Chapters on EvolutionG. P. Putnam's Sons, 1883 - Всего страниц: 383 |
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Стр. 6
... firstly , of what evolution at large is and implies ; and , secondly , of the proofs and arguments on which the existence and operation of this process may legitimately be based . A brief statement of the Darwinian theory of evolution ...
... firstly , of what evolution at large is and implies ; and , secondly , of the proofs and arguments on which the existence and operation of this process may legitimately be based . A brief statement of the Darwinian theory of evolution ...
Стр. 7
... Firstly . Every species of animals and plants tends to vary to a greater or less degree from the specific type . No two indi- viduals are alike in every respect ; each inherits from its parents a general likeness or resemblance to the ...
... Firstly . Every species of animals and plants tends to vary to a greater or less degree from the specific type . No two indi- viduals are alike in every respect ; each inherits from its parents a general likeness or resemblance to the ...
Стр. 19
... firstly , the subdivision Anatomy , which deals with the structure of the fully developed ( or adult ) animal or plant . Next in order comes Development - a study all - important , as we shall hereafter see , in the eyes of modern ...
... firstly , the subdivision Anatomy , which deals with the structure of the fully developed ( or adult ) animal or plant . Next in order comes Development - a study all - important , as we shall hereafter see , in the eyes of modern ...
Стр. 27
... firstly , of all Vertebrates in general , and , secondly , of all other quadrupeds in particular . Kangaroo - development stops short , so to speak , at a lower level than the development of such an animal as a dog , and at considerably ...
... firstly , of all Vertebrates in general , and , secondly , of all other quadrupeds in particular . Kangaroo - development stops short , so to speak , at a lower level than the development of such an animal as a dog , and at considerably ...
Стр. 30
... firstly , represent a family which never entered Australia . They were plentifully existent in Europe and elsewhere in the Oolitic period ; and even nearer our own day - namely , in the Eocene and Miocene formations — the opossums lived ...
... firstly , represent a family which never entered Australia . They were plentifully existent in Europe and elsewhere in the Oolitic period ; and even nearer our own day - namely , in the Eocene and Miocene formations — the opossums lived ...
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adult air-bladder animal or plant animal world animalcule animals and plants appear appendages ascidian Axolotl barnacle become biological bird body bone buds Campodea cells changes chiton cilia colonial common connected constitution crab cross-fertilisation crustaceans curious Darwin degeneration descent discover epoch evolution evolutionist exhibit existence extinct fact favour fertilisation firstly fish flowers formation fossils 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 named naturalist nature Nauplius neighbours notochord organisation organs origin pairs period phases pistil pollen pollen-grains possess present primitive primrose produced protoplasm pteropod quadrupeds race regarded remarks represented reptiles resemblance Sacculina scientific sea-squirt seen skull special creation species sponge stage stamens Starfishes structure tail theory tion to-day trace variation vertebrate whilst wings worm young zoophyte