The Study of Animal LifeScribner, 1892 - Всего страниц: 375 |
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action activity adult Amphibians animals ants backboned become begin Biology birds bivalves body brain buds called carbonic carbonic acid Chambers's Encyclop changes characteristic ciliated colony colour complex corals crab creatures crustaceans cuttlefish Darwin division of labour earth Echinoderms egg-cell eggs embryo Encyclopædia energy Erasmus Darwin evolution Evolution of Sex fact female fertilised fishes food-canal freshwater frog function grow habit Haeckel heredity higher animals hydroid illustration individual influence Infusorians insects instincts jellyfish kinds lancelet larvæ less life-history living matter Lond male mammals mates medusoids molluscs Natural History natural selection naturalists nervous nest notochord observed offspring organism origin ovum parasites parents plants progress Protists protoplasm Protozoa recognise regard reproductive cells reptiles result Rotifers sea-anemones seems shells simplest animals skin sometimes species spermatozoa spiders sponges strange structure substances suggest surroundings theory tion tissues units variations Vertebrate worms young Zoea zoology