Darwiniana: EssaysD. Appleton, 1897 - 475페이지 |
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7 페이지
... nearest mainland . On the other hand , there is hardly a species of fish , shell , or crab common to the opposite sides of the narrow isthmus of Panama.1 Wherever we look , then , living 80 I 7 THE DARWINIAN HYPOTHESIS.
... nearest mainland . On the other hand , there is hardly a species of fish , shell , or crab common to the opposite sides of the narrow isthmus of Panama.1 Wherever we look , then , living 80 I 7 THE DARWINIAN HYPOTHESIS.
26 페이지
... common peculi- arity of form or structure ; or , we may mean that they possess some common functional character . That part of biological science which deals with form and structure is called Morphology — that which concerns itself with ...
... common peculi- arity of form or structure ; or , we may mean that they possess some common functional character . That part of biological science which deals with form and structure is called Morphology — that which concerns itself with ...
29 페이지
... common animal , such as a salamander or newt . It is a minute spheroid in which the best microscope will reveal nothing but a structureless sac , enclosing a glairy fluid , holding granules in suspension.1 But strange possibilities lie ...
... common animal , such as a salamander or newt . It is a minute spheroid in which the best microscope will reveal nothing but a structureless sac , enclosing a glairy fluid , holding granules in suspension.1 But strange possibilities lie ...
39 페이지
... common ewe impregnated by an Ancon ram follows entirely the one or the other , without blending any of the distinguishing and essential peculiarities of both . Frequent instances have happened where common ewos have had twins by Ancon ...
... common ewe impregnated by an Ancon ram follows entirely the one or the other , without blending any of the distinguishing and essential peculiarities of both . Frequent instances have happened where common ewos have had twins by Ancon ...
42 페이지
... common stock is as astonishing as are the extreme structural differ- ences which they may present . A remarkable example of this is to be found in the rock - pigeon , which Mr. Darwin has , in our opinion , satisfactorily demonstrated ...
... common stock is as astonishing as are the extreme structural differ- ences which they may present . A remarkable example of this is to be found in the rock - pigeon , which Mr. Darwin has , in our opinion , satisfactorily demonstrated ...
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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