Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. 4
... reasons already assigned , I can not believe that this explanation applies to the rapid movements from a delicate touch . Finally , climbing plants are sufficiently numerous to form a conspicuous feature in the vegetable kingdom , more ...
... reasons already assigned , I can not believe that this explanation applies to the rapid movements from a delicate touch . Finally , climbing plants are sufficiently numerous to form a conspicuous feature in the vegetable kingdom , more ...
Стр. 12
... reason to doubt that the widely different habits of life of men and women in civilized nations , especially among the upper classes , would tend to counterbalance any evil from marriages between healthy and somewhat closely related ...
... reason to doubt that the widely different habits of life of men and women in civilized nations , especially among the upper classes , would tend to counterbalance any evil from marriages between healthy and somewhat closely related ...
Стр. 17
... reason to be- lieve that the sterility of these unions has not been spe- cially acquired , but follows as an incidental result from the sexual elements of the two or three forms having been adapted to act on one another in a particular ...
... reason to be- lieve that the sterility of these unions has not been spe- cially acquired , but follows as an incidental result from the sexual elements of the two or three forms having been adapted to act on one another in a particular ...
Стр. 64
... reason why a peculiarity should appear at any particular age , yet that it does tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to be of the highest importance in ...
... reason why a peculiarity should appear at any particular age , yet that it does tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to be of the highest importance in ...
Стр. 73
... reason to believe that King Charles's spaniel has been unconsciously modified to a large extent since the time of that monarch . Some highly competent authori- ties are convinced that the setter is directly derived from the spaniel ...
... reason to believe that King Charles's spaniel has been unconsciously modified to a large extent since the time of that monarch . Some highly competent authori- ties are convinced that the setter is directly derived from the spaniel ...
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acid acquired action adapted admit allied animals apes appear become believe birds body breeds cause character climate closely compared cotyledons crossed degree descended developed distinct species disuse domestic doubt early effects eggs embryo existence extinct eyes fact female fertilization forms gemmules genera genus geotropism Glacial habits hairs hermaphrodites highly horses increase individuals inhabitants inherited insects instance instincts islands kinds labellum lancelet larvæ leaves less living lower animals Malaxis paludosa males mammals manner mental millimetre modified monkeys movements muscles natural selection naturalists observed occasionally offspring organs Origin of Species ovules papillæ parent peculiar period pigeon plants points pollen pollinium possess present prey probably produced progenitors Quadrumana quadrupeds races radicles remarkable resemble rudimentary savages seedlings seeds seems sexes sexual elements sexual selection slight structure suppose surface tend tendency tion transmitted utricle variability variations varieties various vertebræ whole wild worms young