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Show Are Lovcr Animals ' Really Alive ? By Herbert N. Caaaoa more that scientists study life ,C leas diu"eii iiie do they I1111I lu-twee 11 wliut wo cull ui-nd ilunta mid wlmt we cull lie tlllllKS. Ihe lulest bwk ou this 'iin-ailou ,a eullnl "The i..iupnra-tle i..iupnra-tle I'hyalology of the llrsln.'' .y r.. lessor Juiipua 1.01I1, of t'hli-UKO I nlverslty. It Is I'K. -i a. leutnlc hooka - hard to read lor Ihoae who want aulurtlm.g exi Itlnij There uro two kinds of In-uk.. iSome ure l.ke aiiuily benches und some ure like gold mlitev ii. uudy lunch l.oks ore for those who like play better than they like soti. lin y nuiitae ynu. nnd help you tu forget your lroiil.li-a; but after ynu bave not tliwiiuli nitli 1I1.111 you have nothing h-rt to keep Hint la vnlmllile. The gold mine Imoka ure illfTereut. Whenever )oti r I one of them, you hsvn to work hard. You dig up the Ideas out r ihe long senieines. You break up the big words Hint stick nut here Bud time like , ka. Ilol when your wurk Is over you bnve aome gold left anil yoUr tiilnd Is stronger beemiae of the vigorous exercise. In Professor I.iu-li's hook there is a rbapierim iuatim-ta." whleh upsets a gr-nt many of our Ideas on living things nnd dead Hiinta, 11,. sajs Hint thou-minds thou-minds or the lower nnlmnls lire nothing but inn. him a. "1 hey mo not con-scions con-scions any more tliuii a glnas of s.aln wuler it cea-o uuia. In fact, they ure nothing but little bundles of chemicals. Take a nioili. for Instance. Why does It ilnuys ny Inward Ihe light? la It tiii-auae it Is fond of tho light? Does It hue u.i Instluet in fnvor of bright objects? No. says Professor l."eb. Nothing of the kind, a nuns lo Ihe light for the samo rcaaon that a pine board will wnrp If you leave II out In the sunshine. It curves In Its Might nnd Hies Into the llmne fur th,. sumo rinsou that a plant turns In the sunshine when It stnnds in the. win,!, It Is not true that cither plants or ninths nr.- f,,d of !v:it. Their likes or dislikes bave nothing to do with the mutter. Tiny arc Just ns helpless as a photograph Is when II bends and wrinkles from the li.-.it of a stove. When a moth Is Hying st the side of a lamp or elei-iric light the rays of light tighten up the musi-les of the moth ou tbe s .do ht is uemest to tho llht mid wutp It n round until It llles dire.ily Into the tluz,.. The plants that niovo toward the ami rum around fur the same renaoti. The rajs of light tighten up the shlo of tin' stem th.it la nearest to tho sun, mid slowly Hie plant swings around until It facia the light. Its movement Is c.iui-cl by the chemical (-fleet of light. Yon may havo inn d, In tho springtime, lmw Hi" llltlo caterpillars come out of the net and cllnib up lo tlio tips of the liniii.ius, win re tin. soft juiing leaves nre. How do they know that tln-e leaves nro the best food for caterpillars? And bow do they know, wllliuut being tuii;ht, that these leavis are always nt the tips "of the brunches? They don't know iinyllilng nhout it, tays Trofesaor I.neb. As soon ns they come out of Ihe neat tbe rays of light from llio ami warp their bo.Viea In such a n-uy Hint they cannot help climbing upwards. Tin y are little nuiiiiliiea. ulnioat like the tin toys that the peddlers sell on the lilewulks. Tho Inallncts of tlicso llltlo moths and ciirrpillura can bo changed. If a bright electric light were to bo placed al the foot of every tree that lias caterpillar nests on It tho young caterpillar! would enmo marching down the tree to starvation and death. Theso curious Ideas, 1 hope you will remember, sra not fancies or guesses. Professor I.oeb lias examined dnscm of Inotlii and doicna of caterpillars and dnxrns of plants, to find out why they art al tbey do. If you think Hint hla Ideas are absurd, yon can find nut the facts by getting more 11 otha ami caterpillars and plants than be baa, and by studying tbem mora carefully than be did. New York J our nab |