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-<pre>
-
-The Project Gutenberg EBook of The 'Look About You' Nature Study Books,
-Book 3 (of 7), by Thomas W. Hoare
-
-This eBook is for the use of anyone anywhere in the United States and most
-other parts of the world at no cost and with almost no restrictions
-whatsoever. You may copy it, give it away or re-use it under the terms of
-the Project Gutenberg License included with this eBook or online at
-www.gutenberg.org. If you are not located in the United States, you'll have
-to check the laws of the country where you are located before using this ebook.
-
-Title: The 'Look About You' Nature Study Books, Book 3 (of 7)
- Birds, Seed Eaters and Insect Eaters, A Baby Plant, Uncle
- George's Tank, Tadpoles, Frogs
-
-Author: Thomas W. Hoare
-
-Release Date: October 16, 2015 [EBook #50237]
-
-Language: English
-
-Character set encoding: UTF-8
-
-*** START OF THIS PROJECT GUTENBERG EBOOK LOOK ABOUT YOU NATURE STUDY, VOL 3 ***
-
-
-
-
-Produced by Juliet Sutherland, Stephen Hutchson, and the
-Online Distributed Proofreading Team at http://www.pgdp.net
-
-
-
-
-
-
-</pre>
-
-<div id="cover" class="img">
-<img id="coverpage" src="images/cover.jpg" alt="The Look About You Nature Book, No. 3" width="500" height="718" />
-</div>
-<div class="img" id="fig1">
-<img src="images/illus04.jpg" alt="" width="570" height="800" />
-<p class="caption">Birds in Winter</p>
-</div>
-<div class="box">
-<h1><span class="small">The
-<br />&ldquo;LOOK ABOUT YOU&rdquo;</span>
-<br />Nature Study Books</h1>
-<p class="center"><span class="smaller">BY</span>
-<br />THOMAS W. HOARE
-<br /><span class="smaller">TEACHER OF NATURE STUDY
-<br />to the Falkirk School Board and Stirlingshire County Council</span></p>
-<p class="center"><span class="large"><b>BOOK III.</b></span></p>
-<div class="img" id="fig2">
-<img src="images/illus05.jpg" alt="Publisher&rsquo;s Logo" width="200" height="202" />
-</div>
-<p class="center">LONDON: T. C. &amp; E. C. JACK
-<br /><span class="small">16 HENRIETTA STREET, W.C.
-<br />AND EDINBURGH</span></p>
-</div>
-<p class="center small"><i>Printed by M&lsquo;Farlane &amp; Erskine, Edinburgh.</i></p>
-<h2>PREFACE.</h2>
-<p>This little book should be used as a simple guide to
-the practical study of Nature rather than as a mere reader.</p>
-<p>Every lesson herein set down has, during the author&rsquo;s
-many years&rsquo; experience in teaching Nature Study, been
-taught by observation and practice again and again; and
-each time with satisfactory result. The materials
-required for most of the lessons&mdash;whether they be obtained
-from the naturalist-dealer or from the nearest hedge,
-ditch, or pond&mdash;are within everybody&rsquo;s reach.</p>
-<p>There is nothing that appeals to the heart of the
-ordinary child like <i><b>living things</b></i>, be they animal or
-vegetable, and there is no branch of education at the
-present day that bears, in the young mind, such excellent
-fruit as the study of the simple, living things around us.</p>
-<p>Your child is nothing if not curious. He wants to
-understand everything that lives and moves and has its
-being in his bright little world.</p>
-<p>Nature Study involves so many ingenious little deductions,
-that the reasoning powers are almost constantly
-employed, and intelligence grows proportionately. The
-child&rsquo;s powers of observation are stimulated, and his
-memory is cultivated in the way most pleasing to his
-inquiring nature. By dissecting seeds, bulbs, buds, and
-flowers, his hand is trained, and methods expeditious
-and exact are inculcated. By drawing his specimens,
-no matter how roughly or rapidly, his eye is trained
-more thoroughly than any amount of enforced copying
-of stiff, uninteresting models of prisms, cones, etc., ever
-could train it.</p>
-<p>The love of flowers and animals is one of the most
-commendable traits in the disposition of the wondering
-child, and ought to be encouraged above all others.</p>
-<p>It is the author&rsquo;s fondest and most sanguine hope that
-the working out of the exercises, of which this booklet
-is mainly composed, may prove much more of a joy than
-a task, and that the practical knowledge gained thereby
-may tempt his little readers to study further the great
-book of Nature, whose broad pages are ever open to us,
-and whose silent answers to our manifold questions are
-never very difficult to read.</p>
-<p><span class="lr">T. W. H.</span></p>
-<h2>CONTENTS</h2>
-<dl class="toc">
-<dt class="jr small"><span class="jl"><span class="small">LESSON</span></span> <span class="small">PAGE</span></dt>
-<dt><span class="cn">I. </span><a href="#c1">Birds in Winter</a> 7</dt>
-<dt><span class="cn">II. </span><a href="#c2">Seed-Eaters and Insect-Eaters</a> 12</dt>
-<dt><span class="cn">III. </span><a href="#c3">Buds</a> 16</dt>
-<dt><span class="cn">IV. </span><a href="#c4">A Baby Plant</a> 25</dt>
-<dt><span class="cn">V. </span><a href="#c5">How a Plant Grows</a> 30</dt>
-<dt><span class="cn">VI. </span><a href="#c6">More about Seeds</a> 36</dt>
-<dt><span class="cn">VII. </span><a href="#c7">The Horse Pond in Spring</a> 44</dt>
-<dt><span class="cn">VIII. </span><a href="#c8">Uncle George&rsquo;s Tank</a> 49</dt>
-<dt><span class="cn">IX. </span><a href="#c9">Tadpoles</a> 54</dt>
-<dt><span class="cn">X. </span><a href="#c10">Frogs, Toads, and Newts</a> 61</dt>
-<dt><span class="cn">XI. </span><a href="#c11">Underground Stems</a> 66</dt>
-<dt><span class="cn">XII. </span><a href="#c12">Caterpillars</a> 76</dt>
-<dt><span class="cn">XIII. </span><a href="#c13">The White Butterfly</a> 82</dt>
-<dt><span class="cn">XIV. </span><a href="#c14">The Toiling Caddis</a> 88</dt>
-<dt><span class="cn">&nbsp; </span><a href="#c15">Appendix</a> 95</dt>
-</dl>
-<div class="pb" id="Page_7">7</div>
-<h1 title="">&ldquo;LOOK ABOUT YOU.&rdquo;
-<br /><span class="small">BOOK III.</span></h1>
-<h2 id="c1">I.&mdash;BIRDS IN WINTER.</h2>
-<p>&ldquo;When we look out there, it makes us feel thankful
-that we have a nice cosy room to play in and a warm fire
-to sit beside.&rdquo;</p>
-<p>It was Uncle George who spoke. His two nephews,
-Frank and Tom, stood at the window watching the birds
-feeding outside, while Dolly, their little sister, was busy
-with her picture-blocks on the carpet.</p>
-<p>&ldquo;Yes, it is better to be inside in winter,&rdquo; said Frank,
-the elder boy. &ldquo;These poor little birds must have a hard
-time out in the cold all night.&rdquo;</p>
-<p>&ldquo;I should not mind being a bird during the rest of
-the year, though,&rdquo; said little Tom. &ldquo;It must be so jolly
-to be able to fly wherever you like.&rdquo;</p>
-<p>Uncle George smiled, and said, &ldquo;Birds are very happy
-little creatures, Tom, but they have many enemies. Their
-lives are in constant danger. They must always be on
-the look-out for cats, hawks, guns, and cruel boys. Those
-birds that stay with us all the year round have often a
-<span class="pb" id="Page_8">8</span>
-hard fight for life in winter-time. In fact, many of
-them starve to death.</p>
-<p>&ldquo;Most of our birds fly to warmer countries in autumn,
-and come back to us in spring. These miss the frost
-and snow, but a great number of them get drowned
-while crossing the sea. I think, as a little boy, you are
-much better off.</p>
-<p>&ldquo;Let me see; have you put out any food for the
-birds this morning?&rdquo;</p>
-<p>&ldquo;Yes, Uncle George, we have done exactly as you
-told us,&rdquo; said Frank. &ldquo;Mother made a little net, which
-we filled with suet and scraps of meat for the tomtits.
-We hung it on the ivy, quite near the window. We
-also put plenty of crumbs and waste bits from the
-kitchen on the space you cleared for the birds yesterday.&rdquo;</p>
-<p>&ldquo;Very good,&rdquo; said Uncle George, &ldquo;and I see your
-feathered friends are busy in both places.&rdquo;</p>
-<p>He looked out and saw a crowd of birds hopping
-on the frozen lawn round the well-filled dish. The
-little net, which hung just outside the window, was
-alive with hungry tomtits. They pecked eagerly at
-the suet, and chattered their thanks between every
-mouthful.</p>
-<p>&ldquo;What a lot of birds we have to-day,&rdquo; Uncle George
-remarked. &ldquo;Do you know the names of them all,
-boys?&rdquo;</p>
-<p>&ldquo;We know those you pointed out to us yesterday,&rdquo;
-said Frank. &ldquo;There is the chaffinch, the thrush, the
-greenfinch, the blackbird, and the hedge-sparrow, but
-I don&rsquo;t know that one with the bright red breast, black
-velvet head, and grey wings. And there is a new one
-among the tomtits. He has a very long tail, and is
-like a small parrot.&rdquo;</p>
-<div class="pb" id="Page_9">9</div>
-<div class="img" id="fig3">
-<img src="images/illus11.jpg" alt="" width="500" height="729" />
-</div>
-<div class="pb" id="Page_10">10</div>
-<p>&ldquo;Oh,&rdquo; said Uncle George, &ldquo;the first you spoke of is
-the bullfinch. He is so easily tamed that he makes a
-splendid pet. The hen bullfinch is there too, I see.
-She has a dull brown breast, and is not quite so
-pretty as her husband. The bullfinch is very fond of
-berries. If we could get some hawthorn or rowan
-berries, we should have all the bullfinches in the
-district around us. The other bird is the long-tailed
-tit. He is also a very amusing little chap.&rdquo;</p>
-<div class="img" id="fig4">
-<img src="images/illus12.jpg" alt="" width="500" height="360" />
-<p class="caption">Bullfinches.</p>
-</div>
-<p>&ldquo;Why do the tomtits make such a fuss about the
-suet?&rdquo; asked Tom. &ldquo;The bullfinches do not come
-near it.&rdquo;</p>
-<p>&ldquo;That is because the tomtit is a flesh-eater, Tom.
-He lives on insects. The bullfinch feeds on berries
-<span class="pb" id="Page_11">11</span>
-and seeds. He is also blamed for eating the young
-buds of fruit-trees in spring-time, but I am not quite
-sure that he does this.&rdquo;</p>
-<p>&ldquo;Where are all the insects in winter, Uncle
-George?&rdquo; asked Frank.</p>
-<p>&ldquo;Well, most of them are buried deep in the ground.
-Some of them are tucked up in warm cases, and hidden
-in the chinks of trees and walls.&rdquo;</p>
-<p>&ldquo;Then why don&rsquo;t the birds that feed on insects
-search those trees and walls for them,&rdquo; Frank asked.</p>
-<p>&ldquo;So the birds do, but the sleeping insects are very
-hard to find. The cases which hold them are often
-coloured exactly like the tree or wall which they are
-fixed to; so that even the sharp eyes of a hungry bird
-cannot see them.&rdquo;</p>
-<h3>Exercises on Lesson I.</h3>
-<dl class="ex"><dt>1. Write out the names of all the wild birds you have seen.</dt>
-<dt>2. Some of these we do not see in winter. How is this?</dt>
-<dt>3. Why should we remember the birds in winter-time?</dt>
-<dt>4. Describe the robin. How does he differ from the bullfinch?</dt></dl>
-<div class="pb" id="Page_12">12</div>
-<h2 id="c2">II.&mdash;SEED-EATERS AND INSECT-EATERS.</h2>
-<p>The snow did not go away for some days. While
-it lasted, Frank and Tom watched the birds very
-closely. They learned many new and curious things
-about them.</p>
-<p>The sparrows and robins had grown so tame that
-they would fly right up to the window-sill, and eat the
-crumbs and seeds that were placed there for them;
-while the tomtits paid great attention to the little net
-bag that hung quite close
-to the window. So long
-as they stood back a
-short distance from the
-window, the two boys
-could watch the funny
-tricks of these hungry
-little visitors.</p>
-<p>Amongst other things,
-they learned to tell a
-seed-eating bird from one
-that feeds on insects.</p>
-<div class="img" id="fig5">
-<img src="images/illus14.jpg" alt="" width="500" height="568" />
-<p class="caption">Tomtits.</p>
-</div>
-<p>Seed-eating birds, as
-their uncle told them,
-have short, stout, hard
-bills, just the thing for shelling seeds. The insect-eaters
-have longer and more slender bills; while birds
-that live upon both seeds and insects have bills hard
-<span class="pb" id="Page_13">13</span>
-enough to shell seeds and yet long and sharp enough
-to pick insects out of their hiding-places.</p>
-<p>So many birds came to the feast, that Uncle George
-cleared the snow from another part of the lawn and
-spread some dry ashes upon it. Upon one patch he
-scattered seeds and crumbs, and on the other he placed
-a large flat dish.</p>
-<p>In this dish were put all sorts of waste scraps from
-the kitchen, such as bones,
-potatoes, and pieces of
-meat. Uncle George did
-this so that the boys could
-tell flesh-eating birds from
-those that lived upon
-seeds.</p>
-<div class="img" id="fig6">
-<img src="images/illus15.jpg" alt="" width="400" height="333" />
-<p class="caption">Starling.</p>
-</div>
-<p>The starlings came to
-the dish first, and fought
-among themselves for the
-food, although there was
-much more than enough for them all.</p>
-<p>Then came a few rooks, who walked about the
-dish in quite a lordly way. Every now and again one
-of them would seize a huge crust of bread or a potato
-in his clumsy bill and fly with it a short distance away.
-The starlings, thrushes, and blackbirds hopped nimbly
-about, picking up a choice morsel here and there.</p>
-<p>The new patch was often crowded with finches of
-all kinds. The boys noticed that many of the birds fed
-at both places. Among these were sparrows, robins,
-chaffinches, thrushes, and starlings. These birds, their
-uncle explained to them, fed on a mixed food of insects,
-seeds, and fruits.</p>
-<div class="pb" id="Page_14">14</div>
-<p>It amused them very much to watch how the rooks
-and jackdaws always dragged the food away from the
-dish, as if they were stealing it; while now and then a
-blackbird would fly away with a loud chatter, as if he
-had been suddenly found out whilst doing something
-very wrong.</p>
-<p>&ldquo;These birds,&rdquo; said Uncle George, &ldquo;are looked
-upon as enemies by farmers and gardeners. They are
-scared out of our fields and gardens by every possible
-means. That is what makes them steal even the food
-that is given to them.&rdquo;</p>
-<div class="img" id="fig7">
-<img src="images/illus16.jpg" alt="" width="500" height="277" />
-<p class="caption">Rook.</p>
-</div>
-<p>&ldquo;But they pick the newly-sown seeds out of the
-ground, and steal the fruit when it is ripe,&rdquo; said Frank.
-&ldquo;That is what the gardener says.&rdquo;</p>
-<p>&ldquo;If the gardener only knew how much they help
-him, by eating up the grubs and beetles that damage
-his plants, he would not grudge them a few seeds and
-berries, Frank,&rdquo; Uncle George replied. &ldquo;The rook is
-<span class="pb" id="Page_15">15</span>
-one of the farmer&rsquo;s best friends; and if it were not for
-thrushes, starlings, blackbirds, and such insect-eating
-birds, our gardens would be overrun with insects. If
-these insects were allowed to increase, we should not
-be able to grow anything. Even the sparrow is the
-gardener&rsquo;s friend. He eats the caterpillars that would
-spoil our fruit trees and bushes.&rdquo;</p>
-<h3>Exercises on Lesson II.</h3>
-<dl class="ex"><dt>1. Why do we put out suet and scraps of meat for certain birds in winter?</dt>
-<dt>2. How can you tell a flesh-eating from an insect-eating bird?</dt>
-<dt>3. Write down the names of all the birds which belong to the crow family.</dt>
-<dt>4. What makes the jackdaw steal all his food?</dt>
-<dt>5. Why are jackdaws, rooks, sparrows, starlings, and blackbirds said to be &ldquo;the farmer&rsquo;s friends&rdquo;?</dt></dl>
-<div class="pb" id="Page_16">16</div>
-<h2 id="c3">III.&mdash;BUDS.</h2>
-<p>Uncle George and the two boys had been for a long
-walk. They brought home a lot of twigs which they
-had cut from trees at the roadside.</p>
-<p>Uncle George placed some of these twigs in bottles
-filled with water. These bottles were placed in the
-window, so that they could get plenty of sunlight. The
-rest of the twigs were laid upon the table.</p>
-<p>&ldquo;Now, boys,&rdquo; said Uncle George, &ldquo;we are going to
-find out what buds are. Here is a twig of the horse-chestnut
-tree, and here is one of the beech tree. Do
-you notice any difference between them?&rdquo;</p>
-<p>&ldquo;Oh, yes,&rdquo; said Frank, &ldquo;they are very different. The
-beech buds are longer.&rdquo;</p>
-<p>&ldquo;Anything else?&rdquo; his uncle asked.</p>
-<p>&ldquo;The horse-chestnut buds have sticky stuff all over
-them,&rdquo; said Tom.</p>
-<p>&ldquo;Quite right,&rdquo; said Uncle George. &ldquo;On the beech
-twig the buds are placed singly on opposite sides. On
-the horse-chestnut twig the buds are in pairs.&rdquo;</p>
-<p>Then Uncle George cut one of the buds through
-with his knife, and they saw that a great number of
-thick scales were folded round a little green thing in
-the centre. They saw also a mass of woolly stuff between
-the scales and the little green object.</p>
-<p>Uncle George gave each of the boys a twig, and
-showed them how to take the scales off the top bud
-<span class="pb" id="Page_17">17</span>
-with a large needle. The outside scales were not easily
-removed. They were so sticky&mdash;they stuck to everything
-that touched them, and soon the boys&rsquo; fingers
-were covered with the sticky stuff. As they went on
-with their work, they found out that the inner scales
-were not sticky. At last they got all the scales off, and
-there was nothing left but a tiny woolly mass. On
-teasing out, this woolly bundle was found to be a little
-branch bearing small leaves. Every part of it was
-covered with wool.</p>
-<div class="img" id="fig8">
-<img src="images/illus19.jpg" alt="" width="500" height="442" />
-<p class="caption">Twigs of Beech and Chestnut, showing Buds.</p>
-</div>
-<p>&ldquo;Now,&rdquo; said Uncle George, &ldquo;you can perhaps tell
-me what a bud is.&rdquo;</p>
-<p>&ldquo;It is just a little baby branch, snugly tucked up in
-a tiny blanket and well covered over with many scale-leaves,&rdquo;
-said Frank.</p>
-<p>&ldquo;Very good,&rdquo; said Uncle George. &ldquo;Now tell me
-<span class="pb" id="Page_18">18</span>
-why it is tucked up in this warm blanket, and perhaps
-Tom can tell us what the sticky stuff on the outer
-scales is for.&rdquo;</p>
-<p>&ldquo;I am sure I cannot tell,&rdquo; said Frank.</p>
-<p>&ldquo;Just think,&rdquo; said his uncle kindly. &ldquo;Why did
-you call it a <i><b>baby</b></i> branch? Is it because it is so small,
-or because it is so snugly wrapped up? Why are babies
-wrapped up in soft warm clothing?&rdquo;</p>
-<p>&ldquo;Oh, I know now,&rdquo; said Frank, &ldquo;The woolly stuff is
-to keep out the winter cold.&rdquo;</p>
-<p>&ldquo;And the sticky stuff on the outside,&rdquo; said Tom,
-&ldquo;must be for keeping out the rain.&rdquo;</p>
-<p>&ldquo;You are both right,&rdquo; said Uncle George. &ldquo;Buds are
-formed in autumn and early winter. They are, as you
-have seen, very tender little things. Frost or wet
-would kill them. But rolled up in soft woolly clothing,
-covered in with many thick scale-leaves, and made quite
-waterproof by a thick coat of the sticky stuff, they do
-not fear the cold.</p>
-<p>&ldquo;If you look at your twigs again, you will find that
-in taking off the scales you have left a thick ring of
-marks right round the twig.</p>
-<p>&ldquo;Now, if you look down the twig, you will notice
-another ring of such marks. These are the scale-marks
-of last year&rsquo;s bud. The part of the twig
-in between these two ring marks is a year&rsquo;s
-growth.&rdquo;</p>
-<p>&ldquo;There is a third ring on mine farther down the
-stem,&rdquo; said Frank.</p>
-<p>&ldquo;Yes, and another farther down still,&rdquo; said Uncle
-George. &ldquo;These are the bud marks of former years.
-Let us measure the distance between them, for in this
-way we can tell the kind of summers we have had in
-past years.</p>
-<div class="img" id="fig9">
-<img src="images/illus21.jpg" alt="" width="579" height="801" />
-<p class="caption">Hedge and Trees in early Spring</p>
-</div>
-<div class="img" id="fig10">
-<img src="images/illus23.jpg" alt="" width="571" height="799" />
-<p class="caption">Plants protected by Thorns and Prickles</p>
-</div>
-<div class="pb" id="Page_23">23</div>
-<p>&ldquo;Last year&rsquo;s growth, you see, is two inches. The
-growth of the year before is three inches, and the one
-beneath that is four and a half inches. This tells us
-that there was very little sunshine during last summer
-or the summer before, and that three years ago there
-was a warm summer, causing much
-growth.&rdquo;</p>
-<p>&ldquo;I see some other strange marks
-on the twig,&rdquo; said Tom.</p>
-<p>&ldquo;Oh, you mean the horse-shoe
-marks. These are the scars left by
-the big green leaves which fell off
-in autumn. You will find one of
-these curious horse-shoe marks
-under each bud.</p>
-<div class="img" id="fig11">
-<img src="images/illus25.jpg" alt="" width="321" height="500" />
-<p class="caption">Hawthorn Twigs.</p>
-</div>
-<p>&ldquo;Here is a hawthorn twig. I
-brought it to let you see another
-way in which plants protect their
-buds. In the hawthorn the buds
-usually occur in pairs together. Between each pair of
-buds there is a long sharp thorn.</p>
-<p>&ldquo;The reason why every pair of buds is guarded in
-this way is very clear. The horse-chestnut and beech
-have tall, stout stems, which rear up their branches
-far out of the reach of grazing animals. The hawthorn
-is a low growing tree. Its branches are within easy
-reach, and its tender buds would be nipped off by
-sheep and cattle if it were not for these sharp thorns.</p>
-<p>&ldquo;The thorns also prevent the buds from being
-knocked off by anything rubbing against the hawthorn
-<span class="pb" id="Page_24">24</span>
-hedge. You will notice that each thorn is very much
-longer than the buds beside it. These thorns can give
-a very cruel prick, as every boy knows who has tried
-to cut a twig from the hawthorn hedge.</p>
-<p>&ldquo;By and by we shall see that there are many plants
-which arm themselves against animals in this way.&rdquo;</p>
-<h3>Exercises on Lesson III.</h3>
-<dl class="ex"><dt>1. Take in twigs with buds on them in December. Place them in water, and watch them from day to day.</dt>
-<dt>2. Select one bud, and make a drawing of it every third day from the time it begins to open. Keep your drawings.</dt>
-<dt>3. How are buds protected? (1) from cold; (2) from animals.</dt>
-<dt>4. What causes the &ldquo;horse-shoe&rdquo; marks on horse-chestnut twigs?</dt>
-<dt>5. Make a drawing of a small beech twig, showing buds and leaf-scars.</dt></dl>
-<div class="pb" id="Page_25">25</div>
-<h2 id="c4">IV.&mdash;A BABY PLANT.</h2>
-<p>&ldquo;To-day,&rdquo; said Uncle George, &ldquo;we are going to try
-to find out something about seeds.&rdquo; And he placed
-upon the table a saucerful of beans which had been
-soaking in water for two days.</p>
-<p>&ldquo;First let us look at the seeds as they are when
-we get them from the shop,&rdquo; he said, laying a handful
-of hard, wrinkled beans upon the table.</p>
-<p>&ldquo;They are as hard as stones, and very much
-smaller than those we soaked,&rdquo; said Frank.</p>
-<p>&ldquo;Yes, that is one thing we have learned about
-them already. Seeds take in water and swell greatly.&rdquo;
-As he spoke, Uncle George gave Frank, Tom, and
-Dolly each a small knife and a needle mounted in a
-handle. He then laid a small magnifying glass on the
-table.</p>
-<p>&ldquo;Take a soaked bean and look at it well,&rdquo; he said.
-&ldquo;First we will look at the outside of it, then we will
-see what it has inside.&rdquo;</p>
-<p>&ldquo;My bean is covered all over with a smooth skin,&rdquo;
-said Dolly.</p>
-<p>&ldquo;And there is a long black mark on one side of it,&rdquo;
-Tom added.</p>
-<p>&ldquo;Come on, Frank,&rdquo; said his uncle, &ldquo;haven&rsquo;t you
-got something to say.&rdquo;</p>
-<p>&ldquo;It is sort of kidney-shaped,&rdquo; said Frank.</p>
-<p>&ldquo;Nothing more?&rdquo;</p>
-<div class="pb" id="Page_26">26</div>
-<p>Frank shook his head.</p>
-<p>&ldquo;Squeeze it,&rdquo; said Uncle George, &ldquo;and tell me what
-you see.&rdquo;</p>
-<p>&ldquo;Oh, there is water oozing out of a little hole at
-the end of the black mark,&rdquo; said Frank.</p>
-<p>&ldquo;That shows us that the seed is not quite covered
-by its skin,&rdquo; said their uncle. &ldquo;That little hole is
-there to allow a tiny root to grow out.</p>
-<p>&ldquo;Now let us remove the skin, or skins rather, for
-there are two of them. Begin as far away from the
-black mark as you can. You see that the outer skin
-is tough like leather, while the inner one is soft and
-silky. Now, if you pull the skins off gently, you will
-find something like a stout little root pointing towards
-the little hole you have already noticed. If you look
-at the edge of the seed you will notice a thin line or
-crack. Putting the knife into this crack, we find that
-the seed consists chiefly of two large, flat, white parts
-or lobes, with a very small object in between them.
-Let us remove one of these white masses, and have a
-look at this small object with the glass.&rdquo;</p>
-<div class="img" id="fig12">
-<img src="images/illus28.jpg" alt="" width="500" height="199" />
-<p class="caption">Seed of Runner Bean.<br />(1) outside; (2) inside; (3) baby plant, enlarged.<br /><i>a</i>, shoot; <i>b</i>, root; <i>c</i>, seed coat or skin; <i>d</i>, junction of seed-leaves.</p>
-</div>
-<div class="pb" id="Page_27">27</div>
-<p>Each of the children had a look through the glass
-in turn.</p>
-<p>&ldquo;Why,&rdquo; said Tom, &ldquo;it is very like what we found
-inside the horse-chestnut bud. I can see two tiny
-leaves.&rdquo;</p>
-<p>&ldquo;Remove the little object on the point of your
-needle and look at it again,&rdquo; said Uncle George. &ldquo;It
-has got something that your little horse-chestnut shoot
-did not have, I think.&rdquo;</p>
-<p>&ldquo;There is a little thing like a root,&rdquo; said Tom.</p>
-<p>&ldquo;It is a little plant with a very fat little root,&rdquo;
-said Frank.</p>
-<p>&ldquo;That is just what it is,&rdquo; said his uncle.</p>
-<p>&ldquo;Has every seed got a little plant inside it, Uncle
-George?&rdquo; Dolly asked.</p>
-<p>&ldquo;Every seed, Dolly, no matter how small.&rdquo;</p>
-<p>Uncle George split up one of the hard seeds that
-had not been soaked, and showed them a little plant
-of the same kind inside; but it was so hard and brittle
-that he could crumble it up into powder between his
-fingers.</p>
-<p>&ldquo;And what are the two large white lobes for?&rdquo;
-asked Frank.</p>
-<p>&ldquo;These are the seed-leaves. They are stores of
-plant-food. The young plant is fed by these until its
-root grows far down into the soil and its shoot grows
-high up into the air&mdash;until it is old enough and strong
-enough to find food for itself, in fact.</p>
-<p>&ldquo;In the bud, the little shoot is fed by the sap of
-the mother-plant. Here, in the seed, we have a baby
-plant wrapped up in two coats, one thick and leathery
-and the other soft and warm; and, in place of a large
-<span class="pb" id="Page_28">28</span>
-feeding-bottle, there are two huge masses of plant-food
-wrapped up with it.&rdquo;</p>
-<p>&ldquo;Why do we put seeds in the ground to make
-them grow?&rdquo; asked Frank.</p>
-<p>&ldquo;A seed requires three things to make it grow.
-These three things are&mdash;<i>water</i>, <i>air</i>, and <i>warmth</i>. We
-can grow seeds without soil at all if we give them
-these three things. But if either water, air, or warmth
-be wanting, your seeds cannot grow.&rdquo;</p>
-<p>&ldquo;That is why seeds won&rsquo;t grow outside in winter,
-then,&rdquo; said Frank.</p>
-<p>&ldquo;That is the reason,&rdquo; his uncle answered. &ldquo;In
-winter there is not enough heat to make seeds grow.
-If you sow seeds in a pot of dry soil in summer, and
-do not give them water, they will not grow.&rdquo;</p>
-<p>&ldquo;I think a seed is a most wonderful thing,&rdquo; said
-Tom.</p>
-<p>&ldquo;It is,&rdquo; said Uncle George, &ldquo;wonderful indeed. The
-most wonderful thing about it is that there is life in it&mdash;sleeping
-life, awaiting these three things I have told
-you about.</p>
-<p>&ldquo;Dried up, and as hard as a stone, it will keep for
-years; but when air, warmth, and moisture are given
-it, it springs into life and becomes a plant, which
-grows, produces seeds, and dies.</p>
-<p>&ldquo;Now, we will plant the rest of the soaked beans&mdash;not
-in ground, for I want to let you see that the seed-leaves
-contain far more food than the tiny plant requires
-to feed it until it is old enough to take care of
-itself.</p>
-<p>&ldquo;We will plant these seeds in damp sawdust, from
-which they can get no food. We will see that they
-<span class="pb" id="Page_29">29</span>
-get water, air, and warmth, but no food except what
-is in the big seed-leaves.&rdquo;</p>
-<p>Uncle George then got a box filled with sawdust,
-and placed the beans in it. He arranged them in
-different ways. Some beans he placed edgeways, others
-longways, others lying on their sides.</p>
-<p>&ldquo;I am doing this,&rdquo; he said, &ldquo;to show you that, no
-matter how a seed happens to lie in the soil, its root
-will always grow down and its shoot will always
-grow up.&rdquo;</p>
-<p>He then covered them up with a thin layer of sawdust,
-and placed the box in a warm corner of the
-kitchen. The boys promised to water the seeds every
-day, and to watch them as they grew.</p>
-<h3>Exercises on Lesson IV.</h3>
-<dl class="ex"><dt>1. Soak some seeds of broad bean (or pea) and maize (or wheat) for twenty-four hours. Plant some in damp sawdust.</dt>
-<dt>2. What do you see when you open a bean seed?</dt>
-<dt>3. Pick off the little baby plant, and try to draw it big.</dt>
-<dt>4. Cut down through the centre (flat side) of a maize seed. Try to make out the little seed plant and the food store.</dt>
-<dt>5. Every third day dig up a growing seed and draw it. Put the date beneath each drawing. Keep your drawings carefully.</dt></dl>
-<div class="pb" id="Page_30">30</div>
-<h2 id="c5">V.&mdash;HOW A PLANT GROWS.</h2>
-<p>Every day the boys watched their buds and seeds
-bursting into life.</p>
-<p>It was slow work; but, as winter passed slowly away
-and they were able to go out for walks more often, they
-had much to amuse them. They brought home all sorts
-of curious things, and soon had quite a host of living
-things to watch.</p>
-<div class="img" id="fig13">
-<img src="images/illus32.jpg" alt="" width="500" height="363" />
-<p class="caption">Four Stages in the opening of Horse-Chestnut Buds.</p>
-</div>
-<p>Three weeks passed before the horse-chestnut buds
-showed any signs of opening. By this time they had
-swelled out very much. First the sticky scales moved
-<span class="pb" id="Page_31">31</span>
-apart, then folded themselves backwards out of the way,
-and at last fell off altogether.</p>
-<p>This moving apart of the scales was caused by the
-shoot or branch inside the bud, which was growing
-rapidly.</p>
-<p>Before the scales fell off, it had burst its way through
-them. It was now a large mass of thick leaves all
-folded together, and covered all over with a sort of
-wool.</p>
-<p>Soon these thick leaves moved apart, the woolly
-covering came off, and what a month ago was a little
-woolly body, so tiny that it had to be picked apart with
-a needle, was now a large stout branch, smooth and
-green, and bearing beautiful broad leaves.</p>
-<p>Some of the buds brought forth small clusters of
-little green balls. These the boys at first thought were
-berries, but they afterwards found out that they were
-flowers.</p>
-<p>After all the buds had quite opened out, they began
-slowly to wither. Uncle George told them the reason
-of this. It was because the branch had been cut away
-from the mother-tree, which drew its food from the soil
-and air.</p>
-<p>The growing buds had used up all the sap which
-the cut branch contained.</p>
-<p>But by the time their twigs had withered, the buds
-outside had began to open&mdash;for spring was now at
-hand.</p>
-<p>The hedges were becoming greener every day. The
-birds were heard singing in the woods, and little
-green shoots were springing up everywhere under foot.</p>
-<p>Frank and Tom brought home opening buds of all
-<span class="pb" id="Page_32">32</span>
-kinds, and watched the hedges and trees as they walked
-daily to school.</p>
-<p>Two of the bean seeds were dug up out of the sawdust
-every second or third day. In this way the boys
-were able to see exactly how a bean plant grows from
-seed.</p>
-<div class="img" id="fig14">
-<img src="images/illus34.jpg" alt="" width="500" height="471" />
-<p class="caption">Stages in the Germination of the Runner Bean.<br />In 1 and 4, inside of seed, growing baby plant is shown.</p>
-</div>
-<p>First the seed swells out; then the skin bursts, and
-the little plant in between the two masses of plant-food
-begins to grow.</p>
-<p>The root always grows down straight. The little
-shoot always grows upwards.</p>
-<div class="pb" id="Page_33">33</div>
-<p>After the root has grown about an inch it begins
-to branch; and in about two weeks these branch
-branch-roots are searching the soil for food all around
-the main root.</p>
-<p>The shoot meanwhile is growing in length and
-thickness. It remains folded up until it reaches the
-air and light. Then its leaves open out and turn from
-a creamy colour to bright green.</p>
-<p>One small box of seeds was placed in a dark cupboard.
-These beans grew much more quickly than
-those grown in the light; but they were pale, lank, and
-sickly. They never turned green.</p>
-<p>From this the boys learned that the green colour of
-leaves and stems is due to the action of light.</p>
-<p>Uncle George took a few grains of wheat and
-placed them upon wet blotting-paper. A tumbler
-turned upside down was placed over them.</p>
-<p>In a few days the children saw that a few small
-roots had grown out from the end of each grain.</p>
-<p>When these roots had grown to about half an inch
-in length, great tufts of long slender hairs sprang out
-all round them near their tips. These, their uncle told
-them, were &ldquo;root-hairs.&rdquo;</p>
-<p>The root-hairs of a plant are so fine that they are
-always torn off when we dig or pull a plant out of the
-ground. It is by means of these slender root-hairs
-that the plant is able to suck water out of the soil;
-and this water always contains a very little plant-food
-in it.</p>
-<p>The boys noticed that the wheat grain did not
-sprout in the same way as the bean seed. Instead of
-one stout little root, three usually came out. The
-<span class="pb" id="Page_34">34</span>
-tiny shoot seemed to grow from the <i>outside</i> of the
-grain, and the two large masses of plant-food were
-missing.</p>
-<div class="img" id="fig15">
-<img src="images/illus36.jpg" alt="" width="344" height="500" />
-<p class="caption">Stages in the Germination of Wheat.</p>
-</div>
-<p>Some wheat seeds were soaked
-and cut down the middle. With
-the aid of the glass, the boys
-saw that in the wheat seed the
-baby plant is attached to <i>one</i>
-large mass of plant-food, made
-up of flour with an outside layer
-of bran.</p>
-<p>Their uncle then told them
-that all the flowering plants in
-the world are of two great
-families, namely, those whose
-seeds have only one food store,
-like the wheat grain, and those
-whose seeds have two, like the bean.</p>
-<h3>Exercises on Lesson V.</h3>
-<dl class="ex"><dt>1. Explain all that happens when a horse-chestnut bud opens.</dt>
-<dt>2. Why do the buds which you force indoors wither after they open?</dt>
-<dt>3. What changes come over your bean seeds as they grow?</dt>
-<dt>4. Do the young plants draw any food from the sawdust? If not, what feeds them?</dt>
-<dt>5. What three things does a seed need in order to start growing?</dt></dl>
-<div class="pb" id="Page_35">35</div>
-<div class="img" id="fig16">
-<img src="images/illus37.jpg" alt="" width="579" height="799" />
-<dl class="undent"><dt>1. Magnified sections of Maize and Wheat Seeds, showing Young Plant, Food Store, etc.</dt>
-<dt>2. Germination of Maize.</dt>
-<dt>3. Maize growing in Sawdust.</dt>
-<dt>4. Maize growing in Tap Water.</dt>
-<dt>5. Bean growing in Bottle over Water.</dt></dl>
-</div>
-<div class="pb" id="Page_36">36</div>
-<h2 id="c6">VI.&mdash;MORE ABOUT SEEDS.</h2>
-<p>It was raining in torrents outside, and the boys
-were a little upset inside, for it was Saturday. They
-always looked forward to Saturday, for it was their
-great rambling day.</p>
-<p>&ldquo;I&rsquo;m afraid we can&rsquo;t get out to-day,&rdquo; said Frank,
-sadly.</p>
-<p>&ldquo;I&rsquo;m afraid not,&rdquo; said his uncle. &ldquo;But that is no
-reason why we should sulk. We have those maize
-seeds to look over, you know, and by the time we
-have done that perhaps the rain will have stopped.&rdquo;</p>
-<p>While Frank and Tom were bringing the boxes of
-seeds, Uncle George and Dolly were busy getting out
-knives, glasses, mounted needles, and the books they
-made their notes and sketches in.</p>
-<p>There were four small boxes in all. Each box had
-been sown with maize or Indian corn at times a week
-apart, so that the plants in one box were five weeks
-old, in the next four weeks old, and so on.</p>
-<p>&ldquo;We will begin as we did with the bean. Let us
-cut the seed open first.&rdquo; As he spoke, Uncle George
-laid some soaked maize seeds on the table.</p>
-<p>&ldquo;If you look at these seeds carefully, you will
-notice a large mark on one of the flat sides of each.&rdquo;</p>
-<p>&ldquo;I see it,&rdquo; said Frank. &ldquo;It is shaped something
-like a cone, and its broad end is at the narrow end of
-the seed.&rdquo;</p>
-<div class="pb" id="Page_37">37</div>
-<p>&ldquo;It is lighter in colour than the rest of the seed,&rdquo;
-said Tom.</p>
-<p>&ldquo;You are both right,&rdquo; said their uncle. &ldquo;Now I want
-you to cut the seed longways, right down through
-the middle of that mark. Then use your glass, and
-tell me what you see.</p>
-<p>&ldquo;Look closely,&rdquo; said Uncle George, &ldquo;first into one
-half and then into the other.&rdquo;</p>
-<p>&ldquo;Oh, I see something like a tiny plant,&rdquo; said Tom.
-&ldquo;It is shut off from a great mass of what looks like
-plant-food, just like our wheat grains.&rdquo;</p>
-<p>Tom made a rough sketch of it, and showed it to
-his uncle.</p>
-<p>&ldquo;That is the baby plant, and the great mass above
-it is plant-food,&rdquo; said his uncle.</p>
-<p>&ldquo;Come on, Frank. Don&rsquo;t let Tom do all the finding
-out. What have you to say?&rdquo;</p>
-<p>&ldquo;The maize seed has only one mass of plant-food,
-and it does not seem to have two seed coats like the
-bean,&rdquo; Tom replied.</p>
-<p>&ldquo;You are right,&rdquo; said Uncle George; &ldquo;but if you
-look again you will see that there is a thick layer of
-food stuff outside, which is of a different colour from
-the rest.</p>
-<p>&ldquo;This is like the bran layer which is round the
-food store in the wheat grain.</p>
-<p>&ldquo;This food store is starch, or, as we call it,
-<i>flour</i>.</p>
-<p>&ldquo;Now, let us look at the growing seeds. We will
-take a few seeds out of each box and see how they
-differ.</p>
-<p>&ldquo;The seeds in this box, the last sown, are just a
-<span class="pb" id="Page_38">38</span>
-week old. You see the root and shoot are just
-beginning to show.</p>
-<p>&ldquo;Make a sketch, drawing it as large as you can,
-and write under it, &lsquo;Maize seed after a week&rsquo;s growth.&rsquo;</p>
-<p>&ldquo;Do the same with a seed from each of the other
-three boxes, and when you have drawn them all, tell
-me of any differences you notice between the growth
-of maize and that of the bean.&rdquo;</p>
-<p>&ldquo;They do not grow in the same way at all,&rdquo; said
-Frank, as he drew his last sketch. &ldquo;In the maize
-seed the baby plant seems to be stuck on to one of
-the flat sides of the seed.&rdquo;</p>
-<p>&ldquo;What about the roots, Frank?&rdquo;</p>
-<p>&ldquo;Oh yes, I see that,&rdquo; Frank went on. &ldquo;The root
-branches out all at once in the maize seed. In some
-of these seeds the main root has scarcely grown at all.
-Their roots are all branch-roots.&rdquo;</p>
-<p>&ldquo;And, in the oldest plants, one great leaf rolls
-round the shoot and hides it,&rdquo; said Tom. &ldquo;In the
-bean shoot we saw two leaves quite plainly.&rdquo;</p>
-<p>&ldquo;Quite right, Tom. Now, boys, compare your drawings
-with those you made of the bean. I will grow a
-maize and a bean seed together, so that you can watch
-the growth of both, and compare them day by day.&rdquo;</p>
-<p>Uncle George then got an empty pickle bottle, and
-poured some water into it. Then he took a soaked
-bean seed, and, having run a thread through it with a
-needle, he hung it inside the bottle. He then corked
-the bottle, and placed it in the window.</p>
-<p>He next took an old lamp chimney, and made a roll
-of blotting-paper to fit the inside of it. This roll of
-paper was stuffed with moss. A few maize seeds were
-pushed in between the glass and the paper, and the
-lamp chimney was placed in a saucerful of water in the
-window.</p>
-<div class="img" id="fig17">
-<img src="images/illus42.jpg" alt="" width="581" height="800" />
-<p class="caption">Plants that grow like Maize.<br />These plants have but one food mass in each of their seeds.</p>
-</div>
-<div class="img" id="fig18">
-<img src="images/illus43.jpg" alt="" width="576" height="800" />
-<p class="caption">The Horse Pond in Spring.</p>
-</div>
-<div class="pb" id="Page_43">43</div>
-<p>&ldquo;Now, boys,&rdquo; said Uncle George, &ldquo;I want you to
-watch these seeds every day. If you do so, you will
-learn how a seed grows into a plant; and you will learn
-this not from me, but from the plant itself.&rdquo;</p>
-<p>Uncle George filled a wide bottle with water from
-the tap, and fixed one of the five-week-old maize plants
-in it by means of a split cork.</p>
-<p>&ldquo;I want you to watch this plant growing,&rdquo; he said,
-as he placed the bottle in the window. &ldquo;You ought to
-draw it once a week. Most people think that plants
-draw their food chiefly from the soil. This is a great
-mistake.</p>
-<p>&ldquo;Plants take most of their food from the air, as
-you will see if you watch the growth of this plant. Of
-course, it has a good food store in the seed; but I
-think you will be surprised at the growth it makes
-from that food store, the bottle of tap water, and
-the air.&rdquo;</p>
-<h3>Exercises on Lesson VI.</h3>
-<dl class="ex"><dt>1. Make sketches of a soaked bean and of a soaked maize seed.</dt>
-<dt>2. Place a few beans (or peas) and a few maize (or wheat) seeds in a box of damp sawdust. Water regularly. After a week dig up a seed of each and draw them.</dt>
-<dt>3. Dig up a seed of each at intervals of two weeks, three weeks, and four weeks; draw and compare them.</dt>
-<dt>4. Sow in a box of sawdust a few of each of the following&mdash;date stones, orange pips, walnuts, chestnuts. Keep the box in a <i>warm</i> place, and watch how these seeds grow.</dt></dl>
-<div class="pb" id="Page_44">44</div>
-<h2 id="c7">VII.&mdash;THE HORSE POND IN SPRING.</h2>
-<p>When Frank and Tom came home from school one
-afternoon, they found their uncle very busy finishing
-a net he had made of green gauze.</p>
-<p>It had the shape of a shallow bag, and was fixed
-to a stout wire ring. This ring was fastened to a
-walking-stick with a piece of strong string.</p>
-<p>On the table there were three wide glass jars, each
-with a piece of cord
-tied round the neck to
-serve as a handle.</p>
-<p>&ldquo;Now,&rdquo; said Uncle
-George, as he finished
-tying the net to the
-stick, &ldquo;now we are all
-ready for a visit to that
-pond of yours.&rdquo;</p>
-<div class="img" id="fig19">
-<img src="images/illus46.jpg" alt="" width="500" height="446" />
-<p class="caption">Pond-Net and Glass Jars.</p>
-</div>
-<p>The pond was about
-half a mile away, in the
-corner of a field near a
-wood. A small stream
-ran out of it, and joined a larger one a short distance
-away. The last time the boys had seen this pond it
-was covered with ice, and they had a merry time skating
-upon it. When they reached it on this afternoon,
-it looked quite different. The grass around its banks
-was fresh and green, and rushes were peeping up
-through the water.</p>
-<div class="pb" id="Page_45">45</div>
-<p>&ldquo;Listen!&rdquo; said Uncle George.</p>
-<p>&ldquo;<i>Croak, croak, cr-roak</i>&rdquo; came from beyond the
-rushes, while here and there a little head would bob
-up and down in the water.</p>
-<div class="img" id="fig20">
-<img src="images/illus47.jpg" alt="" width="500" height="653" />
-<p class="caption">Frog and Spawn in Water.</p>
-</div>
-<p>&ldquo;Frogs!&rdquo; said Frank.</p>
-<p>Uncle George nodded, and, stepping to the edge of
-the pond, he pulled the net out, and with it a large
-mass of what looked like clear jelly, having a large
-number of black dots in it.</p>
-<div class="pb" id="Page_46">46</div>
-<p>&ldquo;Bring the largest jar, Tom,&rdquo; he said, &ldquo;we are
-going to take this home.&rdquo;</p>
-<p>&ldquo;What is it, Uncle George?&rdquo; both boys asked at
-once.</p>
-<p>&ldquo;It is a mass of frog&rsquo;s eggs, called the spawn of
-the frog,&rdquo; their uncle replied. &ldquo;Now, Frank, hold the
-jar over the water while I try to pour it in.&rdquo;</p>
-<p>It was no easy matter getting it into the jar. It
-fell back into the pond several times before it was at
-last got in the jar.</p>
-<p>&ldquo;There,&rdquo; said Uncle George, as he placed the jar,
-now filled with frog spawn, upon the bank. &ldquo;Now,
-let us go to another part of the pond and look for
-something else.</p>
-<p>&ldquo;Keep quite still and look into the water. That is
-the only way to study pond life. If you move about
-you will see very little. Now tell me if you see anything
-moving at the bottom of the pond.&rdquo;</p>
-<p>&ldquo;I see things like little pieces of stick moving
-slowly about,&rdquo; said Tom in a whisper; &ldquo;but perhaps
-it is the water that is moving them.&rdquo;</p>
-<p>&ldquo;Not a bit of it,&rdquo; said Uncle George. &ldquo;They are
-not pieces of stick. There is a living creature inside
-each of them. We must have some of them, Tom.
-They are very interesting creatures.&rdquo; And Uncle
-George put his hand carefully down and picked
-several of them up.</p>
-<p>&ldquo;These are caddis &lsquo;worms,&rsquo;&rdquo; said Uncle George.
-He placed them in the second jar, and filled it up with
-water.</p>
-<p>Tom then saw that each of the &ldquo;sticks&rdquo; was really
-a little house, in which was an insect of some sort.</p>
-<div class="pb" id="Page_47">47</div>
-<p>The cases were built of all kinds of odds and ends,
-glued together by the clever creatures that lived inside
-them.</p>
-<p>Some were built of little pieces of rush or water-weed,
-others of tiny shells, and others of very small
-stones.</p>
-<p>Each case was open at one end, and from this end
-the little dweller came almost half-way out. They could
-see his head, his legs, and the fore part of his body as
-he moved along, dragging his little house after him.</p>
-<p>&ldquo;Uncle George, come here please,&rdquo; Frank shouted
-from the other side of the pond. &ldquo;Oh, such a funny
-animal&mdash;a fish with legs.&rdquo;</p>
-<p>&ldquo;A fish with legs?&rdquo; said Uncle George, laughing.
-&ldquo;Oh, we must come and see that.&rdquo;</p>
-<p>&ldquo;Why, that isn&rsquo;t a fish, Frank. It is a newt.&rdquo;
-And Uncle George put in the net to catch him. But
-the creature was too quick for him. It darted out of
-sight.</p>
-<p>&ldquo;Here are two others. Oh, such big ones,&rdquo; said
-Tom, in a loud whisper.</p>
-<p>This time Uncle George was luckier. When he
-drew up the net there were two large creatures like
-lizards in it.</p>
-<p>&ldquo;This is a lucky find, boys,&rdquo; said their uncle.
-&ldquo;Great crested newts, and what beauties they are!&rdquo;</p>
-<p>The boys were surprised to see him take one of the
-newts out of the net in his hand. He turned them over
-and looked at them closely before putting them into
-the jar.</p>
-<p>&ldquo;Aren&rsquo;t you afraid they will bite you, Uncle George?&rdquo;
-Tom asked.</p>
-<div class="pb" id="Page_48">48</div>
-<p>&ldquo;No, they cannot bite, and for a very good reason.
-They have got no teeth. They are most harmless
-creatures.</p>
-<p>&ldquo;But we must be getting home, boys. We have
-done well for our first visit to the pond. I will tell you
-all about what we have found when we get home, and
-you must watch them closely for yourselves.&rdquo;</p>
-<p>&ldquo;Are we going to keep all these animals?&rdquo; Frank
-asked.</p>
-<p>&ldquo;We will keep them for a little while, so as to
-find out what we can about them, then we will put
-them in the pond again.&rdquo;</p>
-<h3>Exercises on Lesson VII.</h3>
-<dl class="ex"><dt>1. What did the boys find in the pond?</dt>
-<dt>2. What other living things may be seen in ponds? Make a list of all the pond creatures you know.</dt>
-<dt>3. Why do caddis &ldquo;worms&rdquo; build cases round themselves?</dt>
-<dt>4. Can newts bite? Give reason.</dt></dl>
-<div class="pb" id="Page_49">49</div>
-<h2 id="c8">VIII.&mdash;UNCLE GEORGE&rsquo;S TANK.</h2>
-<p>Uncle George&rsquo;s tank was very simple. It was made
-up of several large glass bells, such as the gardener
-uses for covering tender plants.</p>
-<div class="img" id="fig21">
-<img src="images/illus51.jpg" alt="" width="500" height="315" />
-<p class="caption">Uncle George&rsquo;s Aquarium.</p>
-</div>
-<p>Each glass bell had a nob on the end of it. Uncle
-George got a large block of wood for each bell-jar.
-This block he hollowed out with a chisel.</p>
-<p>He next bored a large hole in the centre of the
-hollow to hold the nob. Then he cut a piece of thick
-green cloth into a round shape, with a hole in its
-centre.</p>
-<p>This piece of cloth was placed over the hollowed out
-part of the block, and the bell-jar, turned upside down,
-was placed in the block so that the glass nob fitted into
-the hole.</p>
-<div class="pb" id="Page_50">50</div>
-<p>Uncle George fitted up four of these tanks and filled
-them with fresh water. The frog spawn was put into
-the first vessel. The next was for the newts. The
-third one held the caddis worms and some other
-curious creatures that had been found in the ditch.</p>
-<p>In the fourth vessel were half a dozen pretty little
-fishes called stickle-backs, which the boys had caught
-in the brook.</p>
-<p>Some water weeds and a few water snails or whelks
-were put into each vessel,
-except that with the frog
-spawn in it.</p>
-<p>Every other morning
-Uncle George changed
-the water by means of a
-tube which he called a
-siphon.</p>
-<p>This was a piece of
-lead pipe, about two feet
-long, and bent in the
-middle into the form of
-the letter U.</p>
-<p>&ldquo;The water weeds are
-very pretty,&rdquo; said Frank.</p>
-<p>&ldquo;They are,&rdquo; replied his
-uncle, &ldquo;and they are also
-very useful. They help to
-keep the water pure. I
-should have to change
-the water every day if there were no weeds in it.</p>
-<div class="img" id="fig22">
-<img src="images/illus52.jpg" alt="" width="500" height="751" />
-<p class="caption">Stickle-backs, Pond Weed, etc., in Aquarium.</p>
-</div>
-<p>&ldquo;The whelks also are most useful. They are the
-road-men of our ponds and streams. They eat up all
-<span class="pb" id="Page_51">51</span>
-the waste matter, and so keep the water clean and
-healthy.&rdquo;</p>
-<p>It was great fun feeding those little fishes. They
-were fed sometimes on raw meat chopped very fine,
-sometimes on little pieces of biscuit. At first they were
-very shy, but they soon got over that. In less than a
-week they were quite at home, and would come up to
-the top of the water and take tiny pieces of beef from
-the boys&rsquo; fingers.</p>
-<p>They would swim after Frank&rsquo;s finger as he drew it
-round the tank, and would even leap out of the water
-for food that was held out to them.</p>
-<p>At times they darted about as if playing &ldquo;hide and
-seek&rdquo; among the water weeds.</p>
-<p>By and by the boys noticed that every time one of
-the little fish darted at another, the three cruel spines
-rose up on his back, and that he was really trying to
-spear his neighbour.</p>
-<p>One morning a dead stickle-back was found in the
-bottom of the tank. A few days later another little
-fish was picked out pale and stiff.</p>
-<p>&ldquo;They are killing one another,&rdquo; said Frank. &ldquo;What
-shall we do?&rdquo;</p>
-<p>&ldquo;If any more of this fighting goes on we shall have
-to put them back into the brook,&rdquo; said Uncle George.</p>
-<p>&ldquo;Do they always fight?&rdquo;</p>
-<p>&ldquo;No, not always&mdash;only in spring-time when they are
-mating. Look! there is one of them getting very pretty.
-He is the victor&mdash;the bully of the pool.&rdquo;</p>
-<p>&ldquo;Let us call him <i>Bully</i>,&rdquo; said Dolly; &ldquo;he is
-bigger than the others, and oh, so much more
-beautiful.&rdquo;</p>
-<div class="pb" id="Page_52">52</div>
-<p>Next day another stickle-back was found dead, and
-Bully&rsquo;s colours were much brighter. He darted about
-as if the whole tank belonged to him.</p>
-<p>He was really a lovely fish now, and he seemed to
-know it by the proud way in which he dashed about,
-showing off his fine slender body all shiny with crimson,
-blue, and gold. He was, as Dolly said, &ldquo;Just like a
-little bit of rainbow.&rdquo;</p>
-<p>But before the evening a very curious thing took
-place. Bully seemed to have suddenly lost all his fine
-colours; and instead of swimming proudly at the top
-of the tank, he slunk sulky to the bottom.</p>
-<p>The strange thing was that <i>another</i> stickle-back&mdash;a
-smaller fish than Bully&mdash;was now brightly coloured, and
-seemed to be lord of the tank.</p>
-<p>&ldquo;Bully has been beaten,&rdquo; said Uncle George, &ldquo;and
-his victor has taken not only the courage but the colour
-out of him.&rdquo;</p>
-<p>&ldquo;It serves him right, I think, for being so proud and
-so cruel. But what is the meaning of all this fighting
-and change of colours, Uncle George?&rdquo;</p>
-<p>&ldquo;Oh, it is very simple, Frank. There is a lady
-stickle-back in the question; and, like the brave knights
-of old, our little stickle-backs are trying to win her by
-fighting.</p>
-<p>&ldquo;The victor will marry her. They will build a
-neat little nest for themselves, and live happily
-together.</p>
-<p>&ldquo;To-morrow we will take them back to the
-brook, where the weak ones will be better able to
-escape.</p>
-<p>&ldquo;In June we will visit the brook. If we are lucky
-<span class="pb" id="Page_53">53</span>
-enough to find one of their nests, you will see that after
-Lady Stickle-back lays her tiny eggs in it, her little
-husband guards the home
-night and day.</p>
-<p>&ldquo;When the family are
-hatching out, the plucky little
-stickle-back bravely defends
-the nest.</p>
-<p>&ldquo;He drives away water-beetles,
-perch, and other fishes
-much larger than himself.
-For well he knows that these
-visitors would quickly gobble
-up his darlings if they got
-the chance.&rdquo;</p>
-<div class="img" id="fig23">
-<img src="images/illus55.jpg" alt="" width="359" height="500" />
-<p class="caption">Stickle-backs and Nest.</p>
-</div>
-<h3>Exercises on Lesson VIII.</h3>
-<dl class="ex"><dt>1. What is an aquarium?</dt>
-<dt>2. Why are water weeds and water snails put into an aquarium?</dt>
-<dt>3. How do you feed small fish? Why should you be careful not to put in more than the fishes can eat?</dt>
-<dt>4. Where does the stickle-back lay its eggs?</dt></dl>
-<div class="pb" id="Page_54">54</div>
-<h2 id="c9">IX.&mdash;TADPOLES.</h2>
-<p>The frog spawn, when first put into the big glass
-bell, was just a mass of jelly-like stuff studded all over
-with black dots.</p>
-<p>When looked at closely, it was seen to consist of
-many round, clear eggs. Each egg was surrounded by
-a thin skin, and had, in its centre, a little round black
-ball or yolk.</p>
-<p>At the end of a week all these black yolks had lost
-their round shape. They were now long and oval.
-During the next four days these oval yolks became
-little moving animals, each having a head, body, and
-tail, but no limbs.</p>
-<p>From the head of each there grew out two pairs of
-feathery objects. These, Uncle George told the boys,
-were gills or breathing organs. Soon another pair of
-these feathery gills appeared: so that each little creature
-had now three on each side of his head.</p>
-<p>By the end of the second week the little creatures
-had all wriggled out of the eggs. They hung together
-by their feathery gills in little black groups.</p>
-<p>&ldquo;What shall we feed them on?&rdquo; Frank asked his
-uncle.</p>
-<p>&ldquo;They are not at all nice in their tastes,&rdquo; Uncle
-George replied. &ldquo;They will eat almost anything, from
-water weeds up to drowned kittens. If they get nothing
-else, they will eat one another, and not mind it a bit.&rdquo;</p>
-<div class="pb" id="Page_55">55</div>
-<p>&ldquo;How dreadful,&rdquo; said Frank. &ldquo;Hadn&rsquo;t we better
-give them something to eat now, for fear they may eat
-each other up.&rdquo;</p>
-<p>&ldquo;It wouldn&rsquo;t do much good giving them anything
-to eat now, for they have <i>no mouths</i>.&rdquo;</p>
-<div class="img" id="fig24">
-<img src="images/illus57.jpg" alt="" width="500" height="416" />
-<p class="caption">The Development of the Tadpole.<br />1. Portion of Frog Spawn. 2. Same after ten days. 3. A Newly-Hatched Tadpole. The remaining figures show the same Tadpole at (4) one week; (5) three weeks; (6) seven weeks; (7) eleven weeks; (8) thirteen weeks; and (9) fourteen weeks after hatching.</p>
-</div>
-<p>&ldquo;No mouths, Uncle George?&rdquo;</p>
-<p>&ldquo;No mouths,&rdquo; Uncle George repeated. &ldquo;Is it not
-curious? For four days the tadpole, or young frog,
-has no mouth, and yet during that time he grows a
-great deal.</p>
-<p>&ldquo;Four days after he leaves the egg his mouth
-<span class="pb" id="Page_56">56</span>
-appears. It is a very small mouth, fringed with frilled,
-fleshy lips. These lips are moved by a pair of strong,
-horny jaws. This mouth is very different from the
-wide, gaping mouth of the frog.&rdquo;</p>
-<p>Just as Uncle George had said, the tadpoles ate
-nothing for four days. Then their mouths appeared,
-and they began to eat the water weeds. But Uncle
-George fed them on raw meat. He said it made them
-grow quickly. A small piece of raw beef, tied to the
-end of a string, was lowered into the tank, and the
-tadpoles swarmed around it. What was left of the
-beef was pulled out every morning, and a fresh piece
-put in.</p>
-<p>By this means the water was kept clean, and had
-only to be changed once a week.</p>
-<p>&ldquo;Why, they have no gills now,&rdquo; said Frank one
-day, as he was helping his uncle to change the water.</p>
-<p>&ldquo;Oh yes, they have, Frank. They have gills like a
-fish now.</p>
-<p>&ldquo;When they are about four weeks old, their feathery
-gills go away; but, before this, four gill-slits are formed
-in each side of the tadpole&rsquo;s head.&rdquo;</p>
-<p>Uncle George took a glass tube about twelve inches
-long, and placing his thumb tightly on one end of it,
-he pushed it down into the water until the other end
-was right above a tadpole.</p>
-<p>Then he took his thumb off, and the tadpole and
-some water shot up the tube. He then replaced his
-thumb tightly on the end of the tube, and lifted it out
-of the water.</p>
-<p>The tadpole and water remained in the tube as long
-as he kept his thumb on the end of it. He emptied
-<span class="pb" id="Page_57">57</span>
-the contents of the tube into a little dish, and Frank
-looked at the tadpole with a glass.</p>
-<p>&ldquo;I can&rsquo;t see the gill-slits,&rdquo; said Frank.</p>
-<p>&ldquo;Oh yes, you can, if you look closely. What seems
-to be a big head is really head and body covered over
-by a cloak of skin.&rdquo;</p>
-<p>&ldquo;Yes, I see the gills now,&rdquo; said Frank. &ldquo;They are
-red in colour. I also see the cloak. There is an
-opening on the left side of it.&rdquo;</p>
-<p>&ldquo;That is so,&rdquo; said his uncle. &ldquo;That opening is
-there to let the water into the gills.&rdquo;</p>
-<p>At the end of the fifth week, Uncle George took
-some tadpoles out for the boys to look at.</p>
-<p>&ldquo;Do you see any change?&rdquo; he asked.</p>
-<p>&ldquo;Yes,&rdquo; said Tom, &ldquo;they have two things like hind
-legs growing out.&rdquo;</p>
-<p>&ldquo;These <i>are</i> legs,&rdquo; his uncle said, &ldquo;and in two
-weeks from now these legs will have movable joints
-in them.&rdquo;</p>
-<p>Day by day the tadpoles were carefully watched,
-and the following wonderful changes were observed.</p>
-<p>When about seven weeks old, their hind legs became
-jointed, and long toes were formed. The tadpoles were
-now able to kick out and swim by means of their long
-hind legs. Their gills went away, and they came to the
-surface and took mouthfuls of air. They now had lungs
-instead of gills.</p>
-<p>But the most striking change came at the end of
-the eleventh week.</p>
-<p>One by one they lost the cloak which covered head
-and body.</p>
-<p>Under this cloak a pair of fore legs had been folded
-<span class="pb" id="Page_58">58</span>
-up and hidden for some time. They were now tiny,
-wide-mouthed frogs, with long, clumsy tails.</p>
-<p>The clumsy tails grew smaller and smaller daily.
-At last there was no tail left, and what was at one
-time a cluster of black, wriggling tadpoles, was now a
-crowd of lively little dark yellow frogs.</p>
-<p>The boys wished to keep them longer, but their
-uncle told them that they could not do this.</p>
-<p>&ldquo;Your tadpoles are now frogs,&rdquo; he said. &ldquo;The frog
-is an insect eater. As we cannot give these little frogs
-their natural food, we must place them where they can
-get it for themselves, or they will die.&rdquo;</p>
-<p>So the frogs were carried back to their native pond.</p>
-<h3>Exercises on Lesson IX.</h3>
-<dl class="ex"><dt>1. What are tadpoles?</dt>
-<dt>2. How old is the frog before his hind legs appear?</dt>
-<dt>3. A tadpole seems to be all head and tail. Can you explain this?</dt>
-<dt>4. How do tadpoles breathe&mdash;(1) when they are first hatched? (2) when they are four weeks old? (3) when they are eleven weeks old?</dt></dl>
-<div class="img" id="fig25">
-<img src="images/illus62.jpg" alt="" width="576" height="800" />
-<p class="caption">Frog, Toad, and Newt&mdash;showing Eggs of Toad and Newt, and Tadpoles of Frog and Toad</p>
-</div>
-<div class="pb" id="Page_61">61</div>
-<h2 id="c10">X.&mdash;FROGS, TOADS, AND NEWTS.</h2>
-<p>&ldquo;I think we had better take our newts back to the
-pond now, Frank.&rdquo;</p>
-<p>&ldquo;Oh, do let us keep them for a day or two longer,
-Uncle George. They are getting quite tame.&rdquo;</p>
-<p>As he spoke, Frank drew his finger slowly round
-the outside of the glass vessel that held the newts.
-One of the creatures swam round, following his finger.</p>
-<p>&ldquo;Look, Uncle George! He knows me.&rdquo;</p>
-<p>&ldquo;He is hungry, and thinks you ought to have a
-small worm in your fingers.&rdquo;</p>
-<p>&ldquo;<i>Thinks?</i> Uncle George. Can newts <i>think</i>?&rdquo;</p>
-<p>&ldquo;It looks as if they could, does it not? We feed
-these creatures every day, and they have got into the
-habit of looking for food every time we come near them.
-But here comes Tom with the worms.&rdquo;</p>
-<p>It was curious to watch how the newt acted when
-a tiny worm was given it. At first it seemed not to
-see the worm, although it was wriggling at his nose.
-It crept back slowly about two or three inches, then
-all at once it sprang upon the worm and gobbled
-it up.</p>
-<p>&ldquo;You must tell us all about the newt, Uncle George,&rdquo;
-said Tom.</p>
-<p>&ldquo;I should like to know how much you two boys
-have found out by feeding and watching these two,&rdquo;
-said Uncle George. &ldquo;So just tell me what <i>you</i> know
-<span class="pb" id="Page_62">62</span>
-about the newt first, then perhaps I can tell you some
-things about newts, frogs, and toads which you do not
-know.&rdquo;</p>
-<p>&ldquo;Well,&rdquo; began Tom, &ldquo;the newt lives in water. He
-has four feet, with pretty little toes upon them, and a
-long tail. He feeds upon worms, tadpoles, and other
-small animals, and he swallows them whole, because
-he has no teeth.</p>
-<div class="img" id="fig26">
-<img src="images/illus64.jpg" alt="" width="500" height="510" />
-<p class="caption">Crested Newt, Male and Female.</p>
-</div>
-<p>&ldquo;The male has a huge
-crest, and is gay with
-bright colours.</p>
-<p>&ldquo;The female has no
-crest. She lays her eggs
-upon the pond weeds. A
-single egg is laid upon a
-leaf. The leaf is then
-rolled round it, so as to
-hide it from enemies.&rdquo;</p>
-<p>&ldquo;Very good, Tom,&rdquo; said
-his uncle; &ldquo;but you have
-not told us about the newt&rsquo;s skin.&rdquo;</p>
-<p>&ldquo;Oh, I forgot that,&rdquo; Tom went on. &ldquo;The newt has
-a lovely silky skin, which it only wears for about a
-week, then it casts it off. Now, tell us something
-more about them, Uncle George.&rdquo;</p>
-<p>&ldquo;The newt does not live in the water all the year,&rdquo;
-said Uncle George. &ldquo;During autumn and winter great
-families of newts sleep together under stones and in
-dry holes in the earth. They only go to the pond in
-early spring to lay their eggs.&rdquo;</p>
-<p>&ldquo;Do newts ever become frogs or toads?&rdquo; asked
-Frank.</p>
-<div class="pb" id="Page_63">63</div>
-<p>&ldquo;Oh no, Frank, never. I know what makes you
-think that. It is because the young frog, just before
-he loses his tail, is very like a little newt.</p>
-<p>&ldquo;Young newts are tadpoles too, but they differ very
-much from frog tadpoles. Newt tadpoles live in the
-pond for more than a year. They have feathery outside
-gills on all that time. Their <i>fore</i> feet are formed first.
-If you remember, our frog tadpoles got their hind legs
-first.</p>
-<p>&ldquo;Long ago people believed all sorts of absurd things
-about the poor, harmless newt. They were afraid to
-touch it. Every newt found was killed at once, for it
-was thought to have a sting and poison bag. Even at
-the present day many people believe that newts and
-toads are dangerous animals.&rdquo;</p>
-<p>&ldquo;How can you tell a toad from a frog, Uncle George,&rdquo;
-Tom asked.</p>
-<p>&ldquo;They are very different from each other, both in
-shape and in their ways of living. The toad is a fat,
-clumsy animal. His skin is dull and warty. He does
-not hop, but crawls or walks lazily along.</p>
-<p>&ldquo;He lives upon flying insects, which he catches with
-his curious long tongue. He gets very fat during
-summer and autumn.</p>
-<p>&ldquo;Before winter comes on, he looks out a snug hole
-under a root or stone. Here he sleeps the whole
-winter through.</p>
-<p>&ldquo;In spring he wakes up, lean and hungry, and
-betakes himself to the pond.</p>
-<p>&ldquo;The eggs of the toad are laid in the water in long
-strings, each like a double row of beads. They hang
-gracefully upon the water weeds, and look very pretty.</p>
-<div class="pb" id="Page_64">64</div>
-<p>&ldquo;The toad tadpoles are very like those of the frog.
-They go through the same changes.</p>
-<p>&ldquo;The toad also casts his skin, but he does not throw
-it away like the newt. He takes his old, cast-off skin,
-rolls it up into a neat little ball, and <i>swallows it</i>.</p>
-<p>&ldquo;The frog&rsquo;s body is more slender. His skin is slippery.
-It is not dull and dingy like that of the toad. It is of
-a bright greenish yellow colour, marked with black spots
-of different sizes.</p>
-<div class="img" id="fig27">
-<img src="images/illus66.jpg" alt="" width="500" height="343" />
-<p class="caption">1. Frog. 2. Toad. 3. Frog catching a Fly with its tongue.</p>
-</div>
-<p>&ldquo;The frog can change his colour from light to dark.
-He has long hind legs which enable him to hop very
-high on land and to swim very fast in the pool.</p>
-<p>&ldquo;He likes the long, damp grass, where he catches
-flies, beetles, and slugs.</p>
-<p>&ldquo;He sleeps through the winter, buried in the mud
-at the bottom of the still pool.</p>
-<div class="pb" id="Page_65">65</div>
-<p>&ldquo;Like the toad, the frog catches his prey by means
-of a long, sticky tongue, which darts out of his mouth
-whenever an unlucky insect comes within reach.</p>
-<p>&ldquo;His tongue is fixed to the floor of his mouth just
-at his lower lip. It is forked at the end. When not
-in use, it lies folded back inside his mouth and points
-down his throat.&rdquo;</p>
-<h3>Exercises on Lesson X.</h3>
-<dl class="ex"><dt>1. Where are frogs, newts, and toads in winter-time?</dt>
-<dt>2. How could you tell a toad from a frog?</dt>
-<dt>3. What is the difference between young newts (tadpoles) and young frogs (tadpoles)?</dt>
-<dt>4. Write the life of a frog (or of a toad) as if told by the creature itself.</dt></dl>
-<div class="pb" id="Page_66">66</div>
-<h2 id="c11">XI.&mdash;UNDERGROUND STEMS.</h2>
-<p>Uncle George and his three young pupils had been
-to the woods. After tea he opened the metal box which
-he carried, slung by a strap over his shoulder, whenever
-he went out rambling.</p>
-<p>This box had in it a pond-net and a couple of wide
-bottles. To-night it was half filled with plants.</p>
-<p>Before laying them on the table, Uncle George
-washed the soil from their roots at the tap.</p>
-<p>&ldquo;Now then,&rdquo; he said, &ldquo;let me see how much you
-remember of our lesson in the woods. I will begin
-with Dolly&rdquo;&mdash;and Uncle George held up a lovely white
-flower.</p>
-<p>&ldquo;That,&rdquo; said little Dolly, &ldquo;is the <i>wooden enemy</i>!&rdquo;</p>
-<p>Uncle George laughed loudly, and so did the two
-boys. Dolly laughed too&mdash;she did not quite know why.
-She was a merry little girl, who laughed whenever she
-got the chance.</p>
-<p>&ldquo;You mean <i>wood anemone</i>, dear, don&rsquo;t you?&rdquo; said
-Uncle George, as he stroked her pretty curly hair.</p>
-<p>&ldquo;Yes, I <i>mean</i> that, Uncle George; but I can&rsquo;t say it
-properly,&rdquo; said Dolly, still laughing.</p>
-<p>&ldquo;Oh yes, you can if you try&mdash;wood a-nem&acute;-o-ne. It
-is easily pronounced. Now Frank, it is your turn.
-What is this one with the great number of yellow
-petals, the spotted heart-shaped leaves, and the funny
-fat roots?&rdquo;</p>
-<div class="pb" id="Page_67">67</div>
-<p>&ldquo;The pilewort, or lesser celandine,&rdquo; answered Frank.</p>
-<p>&ldquo;Quite right! Now, Tom, here is one for you.
-This plant, you see, has broad kidney-shaped leaves
-with crimped edges, large yellow flowers, and a coarse
-round hollow stem. We found it, if you remember,
-growing in the mud at the edge of the brook.&rdquo;</p>
-<div class="img" id="fig28">
-<img src="images/illus69.jpg" alt="" width="500" height="592" />
-<p class="caption">Marsh Marigold.</p>
-</div>
-<p>&ldquo;It is the marsh marigold,&rdquo; said Tom.</p>
-<p>&ldquo;Very good! Now this one?&rdquo;</p>
-<p>As he held it up all three answered at once&mdash;&ldquo;The
-primrose!&rdquo;</p>
-<p>&ldquo;We found this one also growing at the edge of
-the brook.&rdquo; As he spoke, Uncle George held out a
-very pretty plant. Its flowers were of a pale pinkish
-<span class="pb" id="Page_68">68</span>
-blue colour. They were shaped like the flowers of the
-wallflower, but were smaller. The flowers were borne
-up upon a long stalk which sprang from a rosette of
-pretty little leaves.</p>
-<p>&ldquo;It is the <i>lady&rsquo;s smock</i>,&rdquo; said Dolly; &ldquo;I remembered
-that one because it is so pretty.&rdquo;</p>
-<p>&ldquo;Well done, Dolly!&rdquo; said her uncle proudly. &ldquo;Now,
-I think we have quite enough to go on with. Let us
-take these up one by one and examine and draw parts
-of them. First take the wood anemone. What do you
-call this?&rdquo;</p>
-<p>Uncle George pointed to the stout part of the plant
-that had been in the ground.</p>
-<p>&ldquo;The root,&rdquo; said Frank.</p>
-<p>&ldquo;No, Frank!&rdquo; his uncle replied. &ldquo;But that is what
-I thought you would say. Now, tell us why you think
-it is the root.&rdquo;</p>
-<p>&ldquo;Because it grows under ground.&rdquo;</p>
-<p>&ldquo;But roots do not have buds upon them, Frank: and
-see! flower-stalk and leaf-stalk spring from it, while
-fibrous, or string like, roots hang down from it.&rdquo;</p>
-<p>&ldquo;It must be a stem, then,&rdquo; Frank ventured.</p>
-<p>&ldquo;It <i>is</i> the stem,&rdquo; said his uncle. &ldquo;We have already
-seen that the creeping crowfoot and ground ivy have
-stems that creep along on the surface of the ground.</p>
-<p>&ldquo;Many plants have stems which creep along under
-ground. This is an underground stem; and this is
-another.&rdquo; Here he pointed to the primrose.</p>
-<p>&ldquo;Why, I always thought that that pink thing was
-the root of the primrose,&rdquo; said Frank; &ldquo;but I see now
-that it is really more like a stem. It has marks upon
-it like scars.&rdquo;</p>
-<div class="img" id="fig29">
-<img src="images/illus72.jpg" alt="" width="570" height="800" />
-<p class="caption">Plants with Underground Stems</p>
-</div>
-<div class="img" id="fig30">
-<img src="images/illus73.jpg" alt="" width="576" height="800" />
-<dl class="undent"><dt>1. Caterpillar, Pupa, and perfect Insect of Tiger Moth</dt>
-<dt>2. Caterpillar, Pupa, and perfect Insect of Magpie Moth</dt>
-<dt>3. White (Cabbage) Butterfly, Male and Female, with Caterpillar and Pupa</dt></dl>
-</div>
-<div class="pb" id="Page_73">73</div>
-<p>&ldquo;These are marks where leaves once grew upon it,&rdquo;
-his uncle remarked. &ldquo;Notice that the primrose leaves
-form a rosette on the top of this underground
-stem.&rdquo;</p>
-<p>&ldquo;Is there any reason for these plants having their
-stems under ground?&rdquo; Tom
-asked.</p>
-<p>&ldquo;There is a reason for
-everything in nature, my boy.
-Can&rsquo;t you see any reason for
-this yourself?&rdquo;</p>
-<p>&ldquo;I see one, I think,&rdquo; said
-Frank; &ldquo;it enables the plant
-to creep out to new soil.&rdquo;</p>
-<p>&ldquo;That is one very good
-reason, Frank. Now, why
-should it seek other soil?&rdquo;</p>
-<p>&ldquo;For food!&rdquo;</p>
-<p>&ldquo;That is right, Frank.
-Those plants which have
-underground stems seem to
-die down every autumn; but
-they are alive all the time under ground, safe from
-the frosts and bitter winds which kill tender plants.
-And they peep up in a new place in spring.</p>
-<div class="img" id="fig31">
-<img src="images/illus75.jpg" alt="" width="331" height="499" />
-<p class="caption">Anemone.</p>
-</div>
-<p>&ldquo;Now I want you to tell me why these underground
-stems are swollen out so. It cannot be for strength,
-for creeping stems don&rsquo;t require to be strong.</p>
-<p>&ldquo;Fetch me a raw potato, Tom, please!</p>
-<p>&ldquo;Now,&rdquo; Uncle George continued, &ldquo;tell me what this
-potato is.&rdquo;</p>
-<p>&ldquo;It is an underground stem,&rdquo; said Frank.</p>
-<div class="pb" id="Page_74">74</div>
-<p>&ldquo;Yes! Why is it swollen? What do we use the
-potato for?&rdquo;</p>
-<p>&ldquo;For food. Oh, I know,&rdquo; said Frank, &ldquo;it is a
-food store.&rdquo;</p>
-<div class="img" id="fig32">
-<img src="images/illus76.jpg" alt="" width="280" height="340" />
-<p class="caption">Primrose.</p>
-</div>
-<div class="img" id="fig33">
-<img src="images/illus76a.jpg" alt="" width="205" height="340" />
-<p class="caption">Pilewort, showing Roots.</p>
-</div>
-<p>&ldquo;Of course,&rdquo; said his uncle. &ldquo;It is a supply of food
-gathered up this year for next year&rsquo;s plant. Look at
-the roots of the lesser celandine. I see Tom has drawn
-them. They are swollen. Are they roots, or underground
-stems?&rdquo;</p>
-<p>&ldquo;They have neither leaf marks on them, nor buds,&rdquo;
-said Frank, &ldquo;I think they must be roots.&rdquo;</p>
-<p>&ldquo;They <i>are</i> roots,&rdquo; said Uncle George, &ldquo;but they are
-food supplies all the same.</p>
-<p>&ldquo;There are other underground stems that grow
-quickly. Good examples of these are mint, couch grass,
-<span class="pb" id="Page_75">75</span>
-and sand sedge. The underground stems of these
-plants grow so fast that they are always occupying
-new ground. They have therefore no need to store up
-a food supply like their slower growing neighbours
-the primrose, potato, anemone, iris, and many others.&rdquo;</p>
-<h3>Exercises on Lesson XI.</h3>
-<dl class="ex"><dt>1. Dig up a primrose plant, and make a rough sketch showing underground stem, roots, and leaves.</dt>
-<dt>2. An underground stem may be of use to a plant in three different ways. Can you name them?</dt>
-<dt>3. There are two distinct kinds of underground stems&mdash;those that grow quickly and those that grow slowly. Name three of each kind, and tell how they differ in shape.</dt>
-<dt>4. Compare a potato with a horse-chestnut twig. Supposing your twig to be swollen out with plant-food, what parts of it do the &ldquo;eyes&rdquo; of the potato represent? What do the {scars/marks} near the &ldquo;eyes&rdquo; represent?</dt></dl>
-<div class="pb" id="Page_76">76</div>
-<h2 id="c12">XII.&mdash;CATERPILLARS.</h2>
-<p>&ldquo;We found these upon the dead-nettle.&rdquo; As he
-spoke, Frank opened a small cardboard box and
-showed his uncle half a dozen large, hairy caterpillars.</p>
-<div class="img" id="fig34">
-<img src="images/illus78.jpg" alt="" width="500" height="262" />
-<p class="caption">Larva Cage.</p>
-</div>
-<p>&ldquo;Splendid,&rdquo; said Uncle George. &ldquo;We will just put
-these into the cage.&rdquo;</p>
-<p>Uncle George, who was a very good carpenter, had
-of late been busy in his spare time making a box or
-cage for keeping caterpillars in. He called it a <i>larva
-cage</i>.</p>
-<p>It was a curious looking thing, something like a
-small meat-safe. Three sides and the top of it were
-covered with gauze. The fourth side was a large pane
-of glass. The gauze-covered side opposite to this
-opened as a door.</p>
-<p>It was divided into an upper and a lower part by
-a shelf in the middle, and, by sliding in two pieces of
-wood, it could be divided into four tiny rooms.</p>
-<div class="pb" id="Page_77">77</div>
-<p>Now that it was finished, Uncle George wanted to
-get it stocked, and his two nephews wanted it stocked
-too.</p>
-<p>&ldquo;Do you want any more of these woolly caterpillars?&rdquo;
-Frank asked.</p>
-<p>&ldquo;No, Frank, but you can bring me in some more
-of a different kind. Or, better still, let us go out into
-the garden now and see if we can find any there.&rdquo;</p>
-<p>The gardener beamed with joy when Uncle George
-told him what they had come to the garden for.</p>
-<p>&ldquo;Caterpillars?&rdquo; he said. &ldquo;I wish you would take
-them all, sir. They are the worst vermin in the garden.
-Last year they left scarcely a leaf on my currant
-bushes.&rdquo;</p>
-<p>Our three friends went straight to the currant
-bushes. Here they found a good many pretty little
-caterpillars of a creamy colour, richly striped with
-orange, and dotted over with black spots. These,
-their uncle informed them, were the caterpillars or
-<i>larv&aelig;</i> of the magpie moth.</p>
-<p>On the cabbages they found several caterpillars of
-the large white butterfly. These were bluish green in
-colour, with three bold yellow stripes running along
-the whole length of their bodies.</p>
-<p>&ldquo;What are these, Uncle George?&rdquo; Tom asked, as
-he turned up a cabbage leaf and pointed to several
-white patches on its under side. The leaf next it was
-spotted just like it.</p>
-<p>&ldquo;Oh, Tom, how lucky we are! These are the eggs
-of the large white butterfly. Now we shall be able to
-follow up the whole life of this insect, and a wonderful
-life it is. Let us go right in and examine them. Take
-<span class="pb" id="Page_78">78</span>
-some cabbage leaves and some currant leaves to feed
-the hungry caterpillars with.&rdquo;</p>
-<p>&ldquo;Our larva cage is now quite full,&rdquo; said Uncle
-George, when he had put the caterpillars in.</p>
-<p>&ldquo;Why do you not put them into the same room,
-Uncle George?&rdquo;</p>
-<p>&ldquo;There are two reasons for that, Frank. First,
-they live upon different kinds
-of food. The hairy caterpillar,
-or &lsquo;woolly bear,&rsquo; as boys call it,
-feeds upon nettles, the cabbage
-caterpillar prefers cabbage leaves,
-while the currant caterpillar will
-only eat currant leaves.</p>
-<div class="img" id="fig35">
-<img src="images/illus80.jpg" alt="" width="400" height="406" />
-<dl class="undent"><dt>1. Caterpillar and Eggs of Cabbage Butterfly.</dt>
-<dt>2. Egg magnified.</dt></dl>
-</div>
-<p>&ldquo;Second, the woolly bear will
-sometimes eat up his smooth-skinned
-friends. Now, get your
-glasses and have a peep at the
-beautiful eggs of the &lsquo;large
-white&rsquo; or &lsquo;cabbage&rsquo; butterfly.&rdquo;</p>
-<p>&ldquo;Why, they are not at all like eggs,&rdquo; said Frank, as
-he closely looked at them with his glass.</p>
-<p>&ldquo;What are they like, Frank?&rdquo;</p>
-<p>&ldquo;They are like little pieces of carved ivory all
-shaped alike,&rdquo; Frank replied.</p>
-<p>&ldquo;Yes, but that does not give us a very clear idea
-of their shape,&rdquo; observed his uncle. &ldquo;Come on,
-Tom.&rdquo;</p>
-<p>&ldquo;They are like little Indian clubs with the handles
-cut off, only they are beautifully marked with long,
-slender ridges and cross bars.&rdquo;</p>
-<p>&ldquo;That is really a very good account of them, Tom.
-<span class="pb" id="Page_79">79</span>
-They are arranged in patches. Count and let me know
-how many eggs are in each bunch.&rdquo;</p>
-<p>The boys counted all the groups of eggs, and found
-that there were eight eggs in some, nine in others, but
-that most of them contained ten or more.</p>
-<p>&ldquo;Now, how many egg patches are there?&rdquo; asked
-Uncle George.</p>
-<p>&ldquo;There are seven patches on my leaf,&rdquo; said Frank.</p>
-<p>&ldquo;And ten on mine,&rdquo; added Tom.</p>
-<p>&ldquo;That is about one hundred and fifty eggs altogether,&rdquo;
-said Uncle George.</p>
-<p>&ldquo;Has each of these bunches of eggs been laid by
-one butterfly?&rdquo; asked Frank.</p>
-<p>&ldquo;It is more than probable that one butterfly laid
-the whole lot,&rdquo; his uncle replied; &ldquo;for the white butterfly
-lays, as a rule, over two hundred eggs.&rdquo;</p>
-<p>&ldquo;That is about as many eggs as a hen lays in a
-year,&rdquo; said Frank.</p>
-<p>&ldquo;Yes,&rdquo; said Uncle George, &ldquo;a good hen and a white
-butterfly lay about the same number of eggs in a year;
-but the butterfly lays all her eggs in one day.</p>
-<p>&ldquo;After laying her eggs, she dies. That is perhaps
-why she always lays them on the kind of plant which
-the young caterpillars can feed upon when they hatch
-out.</p>
-<p>&ldquo;Let us look at the caterpillars now. We need not
-take them out, as we can easily see them through the
-glass side of the cage.</p>
-<p>&ldquo;Notice that the body of the cabbage caterpillar
-consists of a round, dark coloured head and a number
-of broad, ring-like divisions. How many of these
-divisions are there?&rdquo;</p>
-<div class="pb" id="Page_80">80</div>
-<p>&ldquo;Twelve,&rdquo; said Frank, after counting carefully.</p>
-<p>&ldquo;Right!&rdquo; said his uncle. &ldquo;Now, about legs&mdash;how
-many are there?&rdquo;</p>
-<p>&ldquo;There are three pairs of legs on the first three
-divisions of its body, and a pair of shorter and stouter
-legs on each of the sixth, seventh, eighth, and ninth
-divisions, making seven pairs of legs altogether,&rdquo; Frank
-answered.</p>
-<div class="img" id="fig36">
-<img src="images/illus82.jpg" alt="" width="384" height="501" />
-<p class="caption">Caterpillars of Magpie Moth.</p>
-</div>
-<p>&ldquo;That is quite correct, Frank,
-and I am glad you noticed the
-difference between the first three
-pairs and the others. The first
-three pairs are the creature&rsquo;s real
-legs. The others are false or temporary
-legs.&rdquo;</p>
-<p>&ldquo;There is a row of black spots
-on the yellow band along its side,&rdquo;
-observed Tom.</p>
-<p>&ldquo;These are its breathing-holes,
-Tom. We breathe by our lungs only, but caterpillars
-and insects have breathing-tubes all over their bodies.&rdquo;</p>
-<p>&ldquo;The woolly bear and the cabbage caterpillar move
-about in the same way,&rdquo; said Frank. &ldquo;But look at
-those currant caterpillars, Uncle George, what a
-funny way they have of getting along!&rdquo;</p>
-<p>&ldquo;These belong to a kind of caterpillars known as
-&lsquo;loopers,&rsquo;&rdquo; said his uncle. &ldquo;They move about by looping
-up their bodies in this strange manner.&rdquo;</p>
-<p>&ldquo;I do not like to handle those hairy caterpillars,&rdquo;
-Tom remarked. &ldquo;Why are they covered with those
-nasty long hairs?&rdquo;</p>
-<p>&ldquo;You have just given the reason, Tom. You don&rsquo;t
-<span class="pb" id="Page_81">81</span>
-like to touch them on account of these hairs; neither
-do animals. No bird will eat one of these. If he does,
-he will never eat another.</p>
-<p>&ldquo;Notice how they coil up like a hedgehog when they
-are touched. This makes them more difficult to
-swallow. Just imagine how a bird would feel with one
-of these ticklish customers stuck in his throat, eh?</p>
-<p>&ldquo;Now, boys, make a sketch of one of the tiny eggs,
-also one of the big cabbage caterpillar, and then we
-will go out and have a game of cricket on the lawn.&rdquo;</p>
-<h3>Exercises on Lesson XII.</h3>
-<dl class="ex"><dt>1. Where would you look for the eggs of the white butterfly? Why are they always laid upon the same kind of plant, and why <i>under</i> the leaf?</dt>
-<dt>2. Explain how caterpillars breathe.</dt>
-<dt>3. Take any caterpillars you find. Observe the leaves you find them feeding upon. Give them fresh leaves every day, and watch how they grow.</dt>
-<dt>4. Why has the &ldquo;woolly bear&rdquo; caterpillar got a hairy coat? What does he usually feed upon?</dt></dl>
-<div class="pb" id="Page_82">82</div>
-<h2 id="c13">XIII.&mdash;THE WHITE BUTTERFLY.</h2>
-<p>Uncle George had to go from home for a week, and
-his two nephews went part of the way to the railway
-station with him.</p>
-<p>As they were about to take a short cut through the
-wood, Uncle George went up to a huge beech tree.
-He looked very closely at its grey trunk for a time, then
-stepping back from it about three yards, exclaimed:&mdash;</p>
-<p>&ldquo;Come here boys! Stand beside me, look closely
-at this tree, and tell me if you see any strange objects
-sticking to the bark.&rdquo;</p>
-<p>After staring at it for some time, they both declared
-that they could see nothing upon it.</p>
-<p>&ldquo;Go nearer&mdash;nearer still! Now, do you see anything?&rdquo;</p>
-<p>The boys shook their heads.</p>
-<p>&ldquo;Go quite close up to the trunk and examine it,&rdquo; said
-Uncle George.</p>
-<p>&ldquo;Oh,&rdquo; said Frank suddenly, &ldquo;I see queer things like
-grubs, coloured almost exactly like the bark. Some of
-them are lighter in colour.&rdquo;</p>
-<p>&ldquo;Look carefully at those lighter ones, and you will
-find that they are just empty cases.&rdquo;</p>
-<p>&ldquo;So they are,&rdquo; said Frank, as he touched one with
-his finger and saw it crush up.</p>
-<p>&ldquo;Notice how they are fixed to the bark!&rdquo; said
-Uncle George.</p>
-<div class="pb" id="Page_83">83</div>
-<p>The boys watched as their uncle placed his pencil
-under one of the darker coloured objects, and saw that
-it was slung up to the tree by a loose silken girdle
-round its middle, while a tuft of fine threads fastened
-the lower end to the bark.</p>
-<p>Suddenly, as if it were annoyed at being touched
-by the pencil, the lower half of the object moved from
-side to side with rapid jerks.</p>
-<p>&ldquo;Why, it is alive,&rdquo; said Tom.</p>
-<p>&ldquo;Yes, of course it is,&rdquo; said his uncle. &ldquo;This is
-another lucky find.&rdquo;</p>
-<p>&ldquo;What are they?&rdquo; Frank asked.</p>
-<p>&ldquo;Can&rsquo;t you guess, Frank? Don&rsquo;t you remember my
-telling you that all the insects were asleep in their
-cases during winter.</p>
-<p>&ldquo;Each of these darker coloured cases contains a white
-butterfly. They have been here all winter, and they are
-just about to hatch out.&rdquo;</p>
-<p>&ldquo;How do you know that, Uncle George?&rdquo;</p>
-<p>&ldquo;I know it because the empty cases tell me that
-some of the butterflies have just hatched out. This is
-what your cabbage caterpillar becomes after he is tired
-of feeding.</p>
-<p>&ldquo;You have now seen three different stages of the life
-of this insect. First, the curious eggs laid on the under
-side of the cabbage leaf; next the greedy caterpillar;
-and now, the chrysalis or <i>pupa</i> stage.</p>
-<p>&ldquo;The caterpillar goes to sleep in autumn as a hard-cased
-chrysalis, and wakes up in spring a beautiful
-butterfly.&rdquo;</p>
-<p>&ldquo;How strange,&rdquo; said Frank. &ldquo;And will our caterpillars
-remain caterpillars until autumn, and then tuck
-<span class="pb" id="Page_84">84</span>
-themselves up like this and go to sleep for the
-winter.&rdquo;</p>
-<p>&ldquo;No, Frank! our caterpillars will go into the chrysalis
-state in a week or so, and hatch out as butterflies in
-August. These August butterflies will lay eggs. The
-caterpillars from these eggs will turn into <i>pup&aelig;</i> in
-September.</p>
-<p>&ldquo;These September pup&aelig; will supply the white butterflies
-of next spring and summer. Put some of these
-into your box. Watch then carefully, and you may be
-lucky enough to see the white butterfly coming out of
-his winter case.&rdquo;</p>
-<p>&ldquo;I cannot understand,&rdquo; said Tom, &ldquo;how a big white
-butterfly can be inside so small a case. It must be very
-tightly wrapped up.&rdquo;</p>
-<p>&ldquo;So it is, as you will see,&rdquo; said Uncle George.
-&ldquo;Good-bye, boys! and mind, when I come back, I shall
-expect to see notes and sketches of all that has taken
-place in the larva cage during my absence.&rdquo;</p>
-<p class="center"><span class="gs">* * * * * * * *</span></p><p>&ldquo;Won&rsquo;t you let your uncle take his dinner first,&rdquo;
-said Frank&rsquo;s mother, as she hung Uncle George&rsquo;s
-overcoat up in the hall.</p>
-<p>&ldquo;No, mother! he must come at once,&rdquo; said the
-excited Frank. &ldquo;There&rsquo;s a butterfly just coming out.&rdquo;</p>
-<p>&ldquo;Oh, I must come and see that,&rdquo; said Uncle George;
-and he allowed his eager nephews to drag him towards
-the larva cage.</p>
-<p>By the time they got to the cage the butterfly had
-hatched, but they were in time to see it unfurl its wings.
-The wings were crumpled and twisted, but the creature
-slowly straightened them out to dry in the sun.</p>
-<div class="pb" id="Page_85">85</div>
-<p>&ldquo;We saw it burst its case,&rdquo; said Tom. &ldquo;First a
-small slit appeared at the head end. This slit grew
-larger. Then the butterfly&rsquo;s head and feet appeared.
-It squeezed its way and was just half way out, with its
-wings crumpled round it, when you arrived.&rdquo;</p>
-<p>&ldquo;I arrived just a minute too late, then,&rdquo; said his
-uncle.</p>
-<div class="img" id="fig37">
-<img src="images/illus87.jpg" alt="" width="500" height="338" />
-<p class="caption">White or Cabbage Butterfly and Pupa.</p>
-</div>
-<p>&ldquo;Oh, and the eggs have hatched too,&rdquo; said Tom.
-&ldquo;Look at them now, Uncle George!&rdquo;</p>
-<p>His uncle looked, and saw that the white patches
-of eggs had given place to larger patches of little active,
-dark coloured maggots.</p>
-<p>&ldquo;We want to know what has become of the lovely
-carved shells of the eggs,&rdquo; said Tom.</p>
-<p>&ldquo;They have been eaten up,&rdquo; his uncle replied.
-&ldquo;From the moment a caterpillar is born he does nothing
-<span class="pb" id="Page_86">86</span>
-but eat&mdash;eat&mdash;eat. He begins by eating the shell of
-the egg he comes out of.</p>
-<p>&ldquo;For the first week of their lives these tiny caterpillars
-feed together in small bands, and they grow so
-fast you can almost fancy you see them growing.
-After they have grown to a certain size, each caterpillar
-starts out for himself.&rdquo;</p>
-<p>&ldquo;Do you see the three butterflies that have hatched
-out?&rdquo; asked Tom.</p>
-<p>&ldquo;Yes, I see them. There are two females and one
-male,&rdquo; said Uncle George.</p>
-<p>&ldquo;How can you tell males from females?&rdquo; asked
-Frank.</p>
-<p>&ldquo;Oh, that is easy enough,&rdquo; Uncle George replied.
-&ldquo;The females are larger, and have two big black spots
-on each of their front wings. But I only see eight of
-the large cabbage caterpillars. We put in twelve,
-I think.&rdquo;</p>
-<p>&ldquo;Look!&rdquo; said Frank, pointing to the roof of the
-cage.</p>
-<p>&ldquo;Ah, yes, I see them. Two of them have passed into
-the pup&aelig; stage, and are slung up by their silken belts
-to the wall of the cage.</p>
-<p>&ldquo;The other two are spinning silken belts round the
-middle of their bodies, if they have not already done so.
-After this belt is finished they will slowly slip their
-useless green skins off, and finally get rid of them by
-sharply jerking the tail end of their pupa cases.&rdquo;</p>
-<p>&ldquo;Yes, we watched those other two do that,&rdquo; said
-Tom.</p>
-<p>&ldquo;Notice,&rdquo; continued Uncle George, &ldquo;that all your
-big cabbage caterpillars have lost their yellow stripes
-<span class="pb" id="Page_87">87</span>
-and are now of a bluish green colour. They have
-stopped feeding, and are now dull and sleepy. This
-indicates that they are about to enter the pupa stage.&rdquo;</p>
-<p>&ldquo;But look at the currant and the hairy caterpillars,
-uncle,&rdquo; said Frank.</p>
-<p>&ldquo;My dear boy,&rdquo; said Frank&rsquo;s mother, &ldquo;Uncle George
-must really have food and rest after his long journey.
-He will hear about the other caterpillars some other
-time.&rdquo;</p>
-<h3>Exercises on Lesson XIII.</h3>
-<dl class="ex"><dt>1. Explain why the pup&aelig; of white butterflies are coloured like the objects they are attached to.</dt>
-<dt>2. Write the life of a white butterfly, and illustrate your description with sketches of caterpillar, pupa, and butterfly.</dt>
-<dt>3. The life of an insect is divided into four distinct stages. Name them. Which is the longest stage in the case of the white butterfly?</dt>
-<dt>4. Describe, as you have observed it, the behaviour of a caterpillar as it passes from the larva to the chrysalis form.</dt></dl>
-<div class="pb" id="Page_88">88</div>
-<h2 id="c14">XIV.&mdash;THE TOILING CADDIS.</h2>
-<p>&ldquo;Look here, boys,&rdquo; said Uncle George, &ldquo;you have
-been paying nearly all your attention to the larva cage
-during my absence, and have forgotten the caddis
-worms.&rdquo;</p>
-<div class="img" id="fig38">
-<img src="images/illus90.jpg" alt="" width="500" height="367" />
-<dl class="undent"><dt>1. Caddis Cases.</dt>
-<dt>2. Larva out of Case.</dt>
-<dt>3. Pupa.</dt>
-<dt>4. Caddis Fly.</dt></dl>
-</div>
-<p>Uncle George made believe to be cross.</p>
-<p>&ldquo;We changed the water every two days,&rdquo; said
-Frank.</p>
-<p>&ldquo;Yes, I know. But you have not reported any
-changes in the creatures themselves. What has been
-going on in the larva cage has also been going on
-here in the water, for caddis worms are simply water-caterpillars.
-<span class="pb" id="Page_89">89</span>
-You nearly missed something of very great
-interest.&rdquo;</p>
-<p>Uncle George laid three saucers on the table, and
-continued:&mdash;</p>
-<p>&ldquo;We are going to look into the life of the caddis
-fly to-day; but before I take them out of the water, I
-want you to tell me what you have noted about them
-up to now.&rdquo;</p>
-<p>&ldquo;They are always climbing up the water weeds,&rdquo;
-said Frank.</p>
-<p>&ldquo;They are always adding to their cases,&rdquo; said
-Tom.</p>
-<p>&ldquo;Some of them have died,&rdquo; said Frank.</p>
-<p>&ldquo;What?&rdquo; said his uncle. &ldquo;Do you mean these at
-the bottom of the tank? These are not dead, they
-are only asleep. Put your hand in, and take some of
-these out.&rdquo;</p>
-<p>&ldquo;Their cases are stuck to the pond weeds and to
-each other,&rdquo; said Frank, as he lifted a few out, and
-placed them in a saucer.</p>
-<p>&ldquo;Ah, I have it, Uncle George! They have gone into
-the pupa state. Is that not so?&rdquo;</p>
-<p>Uncle George nodded.</p>
-<p>&ldquo;Look!&rdquo; exclaimed Tom. &ldquo;There are things like
-earwigs floating on the water.&rdquo;</p>
-<p>&ldquo;Never mind these just now, Tom,&rdquo; said his uncle.
-&ldquo;I am coming to them by and by. Observe the
-wonderful cases which the caddis worms have made
-for themselves.</p>
-<p>&ldquo;Here is one whose case, when we found him, was
-made of neatly cut pieces of water rush. He has
-almost doubled the length of his case since then; for
-<span class="pb" id="Page_90">90</span>
-see, the front half is made of cut stalks of water weed
-neatly arranged.&rdquo;</p>
-<p>&ldquo;He has got a fine collar of green pieces round
-his neck,&rdquo; Frank observed.</p>
-<p>&ldquo;Why are they always adding to the length of their
-cases?&rdquo; asked Tom.</p>
-<p>&ldquo;Because they are always growing,&rdquo; said Frank.</p>
-<p>&ldquo;That is the reason,&rdquo; said Uncle George; &ldquo;and they
-grow so fast that they have actually to work hard at
-building.</p>
-<p>&ldquo;Observe those that make their cases out of tiny
-shells and stones. They have made free use of the
-coloured beads and small pieces of coal which we
-put in.&rdquo;</p>
-<p>&ldquo;How do they manage to stick these things
-together?&rdquo; asked Tom.</p>
-<p>&ldquo;A caddis worm is a busy creature,&rdquo; his uncle
-replied. &ldquo;He does two things besides eating and growing.
-With those strong pincers, which you see at his
-head, he saws off pieces of weed.</p>
-<p>&ldquo;Near his mouth he has got a kind of loom for
-spinning silk. These pieces are stuck together with
-silk, which is a gluey substance when it first comes
-from the creature&rsquo;s body.</p>
-<p>&ldquo;These rough cases are lined with silk.&rdquo;</p>
-<p>&ldquo;Why does he have to make a house for himself,
-and carry it about with him?&rdquo; said Frank.</p>
-<p>In answer to this, his uncle took out a few of the
-active caddis worms, and placed them in a saucer with
-water. He held one up.</p>
-<p>&ldquo;You see,&rdquo; he said, &ldquo;his case is open at both
-ends. Now, if I tried to get him out from the front,
-<span class="pb" id="Page_91">91</span>
-I should never manage it. This is the way to get
-him out.&rdquo;</p>
-<p>As he spoke, Uncle George pushed the head of a
-pin into the tail end of the case, and the creature
-scrambled out at once.</p>
-<p>&ldquo;It is too bad turning you out of your cosy room,
-Mr Caddis,&rdquo; Uncle George observed; &ldquo;but you&rsquo;ll go
-back again as soon as you get the chance, won&rsquo;t you?
-I want my nephews to understand why you work so
-very hard.</p>
-<p>&ldquo;Now, Frank, you can answer your own question,
-I think&mdash;&lsquo;Why does the caddis worm build a house?&rsquo;&rdquo;</p>
-<p>&ldquo;Because he has a soft body.&rdquo;</p>
-<p>&ldquo;Quite right. But why is he forced to protect his
-body?&rdquo;</p>
-<p>&ldquo;Fishes would eat him.&rdquo;</p>
-<p>&ldquo;Right again, Frank. If trout could speak, they
-might tell you that the sweetest morsel in the stream
-is the caddis worm. Now, take your lens, please, and
-tell me something about him.&rdquo;</p>
-<p>&ldquo;His body is divided into rings, and there are the
-same number of them as we found in the caterpillar.&rdquo;</p>
-<p>&ldquo;Very good, Frank. Now give Tom a chance.&rdquo;</p>
-<p>&ldquo;His head and the first three divisions of his body
-are hard cased. They are black and yellow in
-colour.&rdquo;</p>
-<p>&ldquo;He has six legs,&rdquo; said Frank, &ldquo;and they are
-attached to the first three divisions of his body.&rdquo;</p>
-<p>&ldquo;What about the last division of his body?&rdquo; Uncle
-George asked.</p>
-<p>&ldquo;Oh, how funny!&rdquo; said Frank. &ldquo;It is divided into
-two large things like horns.&rdquo;</p>
-<div class="pb" id="Page_92">92</div>
-<p>&ldquo;These,&rdquo; said his uncle, &ldquo;are the hooks by which
-he fixes himself so firmly in his case.&rdquo;</p>
-<p>&ldquo;And what are all these curious big bristles for?&rdquo;
-asked Tom. &ldquo;They are all over his body.&rdquo;</p>
-<p>&ldquo;These are his breathing organs,&rdquo; Uncle George
-answered. &ldquo;The caterpillar, if you remember, had
-breathing-holes along the sides of his body. By moving
-his long body, the caddis worm causes a constant
-current of water to pass through his dwelling.</p>
-<p>&ldquo;Look at the fourth segment of his body. How
-does it differ from the others?&rdquo;</p>
-<p>&ldquo;It is the broadest segment,&rdquo; said Frank, &ldquo;and
-there is a stout rounded thing in the middle
-of it.&rdquo;</p>
-<p>&ldquo;Yes,&rdquo; his uncle replied, &ldquo;and if we can get him
-turned on his back we shall see two more of these
-stout outgrowths below, one on each side of the same
-segment. This is really very clever. By it the animal
-keeps himself in the middle, so that the current of
-water must flow all around him.</p>
-<p>&ldquo;Now, look at the case of a sleeping caddis.&rdquo;</p>
-<p>&ldquo;The front of the case is closed,&rdquo; said Frank.</p>
-<p>&ldquo;How is it closed, Frank?&rdquo;</p>
-<p>&ldquo;Well, there is a network of threads over it,&rdquo;
-answered Frank.</p>
-<p>&ldquo;Yes; you see a caddis worm cannot do without
-fresh water, even when he is asleep; so, before going
-to sleep, he builds a grating over the entrance.</p>
-<p>&ldquo;When he wakes up, he has quite a new shape
-altogether. And this brings us to those things which
-Tom said were like &lsquo;earwigs.&rsquo; There are five of them
-floating on the water, and two of these are dead. If
-<span class="pb" id="Page_93">93</span>
-you look, you will find five empty caddis cases in the
-tank.&rdquo;</p>
-<p>&ldquo;How does he get out of the case?&rdquo; inquired Tom.</p>
-<p>&ldquo;Easily enough. Look at the strong pair of pincers
-he has got for cutting his way through the silken
-grating with. No longer burdened with his heavy case,
-he floats up to the surface. He crawls up out of the
-water into the air.</p>
-<p>&ldquo;If there are no rushes or floating leaves about, he
-is sure to drown; for your caddis is no longer a water
-insect, but a fly inside a thin skin.</p>
-<p>&ldquo;Now, boys, I am going to show you something
-wonderful.&rdquo;</p>
-<p>Uncle George then took out the three living pup&aelig;
-that were floating on the water, and placed them on
-the table. The boys watched them for a long time.</p>
-<p>They were beginning to get impatient, when suddenly
-the skin of one of the creatures burst along the back,
-and a lovely little fly, with brown, gauzy wings and
-long feelers, came out.</p>
-<p>After airing its wings for about a minute, it flew
-to the window. The other two acted in just the same
-way.</p>
-<p>&ldquo;Now, my dear boys, I think you know something
-about the life of the caddis fly. For a whole year of
-his life he is a crawling water insect, then, for about
-a single day, he is a lively fly.&rdquo;</p>
-<p>&ldquo;How does the caddis larva first get into the
-water?&rdquo; asked Frank.</p>
-<p>&ldquo;As an egg, Frank. The female caddis fly lays her
-eggs in the water. She sometimes even crawls down
-right into the water to lay them.</p>
-<div class="pb" id="Page_94">94</div>
-<p>&ldquo;A tiny caddis grub, no bigger than this pin-head,
-comes out of each egg. As soon as he hatches out,
-he begins to build his case, to eat, and to grow; and
-from the moment of his birth up to the closing up of
-his tube, he is scarcely a moment idle.&rdquo;</p>
-<h3>Exercises on Lesson XIV.</h3>
-<dl class="ex"><dt>1. Turn a caddis worm out of his case in the way described in the lesson. Place the insect in a saucer half filled with water, and make a rough sketch of it.</dt>
-<dt>2. When you have finished your sketch, place the empty caddis case in the saucer, and watch how the creature gets into it.</dt>
-<dt>3. Make two columns by drawing a line down the centre of a page of your note-book. In the first column, describe the structure of the caddis larva and fly; in the second, that of the cabbage caterpillar and butterfly. Compare them.</dt>
-<dt>4. In the same way describe the <i>mode of life</i> of the caddis fly (Column 1), and of the white butterfly (Column 2).</dt></dl>
-<div class="pb" id="Page_95">95</div>
-<h2 id="c15">APPENDIX.
-<br />HINTS TO TEACHERS.</h2>
-<p><b>BUDS.</b>&mdash;Twigs of beech, horse-chestnut, lilac, and hawthorn ought to
-be taken in in December and placed in water. They should have as much
-warmth and light as possible.</p>
-<p>Willow twigs (for catkins) might also be forced in this way.</p>
-<p><b>SEEDS.</b>&mdash;Seeds should be soaked for twenty-four hours and then
-sown in sawdust in boxes 4 inches deep. They should be sown in
-presence of the pupils.</p>
-<p>In winter these boxes should be kept on the hot pipes in school. The
-sawdust should not be allowed to get dry, neither should it be deluged with
-water, but kept evenly moist if possible.</p>
-<p>Be careful to use water <i>not colder than the temperature of the room</i>
-in which the seeds are grown. Nothing checks growth more effectively
-than chilling with icy-cold water. It is a good plan to keep the watering-pan
-full of water near the hot pipes, refilling it always after use.</p>
-<p>Seeds germinate best in the dark, but whenever the plumule shows above
-the sawdust, the box containing them should be placed in the light.
-Sufficient seeds should be sown at one time to supply a plant to each pupil
-once a week for at least four weeks. A number of seeds or plants should be
-dug up once a week and sketched by the children. Each sketch should be
-compared with that of the previous week, and all changes duly noted down.</p>
-<p>The best seeds to grow are:&mdash;Broad bean, common or &ldquo;large white&rdquo;
-maize, runner bean (&ldquo;Painted Lady&rdquo;), French bean, kitchen pea
-(&ldquo;Stratagem&rdquo;), and white mustard.</p>
-<p>A few seeds of white mustard should be sprinkled on a small piece of
-moist blotting-paper, and covered over by a small glass bell-jar or an
-inverted tumbler. In less than a week the root-hairs may be seen.</p>
-<p>If hot-water pipes are available, the following seeds should be grown,
-as their germination is interesting:&mdash;date stones, walnuts, chestnuts,
-almonds, cherry stones, orange pips, seeds of cucumber and sunflower.</p>
-<p>After maize and bean (or pea) plants have reached the height of
-5 inches, they should be transferred to bottles of tap water&mdash;as described
-at the end of Lesson VI.&mdash;and the continuous growth sketched and
-noted from week to week.</p>
-<p><b>POND AND DITCH HUNTING.</b>&mdash;Make a ring of stout brass wire
-about 8 or 10 inches in diameter, and to this attach a bag net made of
-mosquito netting not more than 9 inches deep. In making the wire
-ring, leave attached to it about 5 inches of the twisted ends of the wire.
-Such a net as this can be easily carried and quickly attached to the
-end of a walking-stick by means of a piece of string.</p>
-<p>The best &ldquo;finds&rdquo; are often made by sweeping the net under banks
-and among pond weeds.</p>
-<p><b>FROG SPAWN.</b>&mdash;Frog spawn is abundant in ponds and ditches
-everywhere in March. It should be kept immersed in as much water
-as possible in a large vessel, preferably of glass. Whenever the water
-show signs of fouling, it should be changed; but, as changing water
-containing tadpoles is somewhat difficult, the fewer changes the better.</p>
-<p>As in the case of seed growing, the development of the tadpole
-should be learnt by weekly sketches and notes.</p>
-<p><b>NEWTS.</b>&mdash;Newts can be taken with the gauze-net or in the following
-way:&mdash;Tie a piece of small worm on to the end of a cotton thread
-<span class="pb" id="Page_96">96</span>
-fastened to the end of a willow or hazel switch. Cast into the part
-of the pond where the newts are, and await results.</p>
-<p>Live newts, fish, frog spawn, etc., may be obtained from Messrs
-Willson, Live Stock Providers, 37 New Oxford Street, London; Thomas
-Bolton, 25 Balsall Heath Road, Birmingham, and other dealers. Newts
-should be fed once a day on pieces of small worms.</p>
-<p><b>CATERPILLARS.</b>&mdash;Caterpillars and pup&aelig;, if not obtainable in local
-woods, fields, and gardens, can be had from Messrs Watkins &amp; Doncaster,
-36 Strand, London, and others.</p>
-<p><b>CADDIS LARV&AElig;.</b>&mdash;Caddis worms are to be found in almost every
-stream, pond, and ditch. Most of them are vegetable feeders: therefore
-a plentiful supply of water weeds should be placed in their tank.
-Carnivorous caddis worms may be fed on small pieces of raw meat.
-(See Stickle-backs.)</p>
-<p><b>STICKLE-BACKS.</b>&mdash;Stickle-backs are common in canals and streams.
-They are easily caught with the net. They should be fed once a day
-on grated biscuit, and occasionally on raw meat. The meat should be
-chopped very fine, and then pressed through a piece of perforated zinc.
-Very little food suffices. If too much is put in, the residue should be removed
-by means of a glass tube, as described in Lesson IX., p. 56. If no green
-water plants are obtainable, the water should be changed at least every
-second day by means of a siphon. Once a month is quite often enough if
-sufficient green plants are kept in the tank and decaying matter carefully
-removed. Do not over-stock&mdash;few fishes and much water is the rule.</p>
-<p><b>WATER PLANTS.</b>&mdash;It is best to take the water plants which are
-found growing locally. The following are fairly common:&mdash;<i>Elodea canadensis</i>,
-water millfoil; <i>Potamogeton</i> (<i>nitens</i>, <i>crispus</i>, or <i>filiformis</i>),
-&ldquo;water soldier&rdquo;; <i>Vallisneria spiralis</i>, <i>Chara</i>, <i>Nitella</i>, water star-wort
-and watercress. A good selection of excellent aquarium plants are advertised
-at a cheap rate by the Solway Fishery Co., Dumfries. Water
-plants, if not rooted in the tank, should be renewed occasionally.</p>
-<p><b>LARV&AElig; CAGE.</b>&mdash;Take four square pieces (about 1&frac12; inches square)
-of wood, each a foot long, and nail or screw them upright into the four
-corners of a square piece of &frac34;-inch deal measuring a foot each way.
-Stretch mosquito netting over sides, end, and top, arranging that one side
-can be opened. This can be managed by fastening the last fold of
-netting to one of the upright posts by three drawing-pins. Fresh
-leaves should be supplied daily. For those caterpillars which pupate in
-the soil, a shallow earthenware flower-pot&mdash;known in the trade as a
-&ldquo;seed-pan&rdquo;&mdash;should be supplied. The seed-pan should be filled with
-soil, the pup&aelig; placed on the surface, and a layer of moss placed over
-them. Once a week the moss should be dipped in water, squeezed
-almost dry, and replaced on the pup&aelig;.</p>
-<p><b>AQUARIUM.</b>&mdash;Procure from a local florist or seedsman what is
-known as a &ldquo;propagating bell.&rdquo; These cost from 1s. up to 2s. 6d. A
-block of wood 12 inches square and 4 or 5 inches in thickness is also
-required. Bore a hole about 2 inches in diameter right through the
-centre of the block, to hold the knob of the bell. Then, with a gouge
-chisel, make a saucer-shaped hollow round the hole, to roughly fit the
-rounded end of the bell. Before fitting the bell into the block, interpose
-a thin layer of moss.</p>
-<p>This makes an excellent aquarium&mdash;elegant and serviceable. Keep
-the aquarium in a window, but shade it from bright sunlight.</p>
-<h2>Transcriber&rsquo;s Notes</h2>
-<ul><li>Retained publication information from the printed exemplar (this eBook is in the public domain in the country of publication.)</li>
-<li>Only in the text versions, delimited italicized text with _underscores_.</li>
-<li>Silently corrected several typos.</li></ul>
-
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-
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-
-
-<pre>
-
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