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CHAPTERV_I
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ECONOMY OF THE BODY
I._ PRODUCTION AND TRANSPORT OF ENERGY
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FISHES must eat to live and the food must
many
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Changes before it becOmes stored in a COndition that may be
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energy ready to express itself fin a kinetic
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movement)“
-Theïprocesses of assimilation and
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excretio are—very much the samein all animals, but the
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apparatus Shows many degrees of SpecialisatiOn; we’ can
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hardly.say perfection. since we do not know What Would be
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the best. - As with the skeletonthe vari'otxs Organs of shes
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c0nnected’with the digestion and transport of food-“materials
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arisen owing to their utility, and one of the chief - ‘
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