Chapters on EvolutionChatto & Windus, 1883 - Всего страниц: 383 |
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adult air-bladder Amoeba animal or plant animal world animalcule animals and plants appear appendages ascidian Axolotl barnacle become biological bird body bone buds Campodea carpels cells changes chiton cilia colonial common connected constitution crab cross-fertilisation crustaceans curious Darwin degeneration descent discover evolution exhibit existence fact favour fertilisation firstly fish flowers fossil frog geological germ gills higher animals idea illustrated individual insects jaws lampshells lancelet larva larvæ latter life-history likewise limbs living lobster marsupials ment metamorphosis missing links modification molluscs named naturalist nature Nauplius neighbours notochord organisation organs origin pairs phases pistil pollen pollen-grains possess present primitive primrose produced protoplasm pteropod quadrupeds race regarded remarks represented reptiles resemblance Sacculina scientific sea-squirt seen segments skull species spine sponge stage stamens Starfishes stigma structure tail theory tion to-day trace variation varied vertebrate whilst wings worm young zoophyte