Darwiniana: EssaysD. Appleton, 1897 - 475페이지 |
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5 페이지
... horses , and cats and dogs , lobsters and beetles , periwinkles and mussels , but even the very sponges and animalcules commence their existence under forms which are essentially undistinguishable ; and this is true of all the infinite ...
... horses , and cats and dogs , lobsters and beetles , periwinkles and mussels , but even the very sponges and animalcules commence their existence under forms which are essentially undistinguishable ; and this is true of all the infinite ...
17 페이지
... horses , were known only in a fossil state , no naturalist would hesitate in regarding them as distinct species . But in all these cases we have human interfer- ence . Without the breeder there would be no selection , and without the ...
... horses , were known only in a fossil state , no naturalist would hesitate in regarding them as distinct species . But in all these cases we have human interfer- ence . Without the breeder there would be no selection , and without the ...
27 페이지
... horses form a species , because the group of animals to which that name is applied is distinguished from all others ... horse , but sometimes with cal- losities only on the fore - legs , and more or less tufted tails ; or animals having ...
... horses form a species , because the group of animals to which that name is applied is distinguished from all others ... horse , but sometimes with cal- losities only on the fore - legs , and more or less tufted tails ; or animals having ...
41 페이지
... horse - dealers , and dog and poultry fanciers . Nay , it is only the other day that an eminent physiologist , Dr. Brown- Séquard , communicated to the Royal Society his discovery that epilepsy , artificially produced in guinea - pigs ...
... horse - dealers , and dog and poultry fanciers . Nay , it is only the other day that an eminent physiologist , Dr. Brown- Séquard , communicated to the Royal Society his discovery that epilepsy , artificially produced in guinea - pigs ...
45 페이지
... horse and the Arab , the pouter and the tumbler , breed together with perfect freedom , and their mongrels , if matched with other mongrels of the same kind , are equally fertile . On the other hand , there can be no doubt that the ...
... horse and the Arab , the pouter and the tumbler , breed together with perfect freedom , and their mongrels , if matched with other mongrels of the same kind , are equally fertile . On the other hand , there can be no doubt that the ...
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adapted Agamogenesis Ancon animalcules animals animals and plants appear beds biological birds body bones called carbonic acid causes character Charles Darwin common course creation cross curious Darwin Darwin's views deposited direct doctrine of evolution domestic pigeons doubt endeavour epigenesis epoch Erasmus Darwin evidence ex nihilo experiments extinct fact favour forms fossil geological germ groups horse Hyæna hypothesis ichthyosaurus inorganic world inquiry kind knowledge Lamarck lectures less living male matter means mind Mivart modification natural selection naturalists observation offspring operation organic nature organisation Origin of Species parent peculiar perpetuation phenomena physiological pigeons Pikermi Pouter present primitive stock produced Quarterly Reviewer question races reason remarkable result Rock Pigeon scientific selective breeding sense sheep skeleton sort speculations spontaneous structure Suarez substance suppose Teleology tendency theory thing tion toes variation varieties vary vegetable whole