p>
+<div class="pb" id="Page_96">[96]</div>
+<h2 id="c8"><span class="small">CHAPTER VIII</span>
+<br />MONSTER OF THE DEEP</h2>
+<p>Morning came and, for Mildred&mdash;the
+ride in that steel ball.</p>
+<p>Never in all her life had she been so
+thrilled, and so frightened. Curled up inside
+the sturdy metal sphere, she went down&mdash;down&mdash;down,
+into the mysterious depths of the
+ocean. The light from the quartz window
+seemed bright blue, yet she experienced trouble
+in distinguishing small objects within the ball.</p>
+<p>The creatures outside the window were
+strange beyond belief. Here a great school of
+blue fish shot past. There a six-foot monster
+with waving tail sped on in swift pursuit of
+smaller fry. And a group of small, dark,
+crab-like creatures wriggled their way across
+the scene. A little farther from the window
+loomed a dark wall. She shuddered at sight of
+this. All too vividly she recalled Johnny&rsquo;s account
+of their harrowing experience on that
+other day.</p>
+<div class="pb" id="Page_97">[97]</div>
+<p>At Johnny&rsquo;s first suggestion that she accompany
+Dave on this sub-sea journey, her
+impulse had been to say quite definitely&mdash;&ldquo;No!
+I won&rsquo;t go!&rdquo;</p>
+<p>But she had not said it. She just must have
+Dave&rsquo;s help in finding their schooner. So&mdash;she
+continued to shudder as they went down&mdash;down&mdash;down.</p>
+<p>Dave was at her side, saying never a word.
+Staring at the passing scene, now throwing on
+a powerful light, now switching it off again,
+he appeared to have forgotten she was there.</p>
+<p>It was to be a very short trip, perhaps only
+half an hour. They were to make an attempt
+to capture some fantastic sort of creature.
+Mildred was thinking of this now, wondering
+in a vague sort of way, how the capture was
+to be made. Then suddenly, her thoughts were
+interrupted. Her heart skipped a beat as Dave
+exclaimed:</p>
+<p>&ldquo;Man! Oh, man!&rdquo;</p>
+<div class="pb" id="Page_98">[98]</div>
+<p>The steel ball was now close to the wall. For
+the moment, at a command from Dave, it had
+ceased dropping. Suddenly from a crevice in
+the wall there glided a form resembling a
+great golden serpent from a fairy tale.</p>
+<p>&ldquo;Zowie!&rdquo; Dave chuckled, &ldquo;he sure looks
+dangerous&mdash;but he&rsquo;s not. A golden-tailed serpent
+dragon,&rdquo; he explained. &ldquo;They&rsquo;re quite
+rare.</p>
+<p>&ldquo;Now,&rdquo; he spoke into his microphone,
+&ldquo;slowly downward.&rdquo;</p>
+<p>Once more the rocky ledge appeared to glide
+upward.</p>
+<p>&ldquo;Should be there soon,&rdquo; Dave murmured.
+&ldquo;Only hope the old boy is at home. He
+probably is. But we may miss him. It&rsquo;s hard
+to get the right location.&rdquo;</p>
+<p>For Dave this brief expedition had one
+purpose&mdash;to capture the immense, sea-green octopus
+he had seen on a previous trip. As they
+continued to sink into the depths, his eyes remained
+fixed on that wall. Then of a sudden
+he exclaimed:</p>
+<p>&ldquo;There! There he is!&rdquo;</p>
+<div class="pb" id="Page_99">[99]</div>
+<p>Adjusting his microphone he said:</p>
+<p>&ldquo;Doris, we are here. Stop the cable drum.&rdquo;</p>
+<p>The ball ceased to sink. For a full moment
+Mildred saw only a dark cavern in the wall.
+Then suddenly she was startled to discover
+two large eyes staring out at her.</p>
+<p>A moment more and a long arm came wavering
+toward them.</p>
+<p>&ldquo;Doris,&rdquo; said Dave. His voice was steady.
+&ldquo;Have them swing us out a bit. Ten feet may
+do.&rdquo; Then, seconds later, he said: &ldquo;There.
+That&rsquo;s it.&rdquo;</p>
+<p>He began working at something close beside
+him. As Mildred watched the dark cavern she
+saw an arm reach out, then another. For a
+time these appeared to wave aimlessly. Then
+they took direction. To her astonishment she
+saw that a steel rod had swung outward
+toward the octopus from the bottom of the
+ball. At the end of this arm were steel clamps,
+and in the clamps she saw a dead lobster. The
+terrifying tentacles of the octopus, appearing
+fully twenty feet long, were moving toward
+the lobster.</p>
+<div class="pb" id="Page_100">[100]</div>
+<p>&ldquo;The octopus feeds on shell fish&mdash;crabs and
+lobsters,&rdquo; Dave explained briefly.</p>
+<p>&ldquo;Now,&rdquo; he breathed, as one long arm encircled
+the steel clamps. &ldquo;Now&mdash;I wonder what
+luck.&rdquo; Once again he worked at levers and
+small handscrews at his side. The clamp out
+there in the water half opened, then closed
+again. This was repeated twice. Then:</p>
+<p>&ldquo;Ah! Got him!&rdquo; Dave&rsquo;s voice rose exultantly.
+Into the phone he whispered, &ldquo;Doris.
+Out a little&mdash;and then up, at top speed!&rdquo;</p>
+<p>To her astonishment Mildred saw a great
+mass of twisting arms emerge from the cavern.
+One by one these arms wound themselves about
+the steel ball. One of these, a great
+scaly affair with little suckers on its underside,
+crossed the window. With a little cry of
+dismay she shrank back.</p>
+<p>&ldquo;He can&rsquo;t get to you,&rdquo; Dave laughed. &ldquo;Even
+if he could, he&rsquo;d be harmless enough, unless he
+drew you beneath the water and drowned you.</p>
+<div class="pb" id="Page_101">[101]</div>
+<p>&ldquo;You see,&rdquo; he added, &ldquo;while the octopus was
+working to get that lobster, I opened the
+clamps. His arm slipped in, and I closed them.
+Now he&rsquo;s making himself comfortable for the
+ride. It will be a longer ride than you might
+suppose&mdash;all the way to the New York aquarium!
+And boy! Will he be something to look
+at! Largest ever captured, I&rsquo;m sure&mdash;and sea-green
+at that. This being a naturalist is the
+berries, when things are right. All you have
+to do&mdash;</p>
+<p>&ldquo;Hello!&rdquo; he exclaimed. &ldquo;Here we are at the
+top, already. Now for some work.&rdquo;</p>
+<p>Before making any attempt to get the big-eyed
+octopus into the ship&rsquo;s pool for live specimens,
+Dave assisted Mildred from the ball.
+When she climbed forth, she felt a cold chill
+course down her spine. Those great, scaly arms
+were not a foot from her head. But they did
+not move.</p>
+<p>&ldquo;Good boy, Dave!&rdquo; the professor exclaimed
+half an hour later, as they watched the octopus
+surveying his prison tank in the <i>Sea
+Nymph&rsquo;s</i> hold. &ldquo;That is a real prize! A few
+finds like that and we will have more than
+paid our way.</p>
+<div class="pb" id="Page_102">[102]</div>
+<p>&ldquo;I like to think,&rdquo; he added, quietly, &ldquo;that we
+are truly serving the millions of people whose
+only chance to see rare creatures of land or
+sea is in the zoos and aquariums.&rdquo;</p>
+<p>&ldquo;I am sure it <i>is</i> a great service,&rdquo; Mildred
+exclaimed. &ldquo;But professor! What spooky waters
+those are down there!&rdquo;</p>
+<p>&ldquo;Yes, they are spooky,&rdquo; the professor agreed.
+&ldquo;But today, I take it, they were not whispering?&rdquo;</p>
+<p>&ldquo;No,&rdquo; the girl agreed. &ldquo;The whisperer seems
+to have vanished.&rdquo;</p>
+<p>&ldquo;These little undersea journeys always make
+me hungry,&rdquo; said Dave. &ldquo;Come on Mildred&mdash;let&rsquo;s
+have a cup of tea.&rdquo;</p>
+<p>Seated under a colored umbrella on deck,
+they sipped their tea in silence. Mildred was
+thinking&mdash;&ldquo;I wonder if this is the time to ask
+him?&rdquo;</p>
+<p>It was Dave who at last broke the silence.</p>
+<p>&ldquo;Well, Mildred,&rdquo; he said, &ldquo;you behaved very
+well for the first time down. I was wondering&mdash;&rdquo;</p>
+<p>&ldquo;If a girl could take it,&rdquo; she smiled.
+&ldquo;Down here we just have to&mdash;all the time.&rdquo;</p>
+<div class="pb" id="Page_103">[103]</div>
+<p>&ldquo;How so?&rdquo; he asked in surprise. &ldquo;In what
+way?&rdquo;</p>
+<p>&ldquo;Well, only a few days ago grandfather lost
+his motorboat. It&rsquo;s somewhere at the bottom
+of the sea, but not far down. I wasn&rsquo;t on
+board when it sank. And now,&rdquo; she hesitated,
+&ldquo;now fresh dangers appear to threaten us, and
+we have no boat either for trading or&mdash;or for
+escape!&rdquo;</p>
+<p>&ldquo;Escape? Escape from what?&rdquo; Dave ejaculated.</p>
+<p>&ldquo;Well, we might have to escape, you see.&rdquo;
+Mildred leaned forward eagerly. Her eyes
+shone. &ldquo;Grandfather always has opposed those
+men&mdash;spies, really&mdash;who are trying to get all
+the islanders under their control. So they hate
+him. Just recently&mdash;&rdquo;</p>
+<p>She went on to tell of the code message
+flashed by the green arrow and of other
+strange and unexplained happenings. &ldquo;Of
+course,&rdquo; she added, &ldquo;nothing has been <i>done</i> yet.
+But you never can tell.&rdquo;</p>
+<div class="pb" id="Page_104">[104]</div>
+<p>&ldquo;And you want me to help you find that
+motorboat of yours, with my steel ball? Am
+I a good guesser?&rdquo;</p>
+<p>&ldquo;You certainly are,&rdquo; the girl replied, frankly.</p>
+<p>&ldquo;And you didn&rsquo;t really want to go down in
+the steel ball&mdash;you were terribly frightened by
+the thought? But you believed it might help,
+so&mdash;&rdquo;</p>
+<p>&ldquo;So I went,&rdquo; she breathed. &ldquo;You don&rsquo;t mind,
+do you?&rdquo;</p>
+<p>&ldquo;Mind?&rdquo; he exploded. &ldquo;I think you are a
+grand, brave, little girl. If you were my sister,&rdquo;&mdash;he
+paused to grin good naturedly.</p>
+<p>Smiling back at him, Mildred felt sure she
+would be aided in her search for her grandfather&rsquo;s
+motorboat. The thought made her very
+happy.</p>
+<div class="pb" id="Page_105">[105]</div>
+<h2 id="c9"><span class="small">CHAPTER IX</span>
+<br />DAVE&rsquo;S ELECTRIC GUN</h2>
+<p>Once again it was night.</p>
+<p>Johnny walked slowly back and forth
+along the narrow deck. There was about him
+on this night a sense of uneasiness, as if some
+unusual thing was about to happen, or possibly
+a whole succession of things, which might
+change the whole course of his life.... That
+very evening he had heard old Samatan making
+a speech to the native crew&mdash;a fiery sort
+of speech, with the men uttering grunts of
+approval every now and then.</p>
+<p>&ldquo;I&rsquo;ll take him down in the steel ball tomorrow,
+if I get the chance,&rdquo; Johnny assured himself.
+&ldquo;That should cool him off!&rdquo;</p>
+<div class="pb" id="Page_106">[106]</div>
+<p>Samatan, however, was not the only cause of
+his uneasiness. There was the sign of the green
+arrow, those singers, and the boat mark on the
+beach&mdash;and Mr. Kennedy&rsquo;s constant talk of
+spies. All these, he felt, were part of a strange
+pattern of events.</p>
+<p>&ldquo;The whole thing may blow up any time,&rdquo;
+he told himself. &ldquo;And then what&mdash;&rdquo; His
+thoughts were interrupted suddenly. He sprang
+forward. He could swear he had seen something
+move near the steel ball.</p>
+<p>&ldquo;No one here now,&rdquo; he murmured, circling
+the ball, slowly. &ldquo;Imagined it, I guess. My
+nerves are jumpy tonight.&rdquo;</p>
+<p>A whole succession of small, dark clouds, high
+in the heavens, had been passing before the
+moon. One moment the deck was white with
+moonlight; the next, it was dark as the deep
+sea.</p>
+<p>Johnny laughed softly, and found it helped
+steady him. Taking another turn &rsquo;round the
+steel ball, he walked past the open top of the
+tank in which the giant, sea-green octopus was
+kept. As he came alongside, there was a sudden
+splash&mdash;as if the creature had thrown out
+a long arm and allowed it to drop. It gave him
+a real start. Suppose the monster reached out
+for him and really made connections.
+Suppose&mdash;</p>
+<div class="pb" id="Page_107">[107]</div>
+<p>There was that darting shadow again. Or was
+it? Just then a big cloud hid the moon.</p>
+<p>&ldquo;It&rsquo;s nothing,&rdquo; he assured himself. &ldquo;Can&rsquo;t
+be. Crew&rsquo;s all asleep. No chance of anyone
+coming on board without being seen. Guess I&rsquo;ll
+have to take a good, long, drink of cold water.&rdquo;</p>
+<p>Going to the stern he obtained his thermos
+bottle, uncorked it and drank.</p>
+<p>Then he dropped into a steamer chair to await
+the reappearance of the moon from behind
+that big, black cloud.</p>
+<p>The cloud still obscured it when, swift as a
+shot, he leapt straight into the air, as from
+the octopus tank came a shrill, hair-raising
+scream of terror.</p>
+<p>&ldquo;Great Jehosophat!&rdquo; he exclaimed as he
+sprinted down the deck.</p>
+<p>One flash of his electric torch showed a hand
+waving wildly above the surface of the water.
+An instant later a head bobbed up. Eyes wild,
+nostrils dilated, the mouth opened in another
+unearthly scream as the victim vanished beneath
+the water, now thoroughly roiled by the
+octopus&rsquo; savage threshing.</p>
+<div class="pb" id="Page_108">[108]</div>
+<p>Long slimy arms appeared&mdash;here, there&mdash;seemingly
+everywhere. Then again, a man&rsquo;s
+head broke the surface.</p>
+<p>But now Johnny was on the steel ladder,
+reaching for the hand that had followed the
+head above water. Seizing it, and wrapping his
+left arm about a rung of the ladder, he pulled
+with all his might. That he was taking his life
+in his hands, he well knew. Those scaly arms
+seemed to be feeling for <i>him</i>. If they reached
+him&mdash;</p>
+<p>All the while, Johnny was thinking, &ldquo;Who
+is this person and how did he get on board?&rdquo;</p>
+<p>Thanks to Johnny&rsquo;s good right arm, the
+man&rsquo;s head remained above the surface. He
+was a swarthy individual, with short-cropped,
+black hair. Spitting out a quantity of water,
+he whispered hoarsely:</p>
+<p>&ldquo;Don&rsquo;t let him! Don&rsquo;t let him pull me back
+under!&rdquo;</p>
+<div class="pb" id="Page_109">[109]</div>
+<p>There came a sudden tug that all but broke
+Johnny&rsquo;s grip on the man&rsquo;s hand. At the same
+time, waving above the disturbed surface of
+the tank, a long, slimy arm seemed to feel for
+the boy on the ladder.</p>
+<p>Then, to Johnny&rsquo;s vast relief, came Dave&rsquo;s
+voice, calling:</p>
+<p>&ldquo;Johnny! Johnny Thompson! Where are
+you?&rdquo;</p>
+<p>&ldquo;Here! Here in the tank! Help&mdash;and <i>hurry</i>!&rdquo;
+Johnny shouted, desperately.</p>
+<p>There came the sound of running feet along
+the deck. At that very instant, a scaly tentacle
+found Johnny&rsquo;s wrist and wrapped itself
+about the two hands, binding them together
+as with a band of steel.</p>
+<p>&ldquo;Wha&mdash;what&rsquo;s happened?&rdquo; Dave threw a
+flash of light on the fantastic scene. His quick
+eye took it all in at a glance. &ldquo;Hang on,
+Johnny! I&mdash;I&rsquo;ll be back in a jiffy!&rdquo; Then he
+was gone.</p>
+<p>The tremendous power of that steady pull
+from the tank, promised to wrench Johnny&rsquo;s
+arm from its socket. The stranger in the pool
+uttered a low groan. Johnny&rsquo;s mind went into
+a tailspin, but he hung on desperately. How
+would this end? Would Dave <i>never</i> arrive?</p>
+<div class="pb" id="Page_110">[110]</div>
+<p>&ldquo;Now!&rdquo; came from above, and Dave was
+back. In one hand he held an automatic, and
+in the other, what appeared to be an iron rod.</p>
+<p>&ldquo;Get ready for an electric shock,&rdquo; he said,
+quietly. &ldquo;I think this will fix him.&rdquo;</p>
+<p>He thrust out the rod until it touched one
+arm of the octopus. Next instant, Johnny felt
+a powerful electric shock that brought his
+muscles up with a jerk. Again, and yet again
+came the shock. Johnny could hear the
+stranger&rsquo;s teeth chatter. Then he saw the fellow&rsquo;s
+other hand. It was free. At the same time
+the scaly thing about his wrist began to relax.</p>
+<p>Giving a powerful pull, he lifted the stranger
+half out of the water. Twenty seconds later
+they both were free, and tumbled, panting, on
+the deck.</p>
+<p>For a full minute Johnny lay motionless.
+When at last he sat up he said to Dave:</p>
+<p>&ldquo;Hang onto that gun. You may need it.&rdquo;</p>
+<p>Turning to the swarthy stranger he demanded:</p>
+<p>&ldquo;What were you doing on this boat?&rdquo;</p>
+<div class="pb" id="Page_111">[111]</div>
+<p>&ldquo;I was just a-passin&rsquo; by, and took a notion
+to climb aboard,&rdquo; the stranger muttered.</p>
+<p>&ldquo;You are lying,&rdquo; said Johnny. &ldquo;You were
+spying into things! Why?&rdquo;</p>
+<p>&ldquo;I wasn&rsquo;t spying! I don&rsquo;t know what you&rsquo;re
+talking about,&rdquo; said the man.</p>
+<p>&ldquo;I don&rsquo;t think he&rsquo;s a spy,&rdquo; said Dave. &ldquo;He&rsquo;s
+just some native.&rdquo;</p>
+<p>&ldquo;Native, my eye!&rdquo; snapped Johnny. He had
+noted the outline of a long knife, showing
+through the fellow&rsquo;s wet garments.</p>
+<p>By this time the native crew was swarming
+up from below, and Doris and the professor
+were standing in the shadows.</p>
+<p>&ldquo;Let the fellow go,&rdquo; Dave whispered to
+Johnny. &ldquo;He&rsquo;s just some native who happened
+by in a dugout, saw our boat and thought he&rsquo;d
+have a look. He might have meant to steal
+something, but you can&rsquo;t prove that. We don&rsquo;t
+want to get these natives excited. They might
+leave us in a body. Then where would we be?&rdquo;</p>
+<p>&ldquo;Oh&mdash;all right,&rdquo; Johnny agreed, reluctantly.
+To the man he said: &ldquo;Come with me.&rdquo;</p>
+<div class="pb" id="Page_112">[112]</div>
+<p>The man&rsquo;s boat was tied to a belaying pin
+up forward. As they walked in that direction,
+Johnny and the intruder were out of sight of
+the others, for a moment.</p>
+<p>&ldquo;I&rsquo;ll just take this to remember you by,&rdquo; said
+Johnny, dragging the man&rsquo;s knife from its
+sheath. &ldquo;If you&rsquo;re a native&mdash;you should carry
+a machete.&rdquo;</p>
+<p>The man favored him with a mocking smile,
+then bolted over the rail into his small boat
+and was gone.</p>
+<p>&ldquo;Well, that&rsquo;s that!&rdquo; said Johnny, as he
+rejoined the others. &ldquo;Here&rsquo;s hoping he doesn&rsquo;t
+come back.&rdquo;</p>
+<p>&ldquo;Johnny,&rdquo; said Dave, &ldquo;I wonder if you
+weren&rsquo;t making a whole lot out of a very
+little.&rdquo;</p>
+<p>&ldquo;Perhaps I was,&rdquo; Johnny answered quietly.
+He saw no point in arguing.</p>
+<p>A moment later he said: &ldquo;Dave&mdash;what was
+that thing you shocked the octopus with?&rdquo;</p>
+<p>&ldquo;That was an electric gun,&rdquo; Dave laughed.
+&ldquo;We use it while we&rsquo;re exploring the sea-bottom
+on foot. If some big fish, like a shark, gets
+too curious&mdash;we touch him and pull the trigger.
+Believe me, they beat it!</p>
+<div class="pb" id="Page_113">[113]</div>
+<p>&ldquo;It&rsquo;s lucky I had it,&rdquo; he added. &ldquo;Otherwise
+I&rsquo;m afraid I should have been obliged to kill
+our prize, and that would have been a great
+loss. By the way, Johnny, how did that fellow
+get into the tank?&rdquo;</p>
+<p>&ldquo;Tumbled in, I suppose. Probably thought
+he was going down into the hold to prowl
+around.&rdquo;</p>
+<p>&ldquo;I wonder why?&rdquo; said Dave.</p>
+<p>But Johnny didn&rsquo;t see fit to discuss the matter
+further.</p>
+<p>After the others had retired again, Johnny
+took the stranger&rsquo;s knife to the light and examined
+it closely. Never had he seen such perfect
+workmanship. The blade was of hand-forged
+steel, with a handle of old ivory. Two
+foreign words were stamped on the blade.
+Johnny could not read them, but he knew very
+well this was no native&rsquo;s knife.</p>
+<p>&ldquo;A spy, beyond a doubt,&rdquo; he muttered.
+&ldquo;Wonder how many there will be tomorrow
+night. Dave must let me have a gun!&rdquo;</p>
+<div class="pb" id="Page_114">[114]</div>
+<p>Just then the moon came out from behind a
+cloud, flooding the deck with white light. What
+a difference that made. All the mystery of the
+night seemed to fade.</p>
+<p>Johnny shrugged his shoulders and continued
+to pace the deck.</p>
+<div class="pb" id="Page_115">[115]</div>
+<h2 id="c10"><span class="small">CHAPTER X</span>
+<br />LITTLE BIG-HEADS</h2>
+<p>Next day Johnny took Samatan for a
+ride in the steel ball. He had supposed
+it would be difficult, if not impossible, to
+induce the dignified old native to accompany
+him, but he was due for a surprise.</p>
+<p>&ldquo;Samatan,&rdquo; he said pleasantly, &ldquo;you know we
+have been making trips far beneath the surface
+of the sea in that steel ball.&rdquo;</p>
+<p>&ldquo;Yes!&rdquo; Suddenly Samatan was alert.</p>
+<p>&ldquo;Dave and I&mdash;we&mdash;well we thought you
+might like to go down.&rdquo;</p>
+<p>&ldquo;In the big ball?&rdquo; The native&rsquo;s eyes shone,
+eagerly.</p>
+<p>&ldquo;Yes, that&rsquo;s right.&rdquo; Johnny answered.</p>
+<p>&ldquo;Today?&rdquo; asked Samatan.</p>
+<p>&ldquo;If you wish.&rdquo;</p>
+<p>&ldquo;In one hour,&rdquo; said Samatan.</p>
+<div class="pb" id="Page_116">[116]</div>
+<p>An hour later, Samatan took his place beside
+Johnny in the steel ball, watched the massive,
+steel cap being screwed into place, felt the bump
+of the ball on the deck, then sensed their drop
+into the sea. All this&mdash;in stoical silence.</p>
+<p>Down they went, a hundred feet&mdash;two hundred&mdash;five
+hundred&mdash;a thousand. By the small
+light at his side, Johnny watched the native&rsquo;s
+face. The expression never changed.</p>
+<p>&ldquo;He seems to be expecting something interesting
+and exciting,&rdquo; the boy told himself.
+&ldquo;Wonder what it could be. If he&rsquo;s afraid, he
+sure doesn&rsquo;t show it.&rdquo;</p>
+<p>As they sank lower and lower, the darkness
+increased. At last, as Johnny threw off the electric
+light and all about them was inky black,
+from the native&rsquo;s lips came a hiss of surprise.
+That was all.</p>
+<p>When Johnny threw on a powerful light, the
+look of expectation on Samatan&rsquo;s face returned.</p>
+<p>&ldquo;Strange sort of person,&rdquo; the boy thought.
+&ldquo;What can he be expecting to see?&rdquo;</p>
+<div class="pb" id="Page_117">[117]</div>
+<p>They were now standing still. The professor
+on deck, had decided their descent had gone
+far enough.</p>
+<p>As Johnny sat staring into the inky blackness
+before them, he gave a sudden start, then
+snatched his camera. There, plainly in view,
+was one of the strangest monsters he ever had
+seen.</p>
+<p>Scarcely had he adjusted his camera for a
+picture, than a second creature appeared.</p>
+<p>&ldquo;Must be a school of them.&rdquo; His hand trembled
+a little.</p>
+<p>Just as the camera clicked there began the
+most amazing and terrifying experience of
+Johnny&rsquo;s eventful life. As though pushed by
+a giant hand, as a child pushes a playmate in
+a rope swing, the steel ball moved rapidly outward
+and upward&mdash;although Johnny had given
+no signal!</p>
+<p>Outward and upward&mdash;one hundred&mdash;two
+hundred&mdash;three hundred feet. Who could say
+how far? What mysterious power motivated
+this wild ride, and where would it end?
+Would the cable snap?</p>
+<div class="pb" id="Page_118">[118]</div>
+<p>Johnny made no effort to conceal the horror
+reflected in his face by this thought. Sealed in
+a steel ball, resting on the bottom of the sea,
+half a mile or more below surface. What
+chance? The boy&rsquo;s lips moved, but no sound
+came. Then, by sheer will power, he adopted
+a calmer mood and waited the turn of events.</p>
+<p>Samatan neither moved nor spoke. Strange
+Samatan! Did he think this was part of the
+show? And what had he been waiting so
+patiently to see?</p>
+<p>There was even greater consternation on
+board the <i>Sea Nymph</i>.</p>
+<p>Dave had gone ashore for a bit of dry-land
+exploring but, with Doris at his side, the professor
+stood watching the pumps that sent air
+to the occupants of the steel ball. His gaze,
+reflecting serious concern, was focused intently
+on the gauge registering strain on the steel
+ball&rsquo;s cables.</p>
+<p>&ldquo;Doris!&rdquo; he exclaimed excitedly. &ldquo;Look,
+Doris! <i>Look! The strain has doubled!</i> The cable
+is perilously near the breaking point!&rdquo;</p>
+<p>&ldquo;Poor Johnny!&rdquo; Doris cried, distractedly.
+&ldquo;Down there with old Samatan! If the cable
+breaks&mdash;&rdquo;</p>
+<div class="pb" id="Page_119">[119]</div>
+<p>&ldquo;If the cable breaks&mdash;no power on earth can
+save them!&rdquo; The professor&rsquo;s voice dropped.
+&ldquo;The bottom must be a full mile down and I
+doubt whether the ball could withstand the
+terrific pressure. Nor is there any way we
+could bring it to the surface!&rdquo;</p>
+<p>&ldquo;What can be done?&rdquo; Doris was wringing her
+hands.</p>
+<p>&ldquo;Pray!&rdquo; was the professor&rsquo;s simple reply.
+&ldquo;Strange things are accomplished by prayer,
+and faith.&rdquo;</p>
+<p>Doris <i>did</i> pray. Then they waited in silence.
+Ten seconds ticked their way into eternity.
+Twenty&mdash;thirty&mdash;sixty. The arrow of the
+gauge moved nearer the &ldquo;maximum strain&rdquo;
+point at the top of the dial&mdash;and stood still.
+Then, for a brief second, it moved forward
+again.</p>
+<p>&ldquo;The cable! It can never stand the torsion!&rdquo;
+the professor groaned.</p>
+<p>Just as all seemed lost, the arrow quivered&mdash;and
+began, slowly, to move the other way.</p>
+<p>&ldquo;Thank God!&rdquo; exclaimed the professor, fervently.
+&ldquo;It&mdash;it&rsquo;s going down, Doris, child.&rdquo;</p>
+<div class="pb" id="Page_120">[120]</div>
+<p>Staring at the dial, Doris opened her lips in
+silent thanksgiving. She could only stand and
+stare.</p>
+<p>What had happened?</p>
+<p>That was a question that remained unanswered
+for weeks. Some tremendous power behind
+the steel ball had pushed it away and up,
+until its certain doom seemed inevitable.</p>
+<p>Then, with a sudden, rolling lurch, the ball
+had been freed and at once began sinking to
+its original position. Fortunately, the resistance
+of the water was so great, there was no danger
+that the stopping of the descent would snap
+the cable.</p>
+<p>As they reached bottom position, Johnny
+grabbed Samatan&rsquo;s hand and gripped it, impulsively.</p>
+<p>Then it was that the native said a strange
+thing:</p>
+<p>&ldquo;You go bottom now?&rdquo; he asked, hopefully.</p>
+<p>&ldquo;No,&rdquo; said Johnny, happily. &ldquo;But we are <i>safe</i>,
+man! I&rsquo;m signalling them to draw us up!&rdquo;</p>
+<p>&ldquo;No go bottom?&rdquo; There was a suggestion of
+disappointment in Samatan&rsquo;s voice.</p>
+<div class="pb" id="Page_121">[121]</div>
+<p>Suddenly Johnny thought he understood.
+Samatan had expected to see bottom. That was
+what he had wanted, and it explained his
+strange eagerness to go down. But <i>why</i>? What
+did he expect to see there?</p>
+<p>Johnny, however, was far too eagerly awaiting
+the first, faint gleam of light as they rose,
+to think much more about Samatan&rsquo;s behavior.</p>
+<p>The strange &ldquo;dawn beneath the sea&rdquo; came to
+him once again. Such a glorious dawn! He was
+to live on! What a privilege it became, suddenly,
+just to live! The ball rose free of the
+water, to swing about and bump gently down
+to the deck. A few moments later, the professor
+and Doris were gripping his hands and demanding
+to know what had happened.</p>
+<p>&ldquo;What in the world went wrong?&rdquo; they
+asked, in chorus.</p>
+<p>&ldquo;We ran into a school of monsters.&rdquo; Johnny
+was now able to laugh at his predicament.
+&ldquo;They must have taken us for a ride, I guess!&rdquo;</p>
+<p>&ldquo;What kind of monsters?&rdquo; The professor was
+so serious his voice trembled.</p>
+<div class="pb" id="Page_122">[122]</div>
+<p>&ldquo;You won&rsquo;t believe me if I tell you,&rdquo; the
+boy replied, soberly, &ldquo;but here goes. They had
+heads twice as large as their bodies! And those
+heads! If only their mouths had been a little
+larger, they might have swallowed our steel
+ball at one gulp!&rdquo;</p>
+<p>&ldquo;Did they have a small lower jaw and a large
+upper one? Were their eyes set well back on
+the side of their heads? Did their tails wave
+like those of some tropical fish?&rdquo; The professor
+was growing excited.</p>
+<p>&ldquo;Yes, yes, and yes,&rdquo; Johnny laughed again.
+&ldquo;But say&mdash;I tried to take pictures of them!
+Wonder if they could have been good! Wait
+till I get my camera.&rdquo; He made a dive into the
+steel ball to reappear at once with the camera.</p>
+<p>&ldquo;But Johnny!&rdquo; Doris insisted, &ldquo;you haven&rsquo;t
+told us what really happened?&rdquo;</p>
+<p>&ldquo;I don&rsquo;t know, and that&rsquo;s a fact!&rdquo; replied
+Johnny, quietly, soberly. &ldquo;I was just taking
+pictures of those beasts when&mdash;&rdquo;</p>
+<div class="pb" id="Page_123">[123]</div>
+<p>&ldquo;They&rsquo;re known as little big-heads,&rdquo; the professor
+broke in, &ldquo;and they are rare, indeed!
+You are the first person ever to see them alive.
+Two specimens have been found washed up
+on coral beaches, dead. You are a truly great
+explorer, Johnny! You may now take a bow.&rdquo;</p>
+<p>&ldquo;Aw, say!&rdquo; Johnny fairly blushed.</p>
+<p>&ldquo;Anyway,&rdquo; he insisted, &ldquo;one of them must
+have become tangled in our cable, and in his
+wild efforts to free himself, took us for an
+underseas joyride!&rdquo;</p>
+<p>&ldquo;That doesn&rsquo;t seem possible,&rdquo; mused the professor,
+slowly. &ldquo;I should like to know what
+really happened.&rdquo;</p>
+<p>&ldquo;So should I!&rdquo; Johnny agreed. &ldquo;All I have
+to say is&mdash;I&rsquo;d like them to stay clear of our
+cable, in the future! Please look at my hair!
+Do you think it will turn white?&rdquo;</p>
+<p>&ldquo;In thirty or forty years,&rdquo; Doris laughed.
+&ldquo;But Johnny&mdash;we&rsquo;re dying to see those pictures.&rdquo;</p>
+<p>&ldquo;Yes, yes!&mdash;by all means!&rdquo; the professor
+agreed. &ldquo;Let us see them at once.&rdquo; So they
+crowded into Johnny&rsquo;s small darkroom to
+watch the enthralling &ldquo;coming out&rdquo; of one
+more set of plates.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>&ldquo;Little big-heads,&rdquo; the professor whispered
+solemnly, as the pictures began to appear.
+&ldquo;Johnny, you are a wonder! Once again we
+have registered a real triumph!&rdquo;</p>
+<div class="pb" id="Page_124">[124]</div>
+<p>&ldquo;I&rsquo;m glad of that,&rdquo; Johnny said, sincerely.
+&ldquo;I like being a success. But even better&mdash;I
+enjoy living!</p>
+<p>&ldquo;I&rsquo;m sure I&rsquo;ll not be able to sleep in the
+dark for months to come,&rdquo; he said, more lightly.
+&ldquo;I&rsquo;ll be imagining I&rsquo;m still in that steel
+ball, swinging wide in utter darkness!&rdquo;</p>
+<p>&ldquo;Johnny,&rdquo; Doris whispered some time later,
+&ldquo;What <i>really</i> took you for that ride?&rdquo;</p>
+<p>&ldquo;I could only guess&mdash;and it would be a wild
+guess, at that!&rdquo; There was a suggestion of
+mystery in his voice. &ldquo;I&rsquo;m sure of one thing,
+though. It wasn&rsquo;t any little big-head!&rdquo;</p>
+<div class="pb" id="Page_125">[125]</div>
+<h2 id="c11"><span class="small">CHAPTER XI</span>
+<br />TIGERS OF THE SEA</h2>
+<p>Doris, standing on the ocean&rsquo;s floor
+forty feet down, started back in sudden
+terror, and her foot struck a rock. She all but
+fell over. On the beach she would have taken
+a terrible tumble.</p>
+<p>&ldquo;It was just a shadow,&rdquo; she told herself.
+&ldquo;Only a shadow moving beyond that great
+rock. A blue shadow. Grandfather said I&rsquo;d be
+in no danger, and he should know.&rdquo;</p>
+<p>Involuntarily she put a hand over her wildly
+beating heart, then smiled at her action and
+at once felt better.</p>
+<p>&ldquo;I must finish,&rdquo; she told herself, stoutly, as
+she resumed her task.</p>
+<div class="pb" id="Page_126">[126]</div>
+<p>She was painting a picture. The circumstances
+under which she worked were strange,
+almost beyond belief. When Johnny had suggested
+an underseas picture, she had been
+truly thrilled. But she had shuddered and said,
+&ldquo;No!&mdash;I&rsquo;d never dare do that!&rdquo;</p>
+<p>But&mdash;given one glimpse of the setting for
+such a picture, she had become greatly excited.
+&ldquo;Such colors! Such contrasts! Yes&mdash;I surely
+must paint it!&rdquo; she had exclaimed.</p>
+<p>The task now was well begun. She was wearing
+tennis shoes and standing on sand. Before
+her a great anchor, red with rust, leaned
+against a huge boulder. Beside the anchor was
+a copper-bound chest. One might easily have
+imagined that this chest contained Spanish
+treasure&mdash;gold, diamonds, rubies. But it was
+empty, as Doris already had discovered.</p>
+<p>The gray rock that supported the anchor
+was festooned with vegetation of rare hues&mdash;red,
+orange, pink, yellow, and deep dark blue,
+mingled in profusion. In and out among these
+plants darted small creatures which might almost
+have been birds. The girl was wearing a
+great brass helmet which hid her face. She was
+looking through glass, at a world unbelievably
+strange and beautiful.</p>
+<div class="pb" id="Page_127">[127]</div>
+<p>Above her, its shadow looming darkly, lay
+the <i>Sea Nymph</i>. Descending from the boat was
+a long tube that supplied her with air. A constant
+trickle of bubbles escaped from beneath
+her helmet. Her easel was weighted down, and
+her canvas specially treated to resist water.
+Her brushes and colors were the same she had
+used on the sunny, tropical shores.</p>
+<p>But the scene! How she thrilled to it! And
+she was painting it as truly and exactly as
+she could. Perhaps thousands who never had
+been beneath the surface of the water would
+look at this picture and wonder at its coloring.</p>
+<p>Thrilled at the thought, she painted more
+industriously than ever, forgetting entirely the
+blue shadow. She had searched long for a spot
+that would make the most interesting picture.
+She had wandered, fascinated, until she had
+chanced upon this anchor and strong box, lost
+so long before.</p>
+<p>It was indeed wonderful. With a background
+of ivory and pink coral, purple plumes of seaweed,
+fringes of lace-like anemone, in a framework
+of water-washed rocks&mdash;it made a scene
+not soon to be forgotten.</p>
+<div class="pb" id="Page_128">[128]</div>
+<p>So here she was, painting rapidly&mdash;though
+far back in her mind was the memory of that
+blue shadow behind the rock....</p>
+<p>The scene was forever changing. A cloud
+passing over the sun, dimmed the colors. Then
+a large school of small fish, darting forward
+at a furious rate, completely shut off her view.</p>
+<p>But now! &ldquo;Ah, now!&rdquo; she thought, joyously.</p>
+<p>A dozen tropical fish, the brightest and best
+she ever had seen, came to play about the
+ancient chest and &ldquo;pose&rdquo; for their pictures.
+With quick, deft touches she painted them in&mdash;two,
+staring large-eyed at the anchor&mdash;three,
+peering into the ancient chest, and three just
+&ldquo;resting&rdquo;.</p>
+<p>But what was this?</p>
+<p>Like a flock of birds that have caught sight
+of a circling hawk, the tropical fish darted
+swiftly away. Had they caught a glimpse of
+a dangerous foe, gliding from behind the rock?
+The girl thought so, and shuddered. She even
+fancied she had caught its color again&mdash;dark
+blue. But of this she could not be sure. Down
+here all was so strange.</p>
+<div class="pb" id="Page_129">[129]</div>
+<p>&ldquo;A villain,&rdquo; she murmured to herself with
+a low laugh. &ldquo;The final touch to a gorgeous
+setting.&rdquo;</p>
+<p>To quiet her shaky nerves she gave herself
+more intensively to completion of her task.</p>
+<p>&ldquo;There is no danger,&rdquo; she assured herself
+again. &ldquo;Grandfather says there is absolutely
+none&mdash;and he has spent days on end on the
+ocean&rsquo;s floor.&rdquo;</p>
+<p>She recalled his very words: &ldquo;Oh, yes, there
+are sharks in these waters&mdash;but they won&rsquo;t
+harm you. If they should get curious and come
+too close&mdash;poke them with your stick! I&rsquo;ve done
+that more than once.&rdquo;</p>
+<p>Scarcely had she gone over these reassuring
+words when something startled her, anew. A
+dark shadow appeared suddenly at her right.
+She took one look, then laughed. &ldquo;It&rsquo;s only
+a fish,&rdquo; she thought.</p>
+<p>Brushing away two tiny fish that had
+managed to get themselves stuck to her canvas,
+she began giving her work its final
+touches.</p>
+<div class="pb" id="Page_130">[130]</div>
+<p>For ten full minutes she worked feverishly.
+&ldquo;My time is almost up,&rdquo; she was thinking.
+&ldquo;They will be giving me the signal. Then up
+I&rsquo;ll go. But I do so want&mdash;&rdquo;</p>
+<p>Her thoughts were suddenly arrested. What
+was that? She had felt the motion of water
+against her body. &ldquo;As if something passed&mdash;fast!&rdquo;
+she thought with a little shudder.
+Turning slowly about, she peered through the
+window of her brass helmet.</p>
+<p>&ldquo;Nothing,&rdquo; she whispered. &ldquo;Nothing but three
+long, gray fish, over there. But what of that?
+I&mdash;I&rsquo;ll give my signal rope a pull,&rdquo; she told
+herself. &ldquo;Just a minute more and I&rsquo;ll do it.&rdquo;</p>
+<p>The minute stretched to two, three, four.
+And then it happened. One of the long, gray
+fish flashed like a streak of doom, straight
+for the hand that held the paint brush. Missing
+by inches, it collided with the easel, knocked
+it to the sea floor and shot away in sudden
+flight.</p>
+<div class="pb" id="Page_131">[131]</div>
+<p>The fish could not have been more frightened
+than the girl. Suddenly she recalled wild
+tales told by the natives about the vicious barracuda&mdash;&ldquo;Tiger
+of the Sea.&rdquo; ... A woman had
+dabbled a finger in the water&mdash;and one of these
+fish snapped it off.... Swimmers had lost
+toes.... She felt paralyzed with fear.</p>
+<p>Then, like an act in some strange drama,
+a pair of dangling legs appeared between her
+and the gray terrors. The legs were followed
+swiftly by a body, a brass helmeted head and
+two hands, holding a sharp-pointed spear.</p>
+<p>The spear shot out!</p>
+<p>The gray terrors, like arrows from a bow,
+flashed out of sight. It seemed to Doris that
+no creatures ever had moved so rapidly beneath
+the surface of the sea.</p>
+<p>She watched the &ldquo;apparition&rdquo; in a helmet&mdash;which
+she knew to be Johnny&mdash;take up her
+easel and set it in position. She noted,
+vaguely, that the picture had landed right side
+up and was not harmed. Then Johnny turned
+and held out his hand.</p>
+<p>She expected to be taken straight up to the
+ship&rsquo;s deck. Instead, he led her a distance of
+a hundred feet along the bottom. Then they
+came to an abrupt halt, and Johnny pointed
+straight down.</p>
+<div class="pb" id="Page_132">[132]</div>
+<p>She looked&mdash;and involuntarily stepped back.
+They were standing on the very brink of a
+yawning, watery precipice. Far down as one
+could see was only blue-black depth. It was
+an awe-inspiring sight.</p>
+<p>As if to add to her amazement, she saw&mdash;perhaps
+a hundred feet down&mdash;some large,
+dark hulk. It was dim and indistinct as a
+shadow, yet very real, as it moved slowly
+along the cliff, to disappear in the blue-black
+of the apparently bottomless ocean.</p>
+<p>This had not been part of the planned show,
+she knew at once from her guide&rsquo;s actions. He
+moved his arm, pointing excitedly.</p>
+<p>A moment longer they stood there, looking
+down. Then came the signal to come up. The
+picture and paints were attached to the easel,
+and a cord drew them up. All Doris had to
+do was to give a little spring, and up, up, she
+rose, to the glorious sunshine of a tropical day.</p>
+<p>A quarter of an hour later, she and Johnny
+were seated on the deck, laughing at one another
+and scarcely knowing why.</p>
+<div class="pb" id="Page_133">[133]</div>
+<p>Dave and the professor had gone ashore to
+study tropical bird life, so after the evening
+meal, Johnny and Doris sat on deck watching
+the play of phosphorescent creatures beneath
+the surface of the sea.</p>
+<p>&ldquo;This,&rdquo; said Johnny, &ldquo;is my day off. Tonight
+I sleep. Tomorrow old Samatan and I
+are going for a sail in a large dugout, to visit
+some coral reefs.&rdquo;</p>
+<p>Doris smoothed back her thick, golden hair,
+fixed her bright blue eyes on him, and said:
+&ldquo;Why?&rdquo;</p>
+<p>&ldquo;We need him for a friend,&rdquo; Johnny replied,
+quietly. &ldquo;If <i>he</i> is with us&mdash;all the native crew
+will be, too. He&rsquo;s a leader.&rdquo;</p>
+<p>&ldquo;You talk,&rdquo; said Doris, &ldquo;as if there were to
+be war!&rdquo;</p>
+<p>&ldquo;Who knows?&rdquo; Johnny did not laugh. &ldquo;Perhaps
+there will be, but not just yet. There
+are spies with us now!&rdquo;</p>
+<p>&ldquo;How do you know?&rdquo; She leaned forward in
+her chair.</p>
+<div class="pb" id="Page_134">[134]</div>
+<p>&ldquo;That man I caught on board the other
+night, was a spy. Look!&rdquo; He held up the exquisitely
+wrought knife. &ldquo;Do you think a native
+would have such a gem of a knife? Not
+a chance!</p>
+<p>&ldquo;Then&mdash;there&rsquo;s the green arrow to prove he&rsquo;s
+a spy!&rdquo; Johnny went on. &ldquo;One of the messages
+I spelled out by using their code read: &lsquo;<i>Board
+them. Discover all you can.</i>&rsquo;&rdquo;</p>
+<p>&ldquo;But why?&rdquo; said Doris. &ldquo;We&rsquo;re not secret
+agents.&rdquo;</p>
+<p>&ldquo;That&rsquo;s what <i>they don&rsquo;t know</i>! We are Americans&mdash;and
+they don&rsquo;t want us around.&rdquo;</p>
+<p>&ldquo;Know what?&rdquo; Johnny continued, &ldquo;I believe
+that big thing that glides through the water&mdash;the
+thing we saw today&mdash;is a submarine!&rdquo;</p>
+<p>&ldquo;It can&rsquo;t be!&rdquo;</p>
+<p>&ldquo;Why not?&rdquo;</p>
+<p>&ldquo;Well, if it is&mdash;it must be an American submarine!&rdquo;</p>
+<p>Johnny looked at her for a moment in silence.</p>
+<div class="pb" id="Page_135">[135]</div>
+<p>&ldquo;It&rsquo;s not an American submarine,&rdquo; he said,
+after a time. &ldquo;I&rsquo;ve seen them, and this one&rsquo;s
+the wrong shape. It&rsquo;s some spy submarine,
+looking over the bottom of the sea and getting
+information for the next war. I shouldn&rsquo;t be
+surprised if a large part of that war were
+fought right in this Caribbean Sea!</p>
+<p>&ldquo;What&rsquo;s more,&rdquo;&mdash;he rose to his feet&mdash;&ldquo;I&rsquo;ll
+bet a dollar that the thing that took Samatan
+and me for a ride in the steel ball, <i>was that
+same submarine</i>!&rdquo;</p>
+<p>&ldquo;Trouble with you,&rdquo; Doris laughed merrily,
+&ldquo;is too much imagination.&rdquo;</p>
+<p>&ldquo;You just wait and see,&rdquo; Johnny replied with
+a smile.</p>
+<p>The sound of oars at this moment, announced
+the return of Dave and the professor
+from their day&rsquo;s explorations.</p>
+<div class="pb" id="Page_136">[136]</div>
+<h2 id="c12"><span class="small">CHAPTER XII</span>
+<br />JOHNNY&rsquo;S DAY OFF</h2>
+<p>Next morning Johnny and old Samatan
+sailed away toward the smiling face of
+the rising sun.</p>
+<p>&ldquo;This is a grand dugout you&rsquo;ve got!&rdquo;
+Johnny enthused.</p>
+<p>Smiling, Samatan pulled a line, giving the
+boat full sail. She tilted sharply. Boy and man
+settled back against the pull of the sail and
+sped along before the wind.</p>
+<p>Johnny&rsquo;s eyes took in the whole of the trim
+little craft, and he smiled, contentedly.</p>
+<p>It was indeed a great little dugout. Not so
+small, either. Fully twenty feet long and six
+feet wide, it had been hewn from a solid mahogany
+log. The boy tried to estimate the number
+of days of hard, careful work that would
+have required, but gave it up.</p>
+<div class="pb" id="Page_137">[137]</div>
+<p>The inside surface was polished to the last
+degree, and the seats were braided, cocoanut
+fibre. On the prow, carved in the most perfect
+manner, was the wooden image of a
+seagull.</p>
+<p>All unknown to Johnny, Samatan was keeping
+an eye on him. His keen old mind read
+the boy&rsquo;s thought like a book. One lover of a
+sailboat recognizes another, and since his tenth
+birthday, Johnny had been an ardent sailboat
+enthusiast. At that age he had rigged up a
+square sail for a rowboat and had known
+many happy hours on the water. The fact that
+he had once capsized and barely escaped
+drowning, had not in the least dampened his
+ardor.</p>
+<p>&ldquo;We go coral reef. Catchem turtles for stew,&rdquo;
+Samatan said at last.</p>
+<p>&ldquo;How do you catch them?&rdquo; Johnny asked.</p>
+<p>&ldquo;Samatan show you.&rdquo;</p>
+<p>After that there was silence.</p>
+<div class="pb" id="Page_138">[138]</div>
+<p>It became evident that Samatan was an expert
+with a sail. The breeze picked up and the
+sea became choppy, but the smiling old man,
+eyes squinting, lay back at ease. Pulling first
+at one rope, then another, he held the small
+craft on her course.</p>
+<p>Johnny laughed right out loud when at last
+the old man took off his soft, loose shoes,
+gripped the ropes with his toes and began
+steering with his feet.</p>
+<p>Two delightful hours passed. Then the dugout
+slid up on a sandy shore.</p>
+<p>When the boat had been pulled up, Samatan&rsquo;s
+eyes scanned the sandy beach. Suddenly
+he went racing away and, with the silence and
+speed of a great cat, stole up on an unsuspecting
+turtle, basking in the sand. A quick leap&mdash;and
+the turtle lay on its back, a prisoner.</p>
+<p>&ldquo;Food,&rdquo; said the old man. &ldquo;Much food from
+the sea. But,&rdquo; he added quietly, &ldquo;we take only
+what we need.&rdquo;</p>
+<p>When all the turtles needed had been stowed
+away in the boat, they went for a walk on
+the beach. They made a strange picture, this
+bright-faced American boy and the old, brown
+native whose face was wrinkled by many tropical
+suns.</p>
+<div class="pb" id="Page_139">[139]</div>
+<p>Seldom had Johnny spent a more interesting
+or exciting morning. They hung a heavy
+cord over a rocky ledge to snare a sea-crab,
+turned over a Hawk&rsquo;s-bill turtle, whose shell
+was worth eight dollars a pound, and chased
+a monkey up a cocoanut tree.</p>
+<p>They had wandered for two hours and were
+far from the boat when, for no apparent reason,
+Samatan uttered a low exclamation. Then
+he faced squarely toward the ridge, which at
+this place rose some twenty feet above the
+beach.</p>
+<p>&ldquo;Huh!&rdquo; he grunted. &ldquo;We see!&rdquo;</p>
+<p>He dashed away at surprising speed, up the
+hill. Tripping over vines and blundering into a
+bramble bush, Johnny followed.</p>
+<p>When at last he caught up with the agile
+old man, Samatan was standing motionless,
+looking off at the sea. For a full minute, lips
+parted, eyes staring, they stood there in
+silence.</p>
+<p>For&mdash;stealing up on them like an enemy in
+the night, a terrific storm was racing in from
+the sea. It took but one word from Samatan&rsquo;s
+lips to complete the terror of the prospect.</p>
+<div class="pb" id="Page_140">[140]</div>
+<p>&ldquo;Hurricane!&rdquo; he said, gutterally.</p>
+<p>&ldquo;We must run for the boat!&rdquo; Johnny sprang
+down from the rock.</p>
+<p>&ldquo;Not go now. Too late!&rdquo; Samatan did not
+move. Instead, he stood looking along the
+ridge, first this way, then that.</p>
+<p>&ldquo;The <i>Sea Nymph</i>!&rdquo; Johnny broke out again.
+&ldquo;She will be lost!&rdquo;</p>
+<p>&ldquo;Not get lost,&rdquo; Samatan said, slowly. &ldquo;Good
+crew. Harbor not far.&rdquo; Once again his eyes
+swept the ridge.</p>
+<p>&ldquo;Come,&rdquo; he said at last. &ldquo;This way. We go
+fast.&rdquo; Even as he spoke, a gust of wind sweeping
+in from the sea, all but threw the boy off
+his rocky perch.</p>
+<p>For ten minutes or more the two of them
+fought their way along the ridge. At last
+the native paused. &ldquo;Here,&rdquo; he said, &ldquo;is most
+high. Trees. Must climb these&mdash;quick! Waves
+go all over coral reef!&rdquo;</p>
+<p>&ldquo;Al&mdash;all right.&rdquo; The rising gale blew Johnny&rsquo;s
+words down his throat. Seizing the low
+branches of a large tree, he prepared to climb.</p>
+<div class="pb" id="Page_141">[141]</div>
+<p>&ldquo;No! That bad tree! No good!&rdquo; said Samatan.
+&ldquo;This one.&rdquo;</p>
+<p>Into Johnny&rsquo;s mind at that moment came
+the words of the professor: &ldquo;When I am in a
+strange land I do what a native will do&mdash;go
+where he goes. If he says &lsquo;No go&rsquo;&mdash;I stay.&rdquo;</p>
+<p>So, without further questioning, the boy began
+to climb Samatan&rsquo;s tree.</p>
+<p>The tree was short and sturdy. Soon they
+were perched like crows on two limbs close
+together. And in silence they watched the onrushing
+storm. The sky was black. It was like
+night. Scarcely could the boy see his companion.
+Trembling with excitement, he decided to
+force his thoughts from the impending hurricane.</p>
+<p>&ldquo;Samatan,&rdquo; he said, &ldquo;there was something
+about our steel ball you did not like.&rdquo;</p>
+<p>&ldquo;Yes,&rdquo; came the instant reply. &ldquo;Professor&mdash;he
+is good man. Very good. But one thing must
+not do. He must not!&rdquo;</p>
+<p>&ldquo;He is going to tell me,&rdquo; Johnny thought,
+with quickening pulse.</p>
+<div class="pb" id="Page_142">[142]</div>
+<p>But at that moment there came such a roar
+as would drown the strongest voice, and onto
+the beach came the rush of a great sea. Something
+like a tidal wave had struck the narrow
+reef.</p>
+<p>&ldquo;I must hang on,&rdquo; the boy thought. The next
+instant he was engulfed in stinging salt water.
+The sea had swept over the land.</p>
+<p>Though Johnny felt that he was being swallowed
+by the sea, it was in reality only the
+froth and foam of the monster wave that
+reached him. One instant he was gasping for
+breath, the next, he was looking down on a
+madly whirling world.</p>
+<p>The thought that struck him first, with the
+force of a blow, was&mdash;&ldquo;the tree I meant to
+climb is gone! Swept away by the sea!&rdquo;</p>
+<p>It was true. The tree, rotten at the roots,
+had vanished. Samatan had saved his life, and
+a new sense of respect for the aged native
+swept over Johnny. With it came the conviction
+that whatever it was the old native
+wanted from the professor, it must be right
+for him to have it. And something seemed to
+assure Johnny that he would hear the story
+without asking.</p>
+<div class="pb" id="Page_143">[143]</div>
+<p>But at that moment, to talk at all was impossible.
+The shrieking of the wind, the cracking
+of branches, the roar of thunder and the
+mad tumult of the sea, were completely deafening.
+Johnny wondered how long it would
+last? Would greater waves come? Would he and
+Samatan at last be swept into the sea? To all
+these questions he found no answer.</p>
+<p>In an effort to forget the terror of the situation
+he made himself think once more of
+the great steel ball and his adventures beneath
+the sea....</p>
+<p>In the meantime his companions on the <i>Sea
+Nymph</i> were witnessing a feat such as even
+the gray-haired captain never had seen
+equaled. Watching the storm, yet fearing for
+the safety of Johnny and Samatan and hoping
+against hope that they might return, they on
+the yacht had delayed lifting anchor.</p>
+<p>When at last they headed toward the narrow
+entrance of a natural harbor, the wind tore
+their sails to ribbons, while waves, mountain-high,
+swept them toward a rocky wall.</p>
+<div class="pb" id="Page_144">[144]</div>
+<p>In despair, the captain trusted the fate of
+his ship to the native crew. Nor did he trust
+in vain. With a few yards of sail at their command
+the natives, in the midst of dashing
+spray, clung to spar and masthead, turning the
+graceful craft this way and that. Then&mdash;at
+precisely the right instant&mdash;they seemed to lift
+her from the sea and send her shooting through
+a channel so narrow it seemed the paint would
+be scraped from her two sides at once. They
+sent her gliding smoothly to safety, in a harbor
+as calm as a millpond.</p>
+<p>&ldquo;Bravo!&rdquo; shouted the captain.</p>
+<p>&ldquo;Glorious!&rdquo; the professor cried. &ldquo;Never saw
+such sailing! Those men deserve all praise!&rdquo;</p>
+<p>Six long hours the storm roared on, and for
+six endless hours Johnny clung to his tree.
+Though the sea, like some menacing monster,
+appeared to thrust out long, white arms to
+grasp him, he remained safely with Samatan,
+in the tree top. At last, sweeping high overhead,
+the storm-clouds raced away&mdash;to leave
+a kindly, golden moon looking down on the
+boy and the old man.</p>
+<div class="pb" id="Page_145">[145]</div>
+<p>&ldquo;Come,&rdquo; said Samatan, climbing gingerly
+down from his perch. &ldquo;We go back.&rdquo;</p>
+<p>&ldquo;Back to what?&rdquo; Johnny&rsquo;s lips framed the
+words he dared not speak.</p>
+<p>Their trail back over the moonlit beach was
+strange beyond belief. They climbed over a
+huge old palm tree, lying on the ground,
+stumbled on a giant, loggerhead turtle, killed
+in the storm, and slipped on jellyfish left high
+on the ridge.</p>
+<p>As they rounded a bend in the beach, a large
+object loomed before them, white and ghostly
+in the night.</p>
+<p>&ldquo;Boat,&rdquo; said Samatan.</p>
+<p>&ldquo;Lifeboat,&rdquo; the boy amended as they came
+closer.</p>
+<p>Examining it closely he read the words:
+&ldquo;S. S. Vulture&rdquo;. Bashed in at the prow, the
+boat lay empty, upside down. What was its
+story? Had the Vulture been wrecked? Had
+part of her crew put to sea in this boat, only
+to perish?</p>
+<p>With a shudder, Johnny pushed on behind
+his tireless guide.</p>
+<div class="pb" id="Page_146">[146]</div>
+<p>&ldquo;Our boat must be gone,&rdquo; he ventured at
+last.</p>
+<p>Samatan made no reply.</p>
+<p>More fallen palms, tangled sea moss,
+jellyfish, a dead crocodile, a mile of sand, and
+then&mdash;Johnny rubbed his eyes. He opened
+them to look again.</p>
+<p>&ldquo;Our boat!&rdquo; he exclaimed.</p>
+<p>&ldquo;Yes,&rdquo; Samatan said.</p>
+<p>It was true. The boat was safe. Piled with
+seaweed and half-buried in sand, it remained
+where they had left it.</p>
+<p>A brief examination redoubled the boy&rsquo;s admiration
+for the aged native. The dugout had
+been chained to a stout, palm stump. Even
+the sail was lashed beneath the seat. Samatan
+had taken all these precautions before there
+was any sign of a storm. Wise old Samatan!</p>
+<p>In awed silence Johnny helped to clear the
+sand and seaweed away.</p>
+<p>&ldquo;Now we go,&rdquo; said Samatan, preparing to
+launch the boat.</p>
+<div class="pb" id="Page_147">[147]</div>
+<p>If Johnny had admired Samatan&rsquo;s sailing before,
+his admiration was doubled now. Up&mdash;up&mdash;up
+they glided, until they seemed ready
+to touch the stars, then down&mdash;down, far into
+the trough of a wave.</p>
+<p>&ldquo;Samatan.&rdquo; Johnny spoke without thinking.
+&ldquo;Why do you hate our steel ball?&rdquo;</p>
+<p>&ldquo;Hate? Ball?&rdquo; Samatan struggled for the
+right word. &ldquo;Good man, professor. But must
+not steal natives&rsquo; gold!&rdquo;</p>
+<p>&ldquo;Gold?&rdquo; Johnny ejaculated. &ldquo;I don&rsquo;t understand.&rdquo;</p>
+<p>The tale the old man told, then, out there
+on the racing sea, was fantastic indeed. Yet
+Johnny doubted never a word of it....</p>
+<p>The islands now belonging to Samatan&rsquo;s native
+people once had been a French colony.
+The French had made slaves of the natives,
+and had brought in many more slaves. Then
+the slaves revolted and drove all the Frenchmen
+from the islands.</p>
+<p>&ldquo;After that&mdash;<i>our</i> land!&rdquo; Samatan declared
+proudly. &ldquo;Long time republic. Long time
+everybody happy. Then,&rdquo; his voice dropped,
+&ldquo;how you say it&mdash;came bad man. Very hard
+man. Very cruel. Make people work too hard.
+Want gold. All gold. By and by want kill that
+man, my people.</p>
+<div class="pb" id="Page_148">[148]</div>
+<p>&ldquo;This bad man see strange men come&mdash;many
+men.&rdquo; Samatan continued. &ldquo;They put
+gold in chest&mdash;much gold&mdash;and dump in sea.</p>
+<p>&ldquo;Now,&rdquo; Samatan sighed, &ldquo;bad man dead.
+Gold lost. Never find that gold, my people.
+Belong my people&mdash;that gold! Find gold&mdash;my
+people pay debts. Very happy. But now,&rdquo; he
+frowned, &ldquo;Professor, he hunt gold with steel
+ball. Wanna keep that gold, you think, that
+professor?&rdquo;</p>
+<p>&ldquo;Oh, no! No!&rdquo; Johnny laughed. &ldquo;The professor
+is not looking for treasure! Only
+strange fishes, all sorts of odd creatures that
+live beneath the sea.&rdquo;</p>
+<p>&ldquo;Not wanna find gold?&rdquo; The old man was
+plainly puzzled.</p>
+<p>&ldquo;Oh, sure&mdash;I s&rsquo;pose he&rsquo;d <i>like</i> to find it,&rdquo;
+Johnny laughed. &ldquo;And&mdash;we&rsquo;ll really try to&mdash;now
+that we know about it. But if we <i>do</i> find
+it, you may be sure it will all be for your
+people&mdash;to the last doubloon!&rdquo;</p>
+<div class="pb" id="Page_149">[149]</div>
+<p>&ldquo;Good boy, Johnny.&rdquo; The old man smiled
+broadly. &ldquo;Good man, Professor. All good.
+Everybody!&rdquo;</p>
+<p>&ldquo;I see a light,&rdquo; said Johnny. &ldquo;That must be
+Kennedy&rsquo;s place.&rdquo;</p>
+<p>&ldquo;Right, Kennedy.&rdquo; said Samatan. &ldquo;By and
+by we come that place.&rdquo;</p>
+<p>&ldquo;That,&rdquo; said Johnny, &ldquo;will be swell!&rdquo; Then
+his brow wrinkled. Where, he wondered, was
+the <i>Sea Nymph</i>? Did it make harbor safely?
+He sighed as he reflected that soon he would
+know the answer&mdash;for better or worse!</p>
+<div class="pb" id="Page_150">[150]</div>
+<h2 id="c13"><span class="small">CHAPTER XIII</span>
+<br />THE GREEN ARROW TRAIL</h2>
+<p>While Johnny was going through his
+wild adventure, Doris and Dave were
+not without their own exciting moments. Of
+course while the storm lasted, the professor&rsquo;s
+party remained inside the <i>Sea Nymph&rsquo;s</i> cabin.
+As soon as it abated they immediately went
+ashore.</p>
+<p>Troubled as they were at thought of
+Johnny&rsquo;s possible fate, there was for the moment
+nothing they could do. The seas were still
+running high. Dave and the professor went for
+a tramp in the jungle, while Doris followed the
+trail to the Kennedy home.</p>
+<p>Mildred appeared greatly worried when told
+of the journey Johnny and Samatan had
+undertaken.</p>
+<div class="pb" id="Page_151">[151]</div>
+<p>&ldquo;But why did Johnny go?&rdquo; she asked in
+surprise.</p>
+<p>&ldquo;Oh,&rdquo; replied Doris, &ldquo;he had a notion that
+Samatan was angry about something. He said
+we might need the help of Samatan and his
+men.&rdquo;</p>
+<p>&ldquo;How?&rdquo; Mildred asked.</p>
+<p>&ldquo;That&rsquo;s it&mdash;how?&rdquo; Doris laughed uneasily.
+&ldquo;He thinks there are many European spies
+around here!&rdquo;</p>
+<p>&ldquo;Well&mdash;there are!&rdquo; Mildred nodded her head
+vigorously.</p>
+<p>&ldquo;You, too?&rdquo; exclaimed Doris. &ldquo;But anyhow,
+Johnny thinks the spies believe <i>we</i> are looking
+for <i>them</i>&mdash;and that they&rsquo;d do something terrible
+to us.&rdquo;</p>
+<p>&ldquo;I shouldn&rsquo;t wonder,&rdquo; said Mildred.</p>
+<p>&ldquo;How comforting you are!&rdquo; Doris smiled ruefully.
+&ldquo;Just when I want to feel quiet in my
+mind! You aren&rsquo;t helping a bit!&rdquo;</p>
+<p>&ldquo;Well,&rdquo; said Mildred, &ldquo;how can I? There
+were those men singing in some foreign
+tongue. They just vanished! And there&rsquo;s that
+mysterious, blinking green arrow.&rdquo;</p>
+<div class="pb" id="Page_152">[152]</div>
+<p>&ldquo;Two of them,&rdquo; Doris corrected. &ldquo;One on
+land and one on sea&mdash;like Paul Revere!&rdquo; she
+chuckled mischievously.</p>
+<p>&ldquo;But of course,&rdquo; she added more seriously,
+&ldquo;there was the man who came on board our
+boat, sneaking around, and went into a huddle
+with the octopus! That would have been
+funny had it not been so terrible. He had a
+knife that Johnny says no native would carry.
+But I don&rsquo;t see&mdash;&rdquo;</p>
+<p>&ldquo;There are a lot of things we don&rsquo;t see!&rdquo;
+Mildred broke in. &ldquo;For instance&mdash;who was that
+whisperer who was always breaking in when
+Dave and Johnny in the steel ball were being
+dragged against the rocks?&rdquo;</p>
+<p>&ldquo;He might have been a thousand miles
+away. Radio&rsquo;s like that,&rdquo; Doris said, doubtfully.</p>
+<p>&ldquo;Yes-and he might not!&rdquo; Mildred exclaimed.
+&ldquo;He appeared to know too much
+for that.&rdquo;</p>
+<p>&ldquo;One more thing,&rdquo; Doris laughed. &ldquo;Johnny
+thinks there is a submarine&mdash;a foreign one&mdash;in
+these waters!&mdash;He thinks we saw it, and
+that <i>it</i> was the thing that dragged the steel
+ball, that day!&rdquo;</p>
+<div class="pb" id="Page_153">[153]</div>
+<p>&ldquo;I shouldn&rsquo;t wonder a bit,&rdquo; said Mildred.</p>
+<p>&ldquo;Oh, bother your &lsquo;shouldn&rsquo;t wonder&rsquo;!&rdquo; exclaimed
+Doris, good naturedly. &ldquo;Come on, let&rsquo;s
+take a walk. It will be good for our nerves!</p>
+<p>&ldquo;But I&rsquo;ll tell you one thing,&rdquo; she added as
+they started off. &ldquo;If I believed <i>half</i> the things
+you do&mdash;I&rsquo;d be getting out of here!&rdquo;</p>
+<p>&ldquo;It&rsquo;s not so easy,&rdquo; Mildred replied, soberly.
+&ldquo;Grandfather is a dear. It would be a shame
+to leave him alone. Of course he says he&rsquo;s
+going to send me back to college in the fall,
+and I suppose I shall go. College means so
+much these days.&rdquo;</p>
+<p>&ldquo;Yes,&rdquo; Doris agreed, &ldquo;I&rsquo;m sure it does.&rdquo;</p>
+<p>&ldquo;But he can&rsquo;t do that unless we get our motorboat
+up from the bottom,&rdquo; said Mildred.
+&ldquo;And even after that&mdash;there are the spies.&rdquo;</p>
+<p>&ldquo;Spies! Always spies!&rdquo; Doris laughed. &ldquo;Let&rsquo;s
+forget them!&rdquo;</p>
+<p>&ldquo;O.K. Let&rsquo;s do,&rdquo; the other girl agreed.</p>
+<div class="pb" id="Page_154">[154]</div>
+<p>The trail they had chosen led to the beach
+where the mysterious male chorus had disappeared.
+Arrived at the beach where the waves
+were now racing, they stood for a time in silence.
+When a piece of driftwood&mdash;the broken
+side of a native dugout&mdash;came floating in,
+Mildred turned away with a shudder, her
+thoughts on Johnny.</p>
+<p>Having wandered into the jungle a short distance
+she stopped suddenly to stare at the
+trunk of a tree. There, standing out against
+the smooth gray bark, was a small, green
+arrow!</p>
+<p>&ldquo;Doris!&rdquo; she called. &ldquo;Come here!&rdquo;</p>
+<p>&ldquo;Green arrow!&rdquo; Doris exclaimed, reaching
+Mildred&rsquo;s side. &ldquo;What do you suppose it
+means?&rdquo; she whispered.</p>
+<p>&ldquo;It&rsquo;s a trail marker!&rdquo; said Mildred. &ldquo;There
+should be others. Come on!&rdquo;</p>
+<p>There were others! Some were quite far up
+on the trees, while others were low. They continued
+the search for ten minutes, steadily
+finding others.</p>
+<p>Doris was frightened and did not wish to
+go on. At every turn of the trail she expected
+to come upon a freshly made clearing, a cluster
+of tents and a whole army of strange warriors.</p>
+<div class="pb" id="Page_155">[155]</div>
+<p>But Mildred thought of but one thing....
+Perhaps they were on the road to a real discovery.</p>
+<p>As they went deeper and deeper into the
+jungle, the green arrows became scarcer, and
+harder to find. The trail grew steeper and
+narrower. Thorny bushes tore at them, and
+once a great snake crossed their path. Unused
+to all this, Doris was distinctly uneasy. But
+Mildred&rsquo;s face fairly shone.</p>
+<p>However, when they came to a place where
+the trail split into three narrower ones and,
+search as they might, they could not find a
+single arrow, Mildred, too, was ready to
+give up.</p>
+<p>&ldquo;Come on,&rdquo; said Doris. &ldquo;It will soon be
+dark, and I must get back to the boat. They
+may want to put out, in search of Johnny and
+Samatan.&rdquo;</p>
+<p>&ldquo;You&rsquo;re right,&rdquo; said Mildred. &ldquo;We must be
+starting back. But&mdash;I&rsquo;m coming back here
+again!&rdquo;</p>
+<p>&ldquo;Alone?&rdquo; Doris stared.</p>
+<p>&ldquo;Perhaps.&rdquo;</p>
+<div class="pb" id="Page_156">[156]</div>
+<p>The journey back to the Kennedy home was
+made in silence.</p>
+<p>By the time the girls had eaten their evening
+meal it was completely dark. Wandering
+down to the beach they listened to the diminishing
+roar of the sea, and watched its
+strange blackness against the moon&rsquo;s golden
+light.</p>
+<p>&ldquo;There&rsquo;s a light!&rdquo; Doris exclaimed.</p>
+<p>&ldquo;Yes, sir! And it blinks!&rdquo; Mildred became
+excited.</p>
+<p>After watching for a full minute, she suddenly
+threw her arms around her companion
+to exclaim: &ldquo;Oh! Doris! That&rsquo;s Johnny! It is&mdash;it
+surely is! Sometimes he blinks his light from
+the ship that way&mdash;one, two, three&mdash;one, two,
+three! Oh, it&rsquo;s wonderful! Aren&rsquo;t you glad?&rdquo;</p>
+<p>&ldquo;Of course I&rsquo;m glad,&rdquo; said Doris. &ldquo;But
+then&mdash;men always do manage to get back one
+way or another, don&rsquo;t they?&rdquo;</p>
+<p>&ldquo;Oh! Oh, no!&rdquo; Mildred caught her words.
+&ldquo;They don&rsquo;t&mdash;nowhere near &lsquo;always&rsquo;.&rdquo;</p>
+<p>Just then Dave and the professor came down
+to the beach.</p>
+<div class="pb" id="Page_157">[157]</div>
+<p>&ldquo;We think it&rsquo;s Johnny and Samatan,&rdquo; Doris
+said quietly.</p>
+<p>&ldquo;Good!&rdquo; said the professor. &ldquo;That lifts a
+load from my shoulders!&rdquo; He turned to speak
+to Mildred, but she had gone.</p>
+<p>Ten minutes later, natives caught the dugout
+and hauled it far up on the sandy beach.</p>
+<p>After receiving the congratulations of his
+shipmates, Johnny began flashing his light into
+the surrounding darkness, searching for
+Mildred. At last the beam came to rest on a
+charming picture&mdash;a girl with reddish-golden
+hair, wearing a dress of golden material, tied
+at the waist with a broad red sash. All this&mdash;against
+the greenish blackness of a jungle
+night.</p>
+<p>&ldquo;Why!&rdquo; Johnny exclaimed, as he caught her
+hand. &ldquo;The little beach-comber has turned into
+a golden fairy!&rdquo;</p>
+<p>&ldquo;P&mdash;please, Johnny!&rdquo; Mildred stuttered confusedly,
+&ldquo;I&mdash;I just wanted to&mdash;celebrate your
+return from the d&mdash;dead!&rdquo;</p>
+<div class="pb" id="Page_158">[158]</div>
+<p>&ldquo;Nonsense!&rdquo; exclaimed Johnny. &ldquo;I always
+come back. But it was mighty nice of you,
+anyhow, and I won&rsquo;t forget!&rdquo;</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>He was ready for a good, long sleep. His task
+of watching was given over for the night to
+Samatan&rsquo;s son, who was a member of the native
+crew. So Johnny did not return to the
+boat, but was shown to the guest room of the
+Kennedy cottage where, under a mosquito-bar
+canopy, with the tropical moon shining
+through the bamboo lattice, he slept the sleep
+of the just.</p>
+<p>By the next afternoon both he and Mildred
+were ready for further adventure. Together,
+they tramped into the jungle.</p>
+<p>&ldquo;If we find more green arrows,&rdquo; said
+Mildred, fairly tingling with excitement,
+&ldquo;where do you think the trail will lead us?&rdquo;</p>
+<p>&ldquo;Hard to tell,&rdquo; said Johnny. &ldquo;It might take
+us right to the spot from which the green arrow
+of light shines out in the night.&rdquo;</p>
+<p>&ldquo;And then?&rdquo; she whispered.</p>
+<p>&ldquo;No can tell!&rdquo; laughed Johnny. &ldquo;We&rsquo;ll answer
+that when the time comes.&rdquo;</p>
+<div class="pb" id="Page_159">[159]</div>
+<p>But would they? And what would the answer be?</p>
+<p>After hours of searching they decided that,
+whatever the answer might be, the finding of
+it must be postponed for another day. Beyond
+the spot where the trail forked, they could not
+proceed.</p>
+<p>&ldquo;There&rsquo;s something queer about these signs
+of the green arrow,&rdquo; said Johnny, dropping
+onto a cushion of moss in the shade. &ldquo;There
+is something we don&rsquo;t know about it all.&rdquo;</p>
+<p>&ldquo;Yes,&rdquo; replied the girl, &ldquo;and we&rsquo;re going to
+find out what it is!&rdquo;</p>
+<p>&ldquo;But not today,&rdquo; said Johnny. &ldquo;The shadows
+already are growing long.&rdquo;</p>
+<p>By the time they reached the beach from
+which the singing band had so mysteriously
+disappeared, the abrupt, tropical darkness had
+fallen. For a moment they stood looking at
+the dark, mysterious sea. Suddenly Mildred
+gripped Johnny&rsquo;s arm and whispered:</p>
+<p>&ldquo;Look! The green arrow!&rdquo;</p>
+<p>True enough. Seeming but a stone&rsquo;s throw
+from shore, the green arrow appeared to rise
+from the sea.</p>
+<div class="pb" id="Page_160">[160]</div>
+<p>&ldquo;It <i>must</i> be on a submarine!&rdquo; Mildred whispered.</p>
+<p>&ldquo;Wait! They&rsquo;re signalling.&rdquo; Johnny dragged
+pencil and paper from his pocket and began
+scribbling numbers. This continued for two
+minutes. Then, as suddenly as it had appeared,
+the green arrow vanished.</p>
+<p>&ldquo;Gone!&rdquo; the girl exclaimed.</p>
+<p>&ldquo;Come on,&rdquo; said Johnny. &ldquo;I want to see what
+they were saying.&rdquo;</p>
+<p>Leading the way to a dark hollow where
+their light could not be seen, he asked her to
+hold the electric torch while he deciphered the
+message.</p>
+<p>&ldquo;&lsquo;<i>We will strike</i>,&rsquo;&rdquo; he read aloud, &ldquo;&lsquo;<i>at the
+earliest possible moment!</i>&rsquo;</p>
+<p>&ldquo;That&rsquo;s all.&rdquo; He stood up. &ldquo;Spies strike in
+the dark&mdash;and without warning. I wonder
+what we have ahead of us!&rdquo;</p>
+<div class="pb" id="Page_161">[161]</div>
+<h2 id="c14"><span class="small">CHAPTER XIV</span>
+<br />AN IMPORTANT DISCOVERY</h2>
+<p>That night as he tramped the deck on
+his silent watch, Johnny found his mind
+crowded with disturbing thoughts of the significant
+message the green arrow had flashed
+over the sea.</p>
+<p>&ldquo;<i>We will strike</i>&mdash;&rdquo; his mind went over the
+words again and again, &ldquo;<i>at the earliest possible
+moment!</i>&rdquo; Where would they strike? And who
+was to receive the blow? His shipmates on
+the <i>Sea Nymph</i>? Old Kennedy and his daughter?
+Or someone he never had seen?</p>
+<p>&ldquo;I may never know,&rdquo; he told himself. &ldquo;Spies
+strike in the dark.&rdquo;</p>
+<div class="pb" id="Page_162">[162]</div>
+<p>Johnny had read that during the World War,
+spies had swum to the propellers of outgoing
+ships laden with men and supplies. Hours later,
+with the ship far out at sea, a bomb had exploded,
+blowing away the propeller and leaving
+the ship helpless. He knew, too, that spies had
+placed incendiary bombs in the holds of ships,
+and dumped quantities of acid in the very bottom
+of a vessel, to eat its way through the
+steel.</p>
+<p>&ldquo;Yes,&rdquo; he thought, &ldquo;and even now&mdash;in times
+of supposed peace&mdash;they are boring in!&rdquo;</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>The <i>Sea Nymph</i> left the river and put out
+to sea while Johnny slept. When he awoke in
+mid-afternoon, they were anchored in their old
+position.</p>
+<p>&ldquo;How would you like to make a solo journey
+in the steel ball?&rdquo; Dave asked when he came
+on deck.</p>
+<p>&ldquo;Go&mdash;go down alone?&rdquo; Johnny asked, feeling
+a bit strange. &ldquo;That&mdash;oh, that&rsquo;s O.K., I guess.&rdquo;</p>
+<p>&ldquo;I was down this morning,&rdquo; said Dave, &ldquo;and
+my eyes are tired. There are some pictures I&rsquo;d
+like to have. Conditions below are all right,
+and there&rsquo;s an off-shore breeze. We&rsquo;ve two
+lines out to windward, which should hold her
+steady.</p>
+<div class="pb" id="Page_163">[163]</div>
+<p>&ldquo;What the professor would like,&rdquo; he went on
+in a businesslike tone, &ldquo;is to have you go down,
+slowly, along that submerged cliff, stopping
+every ten feet to take a photo floodlight picture.
+That will give us a continued story of
+plant and animal life, down to perhaps two
+thousand feet.&rdquo;</p>
+<p>&ldquo;Al&mdash;all right,&rdquo; Johnny agreed. &ldquo;I can do
+that.&rdquo; But for the life of him he could not
+still his heart&rsquo;s wild beating. He seemed to be
+hearing a voice say:</p>
+<p>&ldquo;<i>We will strike&mdash;at the earliest possible moment!</i>&rdquo;</p>
+<p>He forced his lips to repeat: &ldquo;Two thousand
+feet, you say?&rdquo;</p>
+<p>&ldquo;About that. Better get ready at once. The
+wind may pick up.&rdquo;</p>
+<p>&ldquo;Yes, it may stri&mdash;pick up,&rdquo; Johnny agreed
+a little absently.</p>
+<div class="pb" id="Page_164">[164]</div>
+<p>Twenty minutes later, inside the steel ball
+and busy taking pictures of the wall as he
+stopped each ten feet, he had all but banished
+thoughts of the green arrow from his mind.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>But someone else really was seeing green arrows&mdash;and
+plenty of them. That was the granddaughter
+of old Mr. Kennedy&mdash;the man who
+for twenty years had defied encroachments of
+foreign interests in this happy little republic.
+For Mildred had gone on a hunting expedition
+all her own. She was hunting spies. She had
+started once more over the green arrow trail
+and, strangely enough, almost instantly had
+discovered the secret of its markings.</p>
+<p>During their months together she and her
+grandfather had spent hours on end, tramping
+the jungle, and he had taught her to know all
+the usual signs. The trail of some great snake
+in the sand&mdash;the uprooted earth, where little
+wild pigs had been&mdash;the marks of a monkey&rsquo;s
+claws on the green sprouts of a tree&mdash;all had
+a meaning for her.</p>
+<div class="pb" id="Page_165">[165]</div>
+<p>Knowing these usual signs, she had looked
+for unusual ones&mdash;and had found them. On
+reaching the spot where they had lost the trail
+on two other occasions, she noted that the next
+to the last arrow was low down, while the <i>last</i>,
+was some ten feet higher. So&mdash;to reach this last
+marking place&mdash;someone had been obliged to
+climb! In doing this, bits of bark had been
+broken off, leaving fresh, light-brown spots on
+the tree trunks.</p>
+<p>&ldquo;Now I shall look for broken bark&mdash;not arrows,&rdquo;
+she told herself.</p>
+<p>She had not gone forward a hundred paces
+on the right hand fork of the trail, when she
+let out a cry of surprise and joy. Not only
+had she discovered broken bark, but up, perhaps
+thirty feet on a tree, she saw a green
+arrow.</p>
+<p>&ldquo;One, two, three,&rdquo; she whispered. &ldquo;Perhaps
+that&rsquo;s the way it goes. One arrow down low,
+one a little higher, and a third, well up on
+the trunk!&rdquo;</p>
+<p>She discovered at once that this was just
+the way the markings ran. So immediately she
+took up the trail again.</p>
+<p>The distance from the shore of the island
+to the summit of the tallest hill, was considerable.
+The trail, such as it was, made only
+by natives and wild animals, wound round and
+round&mdash;up and up.</p>
+<div class="pb" id="Page_166">[166]</div>
+<p>The girl followed this trail for more than an
+hour. Then she sat down on a fallen mahogany
+tree to think. She was far from all her
+friends. Should she go farther? She, too, recalled
+the last message of the green arrow of
+light&mdash;about &ldquo;striking&rdquo;!</p>
+<p>&ldquo;Perhaps I can stop them,&rdquo; she whispered
+stoutly, as she rose to her feet. &ldquo;At least I
+can try!&rdquo;</p>
+<p>Though her knees trembled, she did not
+falter, but marched straight on. For was she
+not the granddaughter of old Kennedy&mdash;hero
+of a hundred battles?</p>
+<div class="pb" id="Page_167">[167]</div>
+<h2 id="c15"><span class="small">CHAPTER XV</span>
+<br />ADRIFT IN THE DEPTHS</h2>
+<p>All went well with Johnny on his undersea
+photographing trip until he had
+reached the fifteen-hundred-foot level. Then he
+called in his loud-speaker to Doris, who was
+directing the controls:</p>
+<p>&ldquo;Sorry, Doris. On that last, ten-foot shot,
+I made a double exposure. Hike me up a bit,
+will you, please?&rdquo;</p>
+<p>&ldquo;O.K. Johnny,&rdquo; was the answer. To the men
+at the hoist she said: &ldquo;Up ten feet.&rdquo;</p>
+<p>&ldquo;Up ten feet,&rdquo; the men repeated.</p>
+<p>Johnny waited for the rise. His floodlight
+was on. Some strange creatures with amazing
+teeth, were passing, and he snapped his
+camera.</p>
+<div class="pb" id="Page_168">[168]</div>
+<p>&ldquo;Interesting place, down here,&rdquo; he thought.
+&ldquo;Hate to stay down here all night, though.&rdquo;
+His leg felt cramped. He tried to shift to a
+new position, but at last gave it up. &ldquo;No sort
+of place for an active person,&rdquo; he sighed.
+&ldquo;Wonder why I don&rsquo;t go up a bit&mdash;I&rsquo;d like to
+get this over!&rdquo;</p>
+<p>&ldquo;Hey, up there!&rdquo; he called into the phone.
+&ldquo;What&rsquo;s wrong?&rdquo;</p>
+<p>&ldquo;Sorry, Johnny,&rdquo; Doris drawled. &ldquo;Something&rsquo;s
+wrong with the hoist. It won&rsquo;t work.
+But they&rsquo;ll get it fixed pretty soon, I guess!&rdquo;</p>
+<p>Something wrong with the hoist! Johnny experienced
+a cold chill. Suppose someone had
+been tampering with that hoist&mdash;had done
+something really serious? What then? You
+couldn&rsquo;t take hold of a fifteen-hundred-foot
+steel cable with a two-ton ball at the end of
+it, and haul it by hand like a fishline.
+Johnny realized all too keenly that his life
+depended on that hoist.</p>
+<p>&ldquo;It could have been tampered with,&rdquo; he told
+himself. This was all too true. While the boat
+had been in the harbor it had not been any
+too carefully guarded&mdash;and Johnny had been
+off duty one whole night! &ldquo;Might cost me
+dearly&mdash;that night!&rdquo; he thought.</p>
+<div class="pb" id="Page_169">[169]</div>
+<p>To ease his mind he began watching the passing
+show&mdash;fire-glowing shrimps&mdash;flying snails,
+and a host of other strange creatures. He
+snapped his camera again and again.</p>
+<p>&ldquo;I say, up there,&rdquo; he exclaimed impatiently,
+&ldquo;what&rsquo;s keeping us?&rdquo;</p>
+<p>&ldquo;Sorry, Johnny. It&rsquo;s the hoist. We&mdash;&rdquo;</p>
+<p>Doris stopped suddenly. Johnny felt a
+shock&mdash;as if his cable had been struck by something
+hard and heavy. At the same instant the
+ball began drifting away from the submerged
+wall of rock.</p>
+<p>&ldquo;Hey, there!&rdquo; he called, in genuine alarm,
+&ldquo;what&rsquo;s up now?&rdquo;</p>
+<p>There came no answer. He called again, and
+yet again. No answer. His heart began pounding
+madly.</p>
+<p>&ldquo;This won&rsquo;t do,&rdquo; he told himself, savagely.
+&ldquo;Probably nothing&mdash;just nothing at all! It&mdash;&rdquo;</p>
+<p>Then came a second, jolting shock, and&mdash;ceasing
+to move in a circle&mdash;the ball began
+drifting quite rapidly away from the rock and
+out to sea.</p>
+<div class="pb" id="Page_170">[170]</div>
+<p>Johnny knew at once what had happened.
+One of the anchor cables holding the boat in
+place had been struck and broken.</p>
+<p>&ldquo;By that submarine!&rdquo; he burst out savagely.
+Then as if it were right out there in the water
+in front of him, he seemed to see the
+green arrow of light, and to read:</p>
+<p>&ldquo;<i>We will strike</i>&mdash;at the earliest possible
+moment!&rdquo;</p>
+<p>&ldquo;They have struck!&rdquo; he thought. &ldquo;The
+second cable has been broken by the added
+strain&mdash;and we are drifting out to sea!&rdquo;</p>
+<p>He tried to think what this meant. The
+hoist was broken, so he could not be pulled
+up. Out to sea some three or four miles were
+coral reefs and beneath these, no doubt, a
+rocky wall. Moving at its present rate and
+striking that wall, the steel ball might crack!</p>
+<p>Only one cheery thought came to him at
+this moment. If the boat&rsquo;s small motor was
+strong enough to counteract the force of wind
+and current, he could be held in one position
+until the hoist was repaired.</p>
+<div class="pb" id="Page_171">[171]</div>
+<p>Even as he thought this, Doris came back
+on the air: &ldquo;Awfully sorry, Johnny, but something
+has severed an anchor cable&mdash;and then
+the other one broke! The hoist won&rsquo;t work.
+We&rsquo;d have the motor going, but that, too,
+seems to have gone wrong. Keep your chin up,
+Johnny. We&rsquo;ll get you up out of there before
+it&rsquo;s&mdash;too late.&rdquo; Her voice faltered at the end.</p>
+<p>Johnny found it impossible to utter a single
+word in reply.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>In the meantime, Mildred still was following
+the signs of the green arrow trail.</p>
+<p>As she advanced, the trail grew steeper and
+rougher. She followed it between dark pines,
+where the shadows were like night, along a narrow
+ledge to an abrupt descent into a low
+ravine.</p>
+<p>More than once, as if contemplating retreat,
+she turned and looked back. But always, she
+went on.</p>
+<p>At last, weary from climbing, she dropped
+down on a flat rock in the shade and dabbed
+at her damp cheeks with a white, red-bordered
+handkerchief.</p>
+<div class="pb" id="Page_172">[172]</div>
+<p>As she rested she turned her head quite suddenly
+to listen. All the usual sounds of the
+tropical wilderness&mdash;the call of monkeys, the
+shrill squawks of parrots, the piercing screams
+of jungle birds&mdash;these all were familiar to her.
+But did she hear some strange sound&mdash;perhaps
+a human call? Listening intently for a moment
+longer, she rose and journeyed on.</p>
+<p>Some ten minutes later she paused once
+more. She had come to a spot where the trail
+led round a towering cliff. In an involuntary
+gesture of dismay her hand unclasped and she
+dropped her handkerchief. It fell unnoticed
+among some large leaves&mdash;a bit of red and
+white amid the eternal gray and green of the
+jungle.</p>
+<p>Summoning all her courage, Mildred proceeded
+along the rocky trail. Like a soldier
+she tramped straight on until, with a startled
+cry, she stopped abruptly, on rounding a sharp
+turn in the path.</p>
+<div class="pb" id="Page_173">[173]</div>
+<p>There, directly ahead, was the ancient castle
+that might once have been a fortress or a
+prison. Standing before its door and staring
+intently at her, was a man with a rifle.
+Turning to flee, in complete panic&mdash;she found
+herself facing another man, similarly armed.</p>
+<p>A man in front of her, and one in back&mdash;a
+towering cliff above&mdash;a precipice below. She
+was trapped.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>Darkness came to the Kennedy cottage, but
+no Mildred returned to join its worried owner
+at his evening meal.</p>
+<p>He ate alone and in silence. In silence he
+smoked his pipe on the veranda until midnight.
+Then he went to the house of Pean, his head
+native.</p>
+<p>&ldquo;Pean,&rdquo; he said, &ldquo;she has not returned. At
+three o&rsquo;clock, unless I come again, tell Camean
+to make <i>wanga</i> with the drums.&rdquo;</p>
+<p>&ldquo;Make <i>wanga</i> at three. Can do,&rdquo; said Pean.</p>
+<div class="pb" id="Page_174">[174]</div>
+<h2 id="c16"><span class="small">CHAPTER XVI</span>
+<br />VOICE OF DRUMS</h2>
+<p>Johnny, meanwhile, was having a very
+bad hour all by himself. Still drifting a
+thousand feet beneath the surface of the sea,
+he awaited his deliverance&mdash;a deliverance he
+knew might never come.</p>
+<p>Knowing little about the rate at which the
+powerless boat might be drifting, he made a
+guess; it should be about two miles per hour.
+&ldquo;That gives me less than two hours,&rdquo; he told
+himself, grimly.</p>
+<p>After noting the time, he decided to take a
+few more pictures&mdash;just in case.</p>
+<p>Never before, he imagined, had such opportunity
+for taking undersea shots been given
+any living being. Moving at fairly steady
+speed, he passed through countless schools of
+deep-sea creatures, and never before had
+Johnny looked upon such fantastic sights.</p>
+<div class="pb" id="Page_175">[175]</div>
+<p>&ldquo;Like things in a nightmare,&rdquo; he told himself.
+&ldquo;All heads&mdash;practically no bodies at all&mdash;some
+long and slim as a leadpencil, with noses half
+the length of their bodies. If ever I get out
+of this I probably shall be famous. But&mdash;&rdquo;</p>
+<p>What was this? His eyes stared at the compass.
+It appeared to have gone wrong, or else&mdash;</p>
+<p>&ldquo;Hey!&rdquo; he called into the loud speaker,
+&ldquo;what&rsquo;s up? Are we going north by east&mdash;&rdquo;</p>
+<p>&ldquo;North by east is right. Oh, Johnny!&rdquo;
+Doris apologized, &ldquo;I didn&rsquo;t let you know, but
+they have the sails up, and we&rsquo;re traveling in
+a circle. We think that will keep you off the
+rocks. The chart is not very clear, but we can
+cruise around for hours if&mdash;if it is necessary.&rdquo;</p>
+<p>&ldquo;Hours!&rdquo; Johnny groaned.</p>
+<p>&ldquo;Well, anyway&mdash;&rdquo; Doris stopped, abruptly.
+Then:</p>
+<p>&ldquo;Johnny! You&rsquo;re saved! The mate just told
+me the hoist will be working again any minute
+now!&rdquo;</p>
+<p>&ldquo;Hooray!&rdquo; Johnny shouted. &ldquo;Hooray! We live
+again! Boy-oh-boy!&rdquo;</p>
+<div class="pb" id="Page_176">[176]</div>
+<p>&ldquo;Yes, Johnny,&rdquo;&mdash;the girl&rsquo;s voice went husky,
+&ldquo;it will be good to see you!&rdquo;</p>
+<p>Ten minutes later, Johnny was going up.
+Slowly, surely, the dense darkness passed. The
+blue black of early dawn was changing places
+with glorious hues, and then came the light
+of a rapidly passing day.</p>
+<p>As he tumbled from the steel ball Johnny
+placed a box of plates carefully on the deck.</p>
+<p>&ldquo;There you are!&rdquo; he exclaimed. &ldquo;Pictures I&rsquo;ll
+really live to see!&rdquo;</p>
+<p>The pictures were superb&mdash;all the professor
+could have dreamed of, and more. &ldquo;These,
+alone, will add greatly to the world&rsquo;s riches,&rdquo;
+he said, placing a trembling hand on Johnny&rsquo;s
+shoulder.</p>
+<p>&ldquo;And when you show them,&rdquo; Johnny
+grinned, &ldquo;tell your audience they were taken
+by a ship&rsquo;s watch, will you?&rdquo;</p>
+<p>&ldquo;I take it,&rdquo; said the professor with a laugh,
+&ldquo;that you think you&rsquo;d like to keep your feet
+on the ground, for a while!&rdquo;</p>
+<p>&ldquo;Absolutely,&rdquo; Johnny agreed. &ldquo;And in more
+ways than one!&rdquo;</p>
+<div class="pb" id="Page_177">[177]</div>
+<p>Johnny went back to his old task of walking
+the deck that night. There would be no
+more tampering with hoists and motors if he
+knew anything about it&mdash;and he surely would
+know if it happened in the night.</p>
+<p>For some unknown reason, this night was
+not like others that had passed. There seemed
+to be a spirit of unrest in the air.</p>
+<p>Doris, too, felt it. Enveloped in a midnight-blue
+gown, she wandered out on deck.</p>
+<p>&ldquo;It&rsquo;s ridiculous,&rdquo; she exclaimed. &ldquo;A grand
+night to sleep, but my eyes just will not stay
+closed!&rdquo;</p>
+<p>&ldquo;There are ghosts in the air,&rdquo; said Johnny.
+&ldquo;I have felt them and almost heard their
+wings&mdash;or do ghosts have wings? There goes
+one now!&rdquo;</p>
+<p>Doris jumped as some swift, darting thing
+shot past her head.</p>
+<p>&ldquo;Oh, no!&rdquo; Johnny laughed. &ldquo;Only a bat.
+You&rsquo;d think&mdash;&rdquo;</p>
+<p>He stopped suddenly to stare at the distant
+hills. The next instant, with binoculars held
+to his eyes with one hand and a pencil in the
+other, he was recording a message.</p>
+<div class="pb" id="Page_178">[178]</div>
+<p>&ldquo;The green arrow speaks again,&rdquo; he murmured
+softly. &ldquo;Oh&mdash;Oh&mdash;now it&rsquo;s gone! Snapped right
+off as if a fuse had blown.</p>
+<p>&ldquo;Oh, well&mdash;perhaps it will flash again, later.&rdquo;
+He stuffed his notebook into his pocket.</p>
+<p>&ldquo;We&rsquo;ll be leaving here soon,&rdquo; Doris said
+quietly. &ldquo;In two or three days, I think.
+Grandfather received a wireless today. And
+how I&rsquo;m going to hate it.&rdquo; She sighed. &ldquo;This,&rdquo;
+she spread her arms wide, &ldquo;this has been
+grand! Moonlight on gorgeous waters! Strange
+tropical shores. Adventure!&rdquo;</p>
+<p>&ldquo;And bats!&rdquo; said Johnny, as one shot past
+his ear.</p>
+<p>&ldquo;But even they are different,&rdquo; she insisted,
+smiling.</p>
+<p>&ldquo;Yes, I know,&rdquo; Johnny agreed. &ldquo;To go to
+strange places, to see new things, to find excitement,
+thrills, mystery and adventure&mdash;that&rsquo;s
+life!&rdquo;</p>
+<p>&ldquo;Is it for most people?&rdquo; she whispered.</p>
+<div class="pb" id="Page_179">[179]</div>
+<p>&ldquo;Perhaps not,&rdquo; he replied thoughtfully.
+&ldquo;Most people like to be safe and comfortable,
+to go to the same places, to see the same
+people, do the same things. That&rsquo;s their privilege,
+of course.&rdquo;</p>
+<p>&ldquo;That&rsquo;s right, Johnny. And now&mdash;goodnight.&rdquo;</p>
+<p>&ldquo;Goodnight,&rdquo; he replied, softly.</p>
+<p>Halfway between midnight and morning,
+when even the bats were less active, and the
+whole tropical world seemed asleep, Johnny
+was amazed to hear the sudden roll of a native
+drum, from the island. The very sound
+of it at that eerie hour, set his blood racing
+and his skin prickling.</p>
+<p>&ldquo;Drums!&rdquo; he ejaculated. &ldquo;What can that
+mean?&rdquo;</p>
+<p>For a time the weird beats were a
+steady roll. Then they began breaking up;
+two beats, a pause&mdash;one beat&mdash;pause, three
+beats&mdash;pause....</p>
+<p>&ldquo;Like a message,&rdquo; he whispered. Then with
+a start, he recalled the message of the green
+arrow&mdash;undeciphered in his pocket!</p>
+<div class="pb" id="Page_180">[180]</div>
+<p>Dragging it out, he began decoding it, growing
+more and more wildly excited every
+minute.</p>
+<p>&ldquo;H&mdash;E&mdash;&rdquo; he worked it out &ldquo;L&mdash;P! <i>HELP!</i>&rdquo;</p>
+<p>&ldquo;Someone is in trouble,&rdquo; he whispered. &ldquo;But
+there are only three letters left. Rapidly he
+studied these out.</p>
+<p>&ldquo;<i>Help Mil</i>&mdash;&rdquo;</p>
+<p>A cold sweat broke out on his brow. He recalled
+Mildred&rsquo;s determination to follow that
+green arrow trail. Had she followed it too far?
+Had the spies captured her? Was she a prisoner?
+And had she attempted to get off a message
+on the green arrow, only to be interrupted?
+Or perhaps even&mdash;</p>
+<p>&ldquo;I might be wrong,&rdquo; he told himself. But he
+dared not hope.</p>
+<p>Again there were the drums. This time a
+drum close at hand, on shore, thundered out.
+Then, from far away in the jungle came an
+answer, another, and yet another. It was
+ghostly, romantic, thrilling. Johnny&rsquo;s hair
+fairly stood on end. But what did it mean?</p>
+<p>He caught the sound of soft footfalls.
+Instantly he was on his feet, all attention.</p>
+<div class="pb" id="Page_181">[181]</div>
+<p>&ldquo;Oh!&rdquo; he exclaimed softly. &ldquo;It is you,
+Samatan.&rdquo;</p>
+<p>&ldquo;Yes. The drums! They speak!&rdquo; murmured
+Samatan. &ldquo;Something&mdash;it is very bad.&rdquo; His
+voice was low-pitched, tense.</p>
+<p>&ldquo;What do they say?&rdquo; Johnny asked in a
+whisper.</p>
+<p>&ldquo;That something very wrong. This what
+drums say!&rdquo; The old man&rsquo;s voice was vibrant
+with emotion.</p>
+<p>&ldquo;They say Kennedy has had <i>bad</i> done him!
+Natives must come. All who love Kennedy
+must come. And all natives love Kennedy! All
+night they must come. In morning they
+march&mdash;perhaps they fight! Much fight for
+Kennedy! Maybe much die!&rdquo; His voice
+trailed off.</p>
+<p>&ldquo;Yes,&rdquo; Johnny choked. &ldquo;Something terrible
+has happened. We must go, Samatan!&rdquo;</p>
+<p>&ldquo;Just when it little light, in my dugout, we
+go, Johnny,&rdquo; said Samatan, quietly.</p>
+<div class="pb" id="Page_182">[182]</div>
+<p>Settling back in a steamer chair the old man
+closed his eyes and appeared to sleep. While
+from the shore came again and again the
+vibrant rumble of the drums&mdash;tum&mdash;tum&mdash;tum&mdash;tum&mdash;on
+and on into the night that was
+marching toward the dawn of another day.</p>
+<p>Tense with forebodings of what might be
+in store, Johnny waited&mdash;impatient and grimly
+expectant.</p>
+<div class="pb" id="Page_183">[183]</div>
+<h2 id="c17"><span class="small">CHAPTER XVII</span>
+<br />MARCHING ON THE CASTLE</h2>
+<p>Old Samatan was not asleep. He was only
+thinking. After a time he opened his
+eyes wide, to stare at the dark shore where
+drums still beat out their message.</p>
+<p>&ldquo;Make <i>wanga</i>,&rdquo; he said to Johnny. &ldquo;Always
+when trouble, my people make <i>wanga</i>&mdash;make
+prayer to Voodoo gods. Gods help good natives
+win victories.&rdquo;</p>
+<p>&ldquo;Great!&rdquo; exclaimed Johnny. &ldquo;Then we shall
+win!&rdquo;</p>
+<p>&ldquo;Yes. Win,&rdquo; the old man said, softly.</p>
+<p>Then Johnny told Samatan of the green arrow
+trail that Mildred had said she would follow.
+He told of the suddenly broken message
+he had picked up from the green arrow.</p>
+<div class="pb" id="Page_184">[184]</div>
+<p>Thinking deeply, Samatan declared they
+should go very soon&mdash;at least a full hour before dawn.</p>
+<p>&ldquo;Shall Dave go, too?&rdquo; Johnny asked.</p>
+<p>&ldquo;Plenty men on shore,&rdquo; the old man waved
+an arm. &ldquo;We go&mdash;tell Kennedy. That all. Dave?
+Better Dave stay.&rdquo;</p>
+<p>Half an hour later, Johnny wakened Dave
+to tell him what was going on. At first Dave
+was determined to go with them and have a
+hand in the affair. But after sober thought he
+decided it best to stay with the ship.</p>
+<p>&ldquo;The ship may be needed before this thing
+is over,&rdquo; he said.</p>
+<p>&ldquo;Yes, it may,&rdquo; Johnny agreed.</p>
+<p>So, guided by native fires on the beach,
+Johnny and Samatan headed for shore.</p>
+<p>Johnny was steeped in gloom as he pictured
+the golden-haired little beach-comber, the
+prisoner of unscrupulous spies.</p>
+<p>&ldquo;Nothing could be worse,&rdquo; he groaned. &ldquo;I
+should have warned her never to go, alone!&rdquo;</p>
+<div class="pb" id="Page_185">[185]</div>
+<p>But the moment their boat touched shore,
+Johnny&rsquo;s mood changed quickly for the better.
+Seldom had he witnessed a more inspiring
+sight. In two short hours, more than a hundred,
+dark-faced, half-clad, natives had gathered
+at the call of their beloved Kennedy.</p>
+<p>They were squatting around the fires, roasting
+small fish or strips of peccary meat and
+gulping cups of bitter, black coffee.</p>
+<p>&ldquo;They will go for a whole day on this,&rdquo;
+Kennedy told him, &ldquo;and still be with us when
+the day is done.&rdquo;</p>
+<p>When Johnny told of the green arrow&rsquo;s message
+and the trail Mildred had sworn to follow,
+the old man&rsquo;s brow wrinkled.</p>
+<p>&ldquo;I suspected something of the sort,&rdquo; he
+rumbled, &ldquo;but this is worse than I figured.
+There may be a number of those spies&mdash;all
+well armed. And we&mdash;&rdquo; he went on, with a
+touch of sadness, &ldquo;these people here are not
+warlike. We have two heavy rifles of ancient
+make, half a dozen light, hunting rifles, two
+or three shotguns, and a hundred machetes.
+But these natives&mdash;&rdquo; There was a rumble of
+admiration in his voice. &ldquo;You should see what
+these men can do with those two-foot blades
+of theirs! There are two grindstones out
+behind the house&mdash;and they haven&rsquo;t stopped
+turning for hours!&rdquo;</p>
+<div class="pb" id="Page_186">[186]</div>
+<p>Johnny felt a tingle course through his veins
+as the old man finished. It was, he thought,
+like the days of old, like something he had
+read in a book. They were to storm an ancient
+castle to rescue a fair lady!</p>
+<p>There were men among that loyal throng
+who knew every trail leading to the old castle.</p>
+<p>&ldquo;The men say it will take about three hours
+to reach the place,&rdquo; said Kennedy, when just
+after dawn, they prepared to break camp. &ldquo;We
+shall have to march in silence, as sound travels
+far. I only hope,&rdquo; his brow wrinkled, &ldquo;that
+these spies did not guess the meaning of those
+drums. I hated that. But there was no other
+way to get the men together, nor,&rdquo; he added
+in an undertone, &ldquo;to put the real, fighting spirit
+into them. For more than a hundred years,
+the beating of these drums has meant battle!&rdquo;</p>
+<p>&ldquo;And how they respond to it!&rdquo; Johnny
+enthused.</p>
+<div class="pb" id="Page_187">[187]</div>
+<p>&ldquo;Yes, Johnny,&rdquo; the old man rumbled. &ldquo;These
+are faithful, loyal people. Think what it would
+mean to have these islands taken over by a
+foreign power&mdash;cannon and bombing planes everywhere.
+If war came, think how these beautiful
+islands would be torn to bits by bursting
+bombs! Just think Johnny! Try to imagine it!&rdquo;</p>
+<p>For a moment after that, there was silence.
+Kennedy&rsquo;s voice was husky when he spoke
+again. &ldquo;Johnny, my boy&mdash;I&rsquo;ve come to like you
+a heap. Promise me, Johnny, that if anything
+should happen to me this day, you&rsquo;ll see the
+girl safely back to her own land where she
+rightly belongs.&rdquo;</p>
+<p>&ldquo;Nothing can happen to you,&rdquo; Johnny declared,
+stoutly. &ldquo;You could handle four of
+those cowards, single-handed.&rdquo;</p>
+<p>&ldquo;Promise me,&rdquo; the old man insisted.</p>
+<p>&ldquo;I promise.&rdquo; Johnny put out a hand that
+was at once caught in a grip of steel.</p>
+<p>And so they marched away into the golden,
+tropical dawn.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>Those on the <i>Sea Nymph</i> were on deck early
+that morning. Coffee and muffins were served
+in the forward cabin. After Dave told what
+was happening on land, a silence fell over the
+party. Active, happy, always friendly, Mildred
+had found her way into all their hearts.</p>
+<div class="pb" id="Page_188">[188]</div>
+<p>&ldquo;Dave,&rdquo; said the professor at last, breaking
+the silence, &ldquo;since that fine old man Kennedy
+is in a good way to lose his granddaughter&mdash;&rdquo;</p>
+<p>&ldquo;Oh, but he won&rsquo;t!&rdquo; Doris broke in. &ldquo;Not
+with Johnny Thompson on the trail of those
+spies. I had a letter last week from an old
+friend, Marjory Morrison. She&rsquo;s known our
+Johnny a long time, and she says he&rsquo;s a
+marvel!&rdquo;</p>
+<p>&ldquo;No doubt,&rdquo; said the professor. &ldquo;But spies,
+my dear!&rdquo;</p>
+<p>&ldquo;Spies are cowards,&rdquo; Doris exclaimed. &ldquo;Just
+the same&mdash;I&rsquo;d like doing something for those
+Kennedys!&rdquo;</p>
+<p>&ldquo;Just what I was about to suggest,&rdquo; the professor
+beamed. &ldquo;Manifestly, we can&rsquo;t sail this
+ship up that mountain but we can go in search
+of their sunken schooner!&rdquo;</p>
+<p>&ldquo;Oh, yes!&rdquo; Doris sprang up. &ldquo;Let&rsquo;s do that!
+Anything to help!&rdquo;</p>
+<div class="pb" id="Page_189">[189]</div>
+<p>&ldquo;I know the spot, within a mile,&rdquo; said Dave.
+&ldquo;Kennedy showed me on the map. It&rsquo;s not
+over three miles from here.&rdquo;</p>
+<p>&ldquo;Good! We shall weigh anchor at once,&rdquo; exclaimed
+the professor. &ldquo;In the steel ball, Dave,
+you should be able to locate the schooner in
+a very short time.&rdquo;</p>
+<p>&ldquo;And then?&rdquo; asked Dave.</p>
+<p>&ldquo;One problem at a time,&rdquo; smiled the professor,
+who during his long life had solved
+many a problem.</p>
+<p>Fifteen minutes more and they were away.</p>
+<p>&ldquo;Do you think we shall be able to find their
+sunken schooner?&rdquo; Doris asked, as she and
+Dave stood in the prow, looking at the hills.
+&ldquo;That depends,&rdquo; said Dave. &ldquo;Just now, another
+problem interests me more.&rdquo;</p>
+<p>&ldquo;And that?&rdquo;</p>
+<p>&ldquo;Whether that girl, who seems the very
+spirit of the island, ever will sail that schooner
+again.&rdquo;</p>
+<div class="pb" id="Page_190">[190]</div>
+<p>&ldquo;Never doubt it,&rdquo; said Doris. But in spite
+of her high hopes, she herself was in grave
+doubt.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>Johnny was never to forget that silent
+march up the tropical island trail. Before him
+glided a native guide. Behind him, taking each
+steep ascent with the quiet, steady breathing
+of a boy, came the giant Kennedy.</p>
+<p>After these marched a silent throng. Their
+faces and machetes shining in the morning
+sun, they were a band of simple, honest natives,
+in whose midst Kennedy long had stood
+out as king.</p>
+<p>A monkey chattered from a tree, but no
+rifle was aimed at him. A parrot screamed,
+and over in a narrow ravine, a drove of wild
+pigs scampered unmolested over the dry moss
+of the jungle.</p>
+<p>&ldquo;We&rsquo;re seeking bigger game, today,&rdquo; the boy
+thought, grimly.</p>
+<p>Finally they arrived at a point not far distant
+from the turn, beyond which lay the castle.
+Kennedy held up a hand, and the men
+gathered silently about him. In low tones he
+gave them final instructions.</p>
+<div class="pb" id="Page_191">[191]</div>
+<p>There were, he said, three trails to the
+ancient castle. They would divide into three
+groups. John Puleet, a stalwart native, with
+his followers, would circle the hill to the right.
+Teratella, another burly leader of the islanders,
+would go to the left with his men. Time
+would be given them to take their positions.
+When this had been done, a &ldquo;wild parrot&rdquo;
+would scream from the right, another from the
+left&mdash;and they would all move forward.</p>
+<p>&ldquo;We&rsquo;ll take the trail straight ahead, with old
+Samatan,&rdquo; he said to Johnny. &ldquo;It&rsquo;s the toughest
+of them all, if we are attacked.&rdquo;</p>
+<p>&ldquo;O.K.&rdquo; Johnny murmured, gripping his light
+hunting rifle.</p>
+<p>Silently, one by one, a hundred men crept
+into the brush. After that, save for the chirp
+of some small bird and the faint sound of a
+dashing stream, all was silent. It was, Johnny
+thought, the dead silence that comes before a
+storm.</p>
+<p>Stooping suddenly, he picked something
+from among the leaves by the trail. It was
+Mildred&rsquo;s lost handkerchief. He held it out for
+Kennedy to see, but neither said a word.</p>
+<div class="pb" id="Page_192">[192]</div>
+<h2 id="c18"><span class="small">CHAPTER XVIII</span>
+<br />THE BATTLE</h2>
+<p>Meanwhile, Dave and Doris were
+warming to the search for the small
+trading boat that had meant so much to
+Kennedy and Mildred.</p>
+<p>Having found the approximate location
+where the little supply schooner sank, Dave
+climbed into the steel ball and was lowered
+into the deep. For an hour after that, with
+the steel ball always close to the bottom, they
+sailed about in ever widening circles. From
+time to time Doris called on the radio:</p>
+<p>&ldquo;See anything?&rdquo;</p>
+<p>&ldquo;Yes, a whole flotilla of jellyfish,&rdquo; would
+come Dave&rsquo;s laughing answer. Or&mdash;&ldquo;there&rsquo;s an
+ancient wreck off to the right&mdash;goes back to
+pirate days, I&rsquo;m sure. But I don&rsquo;t catch the
+faintest gleam of a white schooner.&rdquo;</p>
+<div class="pb" id="Page_193">[193]</div>
+<p>When at last he returned to the surface and
+was released from his spherical prison, he complained
+of eye-strain.</p>
+<p>&ldquo;Let me go down with you,&rdquo; Doris pleaded.
+&ldquo;I&rsquo;ll be eyes for you. Together we can&rsquo;t fail to
+find the schooner. We just must get it
+located!&rdquo;</p>
+<p>&ldquo;What do you say, professor?&rdquo; Dave turned
+to his superior.</p>
+<p>&ldquo;What&rsquo;s the bottom like?&rdquo;</p>
+<p>&ldquo;All sand.&rdquo;</p>
+<p>&ldquo;No rocks?&rdquo;</p>
+<p>&ldquo;Not a one.&rdquo;</p>
+<p>&ldquo;O.K., my girl&mdash;in you go.&rdquo; The professor
+waved a hand, and in they went.</p>
+<p>To the imaginative Doris, this fairyland of
+waving seaweed, darting fish, and drifting
+jellyfish was most entertaining, but she never
+forgot their real mission. &ldquo;Dave!&rdquo; she exclaimed
+more than once. &ldquo;I see something!&rdquo;
+A moment of excitement, and then&mdash;&ldquo;No&mdash;it&rsquo;s
+nothing but a bit of coral, after all.&rdquo;</p>
+<p>Then, of a sudden, a whisper reached her
+ear:</p>
+<div class="pb" id="Page_194">[194]</div>
+<p>&ldquo;One eighty&mdash;eighty-two and a half&mdash;eighty
+four&mdash;&rdquo;</p>
+<p>&ldquo;Dave! He&rsquo;s back! The whisperer is back!&rdquo;
+Doris spoke before she thought.</p>
+<p>&ldquo;Why! Hello there, mermaid!&rdquo; came in
+words startlingly distinct.</p>
+<p>Doris and Dave remained silent. Who could
+this be? Where was he? On land, or in the sea?
+Or on it?</p>
+<p>For a time they heard that whispering of
+numbers. Then it faded, as abruptly as it had
+come.</p>
+<p>As they drifted, they quietly discussed the
+strange whispering, but came to no logical
+conclusions. Neither did they sight any white
+schooner, resting on the bottom.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>For a long time, there on the side of the
+hill beneath the tropical sun, Kennedy&rsquo;s fighting
+band watched and waited.</p>
+<p>&ldquo;The signal will come,&rdquo; Johnny thought with
+a thrill. &ldquo;The signal to move! And then&mdash;</p>
+<p>&ldquo;There! There it is now!&rdquo; he exclaimed in a
+hoarse whisper.</p>
+<div class="pb" id="Page_195">[195]</div>
+<p>There had come the distant scream of a wild
+parrot. One more scream.</p>
+<p>&ldquo;Now!&rdquo; said Kennedy. &ldquo;Let&rsquo;s go!&rdquo;</p>
+<p>&ldquo;We go,&rdquo; old Samatan said, simply.</p>
+<p>Johnny would have taken the lead, but the
+old man pushed him back. Cautiously they
+moved straight ahead.</p>
+<p>Johnny sighed in relief as they reached the
+end of a narrow pass. That, he thought, would
+have been a bad place to be caught. His sense
+of relief was short-lived, however, for out from
+the wide door of the ancient castle, burst a
+man with a rifle. Instantly Johnny recognized
+him as the man whom he had saved from the
+grip of the octopus.</p>
+<p>&ldquo;Come on!&rdquo; he exclaimed, as the man leveled
+his rifle. A shot cracked out, and a bullet
+burned Johnny&rsquo;s cheek. Next instant the man
+dodged and the rifle clattered from his nerveless
+hands. There had been a flash of steel,
+as Samatan had thrown his machete. Its point
+was buried in the door, just back of the spot
+where the man&rsquo;s head had been.</p>
+<div class="pb" id="Page_196">[196]</div>
+<p>Dropping his rifle, Johnny executed a flying
+tackle, bringing the man to the ground, with
+a thud. Instantly two powerful natives pinned
+him to the earth.</p>
+<p>&ldquo;Come on!&rdquo; Kennedy shouted, as the door
+stood open a crack. &ldquo;We&rsquo;re going in!&rdquo; His
+powerful shoulder forced the door so suddenly
+that a man on the other side of it was instantly
+floored. A second man&mdash;huge, fat, beast-like&mdash;lurched
+at Kennedy with a knife. He was felled
+with one blow of the old man&rsquo;s bare fist.</p>
+<p>&ldquo;Now!&rdquo; Kennedy roared, towering over the
+prostrate pair. &ldquo;Tell me where my granddaughter
+is or I&rsquo;ll tear you limb from limb!&rdquo;</p>
+<p>&ldquo;Girl?&rdquo; the fat man stammered in broken
+English. &ldquo;Gone&mdash;gone.&rdquo;</p>
+<p>&ldquo;Where to?&rdquo; Kennedy touched the man none
+too gently with his foot. But the halting reply
+could not be understood.</p>
+<p>&ldquo;Please, sir,&rdquo; came in a youthful voice from
+the corner, &ldquo;if I may, I will tell you.</p>
+<div class="pb" id="Page_197">[197]</div>
+<p>&ldquo;But first I must tell you,&rdquo; said the youth
+who, until now, had not been noticed, &ldquo;that
+I am not one of these!&rdquo; He nodded at the men
+on the floor. &ldquo;I was coming to America to join
+my father, and they compelled me to accompany
+them here.&rdquo;</p>
+<p>&ldquo;Is that true?&rdquo; Kennedy demanded of the
+stout man on the floor. The man nodded.</p>
+<p>&ldquo;All right. Tell us.&rdquo; Kennedy&rsquo;s voice softened
+a little as he spoke to the youth.
+&ldquo;Where is my granddaughter?&rdquo;</p>
+<p>&ldquo;They took her to the submarine,&rdquo; said the
+boy.</p>
+<p>&ldquo;The submarine?&rdquo; Kennedy stared.</p>
+<p>&ldquo;Yes. There is a submarine,&rdquo; said the boy.
+&ldquo;They are making a survey of the sea-bottom
+around these islands! Don&rsquo;t you see,&rdquo; the boy
+seemed anxious to please, &ldquo;in time of war, they
+shall place depth bombs and steel nets&mdash;and
+establish submarine bases!&rdquo;</p>
+<p>&ldquo;I see,&rdquo; Kennedy replied in a low tone that
+was not good to hear. &ldquo;Very nice, I should
+say. We seem to have stumbled into the
+situation at about the right time!</p>
+<p>&ldquo;But my granddaughter.&rdquo; His voice rose.
+&ldquo;She is on this submarine?&rdquo;</p>
+<p>&ldquo;Yes sir.&rdquo;</p>
+<div class="pb" id="Page_198">[198]</div>
+<p>&ldquo;Then,&rdquo; roared Kennedy, &ldquo;we shall find the
+submarine! And if we do not&mdash;or if my granddaughter
+has been harmed&mdash;!&rdquo; He laid his
+machete, sheath and all, across the stout man&rsquo;s
+throat. And the stout man turned a sickish,
+yellow-green. And not without reason.</p>
+<p>&ldquo;Get up!&rdquo; commanded Kennedy. The two
+men stood up. &ldquo;I&rsquo;ll guard them,&rdquo; he said to
+Johnny. &ldquo;You and the natives search this place.
+Gather up every scrap of paper to be found.
+There should be ample evidence of this espionage.
+And&mdash;there is not a moment to be lost!&rdquo;</p>
+<p>&ldquo;Not a second,&rdquo; said Johnny.</p>
+<p>A few hours later, with three other prisoners
+taken by the second band of natives attempting
+to flee from the rear of the castle, they
+were back at the Kennedy cottage. At once
+Johnny and Samatan prepared to leave for the
+<i>Sea Nymph</i>.</p>
+<p>&ldquo;We&rsquo;ll do all in our power to find that
+submarine,&rdquo; Johnny assured Kennedy, as he
+and Samatan pushed off....</p>
+<div class="pb" id="Page_199">[199]</div>
+<p>But Johnny could not have known, of course
+that the submarine had been found....</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>For a long time Doris had watched the sea
+bottom as the steel ball moved about in a circle
+that ever grew wider. So absorbed had she
+become that her ear-phones were forgotten.
+When suddenly a voice broke in on her
+thoughts, she jumped involuntarily.</p>
+<p>&ldquo;Hey, there! I say, there! Are you there?&rdquo;
+came in a hoarse, anxious voice. &ldquo;Listen! It&rsquo;s
+important! Listen! Are you there?&rdquo;</p>
+<p>Doris adjusted her microphone, then answered,
+as her heart missed a beat. &ldquo;Yes, we
+are here. Why?&rdquo;</p>
+<p>&ldquo;Listen!&rdquo; came in gutteral tones. &ldquo;We are on
+the bottom, and we can&rsquo;t get up!&rdquo;</p>
+<p>&ldquo;Try the Australian crawl,&rdquo; Doris laughed
+into her speaker. These people were good at
+kidding, whoever they were.</p>
+<p>&ldquo;Listen!&rdquo; came in a man&rsquo;s voice, hoarse and
+insistent&mdash;even pleading. &ldquo;We are in a small
+submarine. We are on bottom and our pumps
+have failed!&rdquo;</p>
+<p>&ldquo;Submarine!&rdquo; Doris whispered, as she and
+Dave gaped at each other.</p>
+<div class="pb" id="Page_200">[200]</div>
+<p>&ldquo;We are about two hundred feet down,&rdquo; the
+voice went on, desperately. &ldquo;Something&rsquo;s gone
+wrong with our pumps, and we can&rsquo;t blow out
+the water in our compartments. You gotta
+help us. We have a friend of yours here and
+she&rsquo;ll tell you I&rsquo;m speaking the truth!&rdquo;</p>
+<p>Doris and Dave were startled beyond description
+when they heard Mildred Kennedy&rsquo;s
+voice coming over the air.</p>
+<p>&ldquo;Listen, Doris,&rdquo; the girl&rsquo;s voice was tense
+with emotion. &ldquo;I&rsquo;m down here in this submarine.
+I blundered onto that ancient castle
+up on the ridge, and there were spies there.
+They wouldn&rsquo;t let me go because they&mdash;they
+said I&rsquo;d tell what I saw. And that&mdash;that&rsquo;s
+true. I would!</p>
+<p>&ldquo;But these boys on the submarine&mdash;they&mdash;&rdquo;
+her voice broke a little, &ldquo;they&rsquo;re not really
+spies! They&rsquo;re just boys in the navy of their
+country, doing what they&rsquo;re ordered to do.
+They&rsquo;ve been decent to me, and they&rsquo;d have
+put me back on land if they&rsquo;d dared. So&mdash;so
+you can&rsquo;t let them die like this. You just can&rsquo;t,
+Doris! Besides, I&mdash;&rdquo; she choked, and could not
+finish.</p>
+<div class="pb" id="Page_201">[201]</div>
+<p>&ldquo;We won&rsquo;t let them die and most of all&mdash;we
+won&rsquo;t let <i>you</i> die!&rdquo; declared Dave, who had
+been absorbing every word. &ldquo;Just you keep
+cool and stand by. We&mdash;we&rsquo;ll have our whole
+navy here in no time. Just you see!&rdquo;</p>
+<p>&ldquo;Th&mdash;thanks, Dave ... Mil&mdash;Mildred, signing
+off,&rdquo; came in a wee small voice.</p>
+<p>&ldquo;Gee, she&rsquo;s a game kid,&rdquo; whispered Dave to
+Doris. Then into his microphone:</p>
+<p>&ldquo;Put that man on again,&rdquo; he said.</p>
+<p>&ldquo;Here, here I am,&rdquo; came the hoarse voice
+from the submarine.</p>
+<p>&ldquo;Here&rsquo;s what we&rsquo;ll do,&rdquo; Dave said, shortly.</p>
+<p>&ldquo;We have a fairly powerful wireless on our
+ship. We&rsquo;ll get in touch with the United States
+Naval Station at Port au Prince at once, and
+report the situation. They will send assistance&mdash;even
+though you&rsquo;re over here to help
+your spies! Now&mdash;give me your location&mdash;in
+code.&rdquo;</p>
+<p>&ldquo;O.K.&rdquo; the foreigner answered, humbly,
+&ldquo;Here it is. 2 - 4 - 7, 9 - 3 - 6, 1 - 6 - 3 - 9, 3 -
+7 - 9.&mdash;That is all. Will you please repeat?&rdquo;</p>
+<div class="pb" id="Page_202">[202]</div>
+<p>Dave read the numbers he had written, and
+the sub commander checked them again.</p>
+<p>&ldquo;Don&rsquo;t be nervous or frightened about the
+girl, here,&rdquo; he said. &ldquo;We have oxygen enough
+for thirty-six hours, at least.&rdquo;</p>
+<p>&ldquo;I hate to think what would happen to
+you if any harm comes to her,&rdquo; Dave answered,
+grimly. &ldquo;We&rsquo;re signing off and going
+up.&rdquo;</p>
+<p>To get the Port au Prince naval station was
+only a matter of moments, after the steel ball
+was back on board.</p>
+<p>&ldquo;There&rsquo;s a submarine and a coastguard
+cutter at Santiago de Cuba,&rdquo; was the answer.
+&ldquo;We will get in touch with them at once, and
+you can be sure of fast action!&rdquo;</p>
+<p>After a short wait came the encouraging
+news: &ldquo;Submarine and cutter proceeding to
+the rescue under forced draft!&rdquo;</p>
+<p>Fifteen minutes later the <i>Sea Nymph</i> was in
+motion. Dave, having obtained the grounded
+submarine&rsquo;s location, would sail to the spot
+and stand by to aid, if possible.</p>
+<p>&ldquo;Perhaps we&rsquo;ll go down in the steel ball and
+reach them before that sub arrives,&rdquo; he said.</p>
+<div class="pb" id="Page_203">[203]</div>
+<p>&ldquo;But Dave!&rdquo; Doris exclaimed. &ldquo;What can
+one submarine do for another on the bottom?
+Surely they can&rsquo;t raise it!&rdquo;</p>
+<p>&ldquo;No&mdash;o, they couldn&rsquo;t. Nor could we. But
+then,&rdquo; Dave sighed, &ldquo;there must be some way.
+We&rsquo;ll have to leave that to the navy, I guess.&rdquo;</p>
+<p>Two hours later the steel ball rested on the
+sandy bottom some two hundred feet down,
+and within twenty feet of the submarine&rsquo;s
+dark bulk. As Dave and Doris stared out of
+their window, they saw a face in a port of the
+submarine. It was Mildred, and she was waving
+at them.</p>
+<p>&ldquo;Only twenty feet,&rdquo; Doris murmured, &ldquo;and
+yet for the moment there&rsquo;s nothing we can do!
+How strange&mdash;and how&mdash;how terrible!&rdquo;</p>
+<div class="pb" id="Page_204">[204]</div>
+<h2 id="c19"><span class="small">CHAPTER XIX</span>
+<br />ON THE BOTTOM</h2>
+<p>Night was falling on the waters of the
+blue Caribbean when Johnny and Samatan
+finally reached the <i>Sea Nymph</i>, and were
+told of the sub&rsquo;s predicament. For a full
+hour after darkness fell, Doris and Johnny sat
+on the after deck. But they spoke hardly a
+word. They were thinking of a brave, American
+girl, two hundred feet below surface, in a
+foreign submarine.</p>
+<p>&ldquo;Johnny!&rdquo; Doris gripped the boy&rsquo;s arm suddenly.
+&ldquo;Is that a light&mdash;or is it a star?&rdquo; She
+pointed out to sea.</p>
+<p>&ldquo;A light! No, it&rsquo;s a star. No! No! It <i>is</i> a
+light! See! It blinks!&rdquo;</p>
+<p>&ldquo;Dave!&rdquo; Doris called. &ldquo;The navy is coming!&rdquo;</p>
+<div class="pb" id="Page_205">[205]</div>
+<p>And so it was. As they stood there waiting,
+the light grew brighter and brighter. Then a
+long, sleek form, dark as the night, slid alongside
+the <i>Sea Nymph</i>.</p>
+<p>&ldquo;Ahoy there!&rdquo; a voice called.</p>
+<p>&ldquo;Ahoy!&rdquo; Dave echoed. &ldquo;We&rsquo;ll send our small
+boat for you at once&rdquo;</p>
+<p>Ten minutes later, the young commander of
+the American submarine was on board.</p>
+<p>&ldquo;What&rsquo;s the situation?&rdquo; he demanded,
+briskly.</p>
+<p>&ldquo;They&rsquo;re down here, about two hundred
+feet,&rdquo; said Dave. &ldquo;Their pumps won&rsquo;t work
+and they can&rsquo;t get up!&rdquo;</p>
+<p>&ldquo;That&rsquo;s it, eh? It sounds bad.&rdquo; The young
+officer&rsquo;s voice was somber. &ldquo;I suppose you
+assumed we had a diver on board, and&mdash;until
+three days ago&mdash;we did have. But now he&rsquo;s in
+the hospital with a raging fever!&rdquo;</p>
+<p>&ldquo;Might I inquire,&rdquo; the professor asked, slowly,
+&ldquo;what a diver would do?&rdquo;</p>
+<div class="pb" id="Page_206">[206]</div>
+<p>&ldquo;Certainly,&rdquo; said the officer. &ldquo;We have three
+hundred feet of hose. Somewhere on the side
+of their sub, if it&rsquo;s anything like ours, is a
+short piece of pipe with a thread on it, to
+which our hose could be attached. After that&mdash;when
+they have opened an inner valve&mdash;we
+can pump in enough air to float them. But
+without a diver&mdash;&rdquo;</p>
+<p>&ldquo;I,&rdquo; said the professor, &ldquo;am a diver. Have
+you the equipment?&rdquo;</p>
+<p>&ldquo;You?&rdquo; The young officer looked at the aged
+professor admiringly, but without making a
+reply. All eyes were focused on the dignified
+old man.</p>
+<p>It was Dave who best understood the
+situation.</p>
+<p>He knew the professor had made many a trip
+to the bottom of the sea in a diving outfit,
+but that had been years before. Now he was
+a frail, old man. &ldquo;The pressure at two hundred
+feet is terrific,&rdquo; the boy thought. &ldquo;And his
+doctor has warned him&mdash;even about going
+down in the ball! He must not go.&rdquo;</p>
+<p>Still Dave remained silent. He was thinking
+hard&mdash;thinking how even in life&rsquo;s twilight this
+splendid old man displayed a glorious courage.</p>
+<p>&ldquo;I must go down.&rdquo; It was the professor&rsquo;s
+voice. &ldquo;It is my duty. Those are young people
+with life before them. They must not be
+allowed to perish.&rdquo;</p>
+<div class="pb" id="Page_207">[207]</div>
+<p>Still the young officer did not speak.</p>
+<p>&ldquo;All right, Professor,&rdquo; Dave said huskily.
+&ldquo;But first&mdash;give me an hour! I will try something.
+If I fail&mdash;then your turn comes!&rdquo;</p>
+<p>Slowly the professor grasped Dave&rsquo;s hand.</p>
+<p>In a few precise words, Dave outlined his
+plans. Then he leaped toward the steel ball.
+With all possible speed he was bolted in, lifted
+over the rail, and lowered slowly into the
+ominous, black waters.</p>
+<p>Never before had he been down at night.
+The spectacle that met his eyes as he sank,
+was surprising almost beyond belief. The whole
+sub-sea world seemed on fire. It was like being
+out in a moonless night, surrounded by billions
+of fireflies.</p>
+<div class="pb" id="Page_208">[208]</div>
+<p>As his eyes became accustomed to the
+bizarre scene he was able to distinguish individual
+specimens from among the myriads of
+luminous creatures that crowded the waters.
+Here, like excursion boats all aglow, a score of
+jellyfish floated past. There, a throng of
+shrimp stood out in dark outline against the
+background light, suddenly darting frantically
+away as some great fish with bright spots
+along his sides gave chase. Casting off balls
+of illumination, the shrimp were lost to sight
+in a flare of light.</p>
+<p>But there was little time for such thoughts,
+as this underseas mission concerned the lives
+of nine young people. A sudden storm would
+spell their doom....</p>
+<p>Dave had asked for an hour, and he must
+save the professor from taking so great a risk,
+if possible. No less experienced person&mdash;not
+even Dave&mdash;could safely descend to such depth
+in a diving suit....</p>
+<p>Suddenly he saw the light from the sub&rsquo;s
+porthole, just before him.</p>
+<p>&ldquo;Steady!&rdquo; he said into the mike. &ldquo;Doris&mdash;tell
+them to stop lowering, and swing me to the
+right about twelve feet.&rdquo;</p>
+<div class="pb" id="Page_209">[209]</div>
+<p>Instantly they obeyed his orders and for a
+time, he studied the sub. Then he saw what
+he had sought&mdash;the threaded end of pipe for
+letting in the air. Once again he had his position
+changed. Now he was close to the bit of
+threaded pipe. But the dangling air hose from
+the sub on the surface, still was several feet
+away. More orders.... More moments.... and
+every second counted.... At last the steel ball
+rested on bottom. The sub was six feet
+distant, and now the hose dangled directly before
+his window.</p>
+<p>What Dave hoped to do was to seize the
+screwcap at the end of the hose with the
+pincherlike affairs attached to the outside of
+the steel ball. Then, by twisting his pinchers
+round and round, he would try to attach the
+hose to the sunken submarine.</p>
+<p>Could he do it? His heart sank as the force
+of a wave far above, drew the steel ball off
+the bottom for a moment.</p>
+<p>&ldquo;I&mdash;I&rsquo;ve got to do it! I&rsquo;ve <i>got</i> to,&rdquo; he
+muttered.</p>
+<p>Once again his hand was on the lever. It rose,
+slowly, as the hose before him swayed.</p>
+<p>&ldquo;Back a foot,&rdquo; he called to Doris.</p>
+<div class="pb" id="Page_210">[210]</div>
+<p>Back he slid. &ldquo;Now,&rdquo; he breathed. There was
+the hose and screwcap, and there were his
+pinchers. Swiftly, skillfully, he manipulated
+the lever, and, by a fortunate providence,
+caught the cap just as he should.</p>
+<p>&ldquo;Now,&rdquo; he breathed.</p>
+<p>But again there came that sickening lift and
+swing&mdash;and one crash of his window against the
+sub, would spell his doom.</p>
+<p>Now he was on bottom again. A move&mdash;a
+second move&mdash;then a third&mdash;and he was back
+in position. Now&mdash;</p>
+<p>&ldquo;No,&rdquo; he breathed, desperately, &ldquo;not this
+time.&rdquo;</p>
+<p>For again came that sickening lift.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>In the meantime a coastguard cutter had
+anchored close to the <i>Sea Nymph</i> and an officer
+came aboard.</p>
+<p>&ldquo;I am Major Braden, of the Marines,&rdquo; he
+said, bowing to Doris, Johnny and the professor.
+&ldquo;I&rsquo;m on extraordinary duty just now&mdash;watching
+these waters. I used to be in command
+when we occupied these islands for
+military purposes, and I understand you&rsquo;ve located
+a foreign submarine.&rdquo;</p>
+<div class="pb" id="Page_211">[211]</div>
+<p>&ldquo;And six spies, now held captive on land,&rdquo;
+Johnny added. &ldquo;We took enough maps and
+reports from their hangout, to start a secret
+service all our own!&rdquo;</p>
+<p>&ldquo;Good! Great! A real service to your country,
+young man!&rdquo;</p>
+<p>&ldquo;But the sub&rsquo;s still on bottom,&rdquo; Johnny added,
+&ldquo;and we&rsquo;re trying to raise her now. They&mdash;they&rsquo;ve
+got one of our good friends on board!&rdquo;</p>
+<p>&ldquo;I&rsquo;m sure you&rsquo;ll succeed,&rdquo; exclaimed the
+Major. &ldquo;And when that sub breaks water&mdash;we&rsquo;ll
+have three, six-inch guns trained on her.
+She&rsquo;ll not escape,&rdquo; he concluded a little grimly.</p>
+<p class="center"><span class="gs">* * * * * * * *</span></p><p>For a full quarter-hour, Dave struggled in
+vain to bring the threaded pipe on the sub,
+and the screw-cap at the end of the hose, into
+exact position. At one time he actually turned
+the cap, and felt it catch. But it would not
+turn further.</p>
+<p>&ldquo;Started wrong,&rdquo; he murmured. &ldquo;Threads
+are crossed. Must take it off at once.&rdquo;</p>
+<div class="pb" id="Page_212">[212]</div>
+<p>Ten seconds of struggle and he was back
+where he had started. His heart sank. Should
+he give up? He closed his eyes to think&mdash;and
+saw the professor&rsquo;s frail, kindly face before
+him.</p>
+<p>&ldquo;No!&rdquo; he groaned. &ldquo;I won&rsquo;t give up!&rdquo;</p>
+<p>Slowly, carefully, he maneuvered himself
+into position. The lever rose slowly, and glided
+forward. He gave it a turn. It stuck. Deftly
+he twirled his lever; &rsquo;round and &rsquo;round it spun.</p>
+<p>&ldquo;Now!&rdquo; he breathed. He gave the lever an
+experimental tug. <i>The cap held firm.</i></p>
+<p>&ldquo;Try it!&rdquo; he fairly shouted into his mike.</p>
+<p>Ten seconds later, the hose hanging loosely
+before his window, twisted and writhed like
+a snake. It was filling with air. He watched
+the spot where it joined the pipe on the sub.
+Should bubbles appear, all his work was lost.
+Ten seconds, he watched. No bubbles. Twenty&mdash;thirty&mdash;forty
+seconds. Still no bubbles.</p>
+<p>&ldquo;Hooray!&rdquo; he shouted hoarsely. &ldquo;Hooray!
+We win!&rdquo;</p>
+<p>And from the sunken sub came an answer:</p>
+<p>&ldquo;It is good! We are getting air!&rdquo;</p>
+<p>After having his steel ball moved to a safe
+distance, Dave settled down to watch. Had
+they won? Would the sub really rise?</p>
+<div class="pb" id="Page_213">[213]</div>
+<p>Fifteen long, tense, minutes passed. Then,
+like a giant fish which had been asleep on the
+bottom, the dark bulk before him began to
+stir.</p>
+<p>&ldquo;Thank God!&rdquo; Dave exclaimed, fervently.</p>
+<p>A moment more and the sub rose slowly toward
+the surface. And, like a cattleboy driving
+the cows home at eventide, Dave followed in
+his steel ball.</p>
+<p>True to the Major&rsquo;s promise, powerful lights
+and capable-looking guns were trained on the
+sub when, with a rush, she broke surface. But
+there was no need for that. The members of
+the youthful crew were too glad to escape
+death on the bottom of the sea, to offer any
+resistance to capture.</p>
+<p>The first person to appear above the sub&rsquo;s
+deck was Mildred. Awaiting her in the Tub
+was Johnny, and how he greeted her was a
+sight to behold. Some time later they sat
+on the porch of the Kennedy home&mdash;Dave,
+Doris, Johnny and Mildred.</p>
+<div class="pb" id="Page_214">[214]</div>
+<p>&ldquo;Well, Johnny,&rdquo; said Dave, &ldquo;our work beneath
+the very deep sea is done. We&rsquo;ll collect
+a few specimens&mdash;turtles, crawfish, and bright,
+tropical fish close to the surface&mdash;then hoist
+anchor for New York!&rdquo;</p>
+<p>&ldquo;New York? Where is that?&rdquo; Johnny asked
+dreamily.</p>
+<p>&ldquo;It&rsquo;s an ancient Dutch colony,&rdquo; Dave chuckled.</p>
+<p>&ldquo;Oh, yes! I remember!&rdquo; said Johnny. &ldquo;I
+think I&rsquo;ll not go there, if you folks don&rsquo;t
+mind.&rdquo; He hesitated.</p>
+<p>&ldquo;Mildred tells me she located their motorboat
+while she was in the submarine. Major
+Braden thinks we&rsquo;ve done a brave deed or two
+and put him in a good way to clear up this
+spy business&mdash;so he&rsquo;s going to repay us by
+helping bring the schooner to the surface. But
+of course,&rdquo; he drawled, &ldquo;there will be a lot of
+work to be done after that.&rdquo;</p>
+<p>&ldquo;And you&rsquo;d like to stay and help&rdquo; said Dave.
+&ldquo;I don&rsquo;t blame you. I&rsquo;d like to stay myself.
+Well, old son, all I can say is&mdash;go ahead and
+God bless you!&rdquo;</p>
+<div class="pb" id="Page_215">[215]</div>
+<p>&ldquo;I&rsquo;ll be back in the States in two or three
+months, I guess,&rdquo; said Johnny. &ldquo;I&mdash;I&rsquo;m sort of
+thinking of going to college. College is wonderful
+for just anybody!</p>
+<p>&ldquo;I hope you come back to these waters with
+the steel ball,&rdquo; observed Johnny, after a time.
+&ldquo;I&rsquo;d like to have one good, long, look for old
+Samatan&rsquo;s treasure chest.&rdquo;</p>
+<p>&ldquo;Oh! That?&rdquo; said Dave, with a short laugh.
+&ldquo;Probably just a myth. But if we ever get
+back&mdash;you shall have a try at it, I promise
+you!&rdquo;</p>
+<p>&nbsp;</p>
+<p>&nbsp;</p>
+<h2><span class="small">Transcriber&rsquo;s Note</span></h2>
+<ul><li>Copyright notice provided as in the original printed text&mdash;this e-text is public domain in the country of publication.</li>
+<li>Obvious typographical errors were corrected without comment.</li>
+<li>Dialect and non-standard spellings were not changed.</li>
+</ul>
+
+<p>&nbsp;</p>
+<p>&nbsp;</p>
+<div>*** END OF THE PROJECT GUTENBERG EBOOK 44824 ***</div>
+</body>
+</html>
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