Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. xiv
... Parent - Stock 296 XIV . THE PROVISIONAL HYPOTHESIS OF PANGENESIS . Functional Independence of the Units of the Body . Necessary Assumptions 299 302 Two Objections answered Effect of Morbid Action Transmission limited . xiv CONTENTS .
... Parent - Stock 296 XIV . THE PROVISIONAL HYPOTHESIS OF PANGENESIS . Functional Independence of the Units of the Body . Necessary Assumptions 299 302 Two Objections answered Effect of Morbid Action Transmission limited . xiv CONTENTS .
Стр. 9
... parents or ancestors of our two plants of Digitalis may have been crossed by a dis- tant plant growing under somewhat different condi- tions . Plants thus crossed often produce an unusually large number of seeds ; a striking instance of ...
... parents or ancestors of our two plants of Digitalis may have been crossed by a dis- tant plant growing under somewhat different condi- tions . Plants thus crossed often produce an unusually large number of seeds ; a striking instance of ...
Стр. 10
... parents , and only in- directly on their relationship , in so far as they are apt to resemble each other in all respects , including their sexual nature . And , secondly , that the advantages of cross- fertilization depend on the sexual ...
... parents , and only in- directly on their relationship , in so far as they are apt to resemble each other in all respects , including their sexual nature . And , secondly , that the advantages of cross- fertilization depend on the sexual ...
Стр. 12
... parents and ancestors had lived under very different conditions , would be much less injurious than that of persons who had always lived in the same place and followed the same habits of life . Nor can I see reason to doubt that the ...
... parents and ancestors had lived under very different conditions , would be much less injurious than that of persons who had always lived in the same place and followed the same habits of life . Nor can I see reason to doubt that the ...
Стр. 13
... parents . And this fact is amply sufficient to account for the develop- ment of the sexual elements , that is , for the genesis of the two sexes . The It is a different question why the two sexes are some- times combined in the same ...
... parents . And this fact is amply sufficient to account for the develop- ment of the sexual elements , that is , for the genesis of the two sexes . The It is a different question why the two sexes are some- times combined in the same ...
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Часто встречающиеся слова и выражения
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