Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1884 - Всего страниц: 351 |
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Стр. 10
... variation . He therefore who wishes to pair closely related animals ought to keep them under conditions as different as possible . As some kinds of plants suffer much more Page 459 . from self - fertilization than do others , so it ...
... variation . He therefore who wishes to pair closely related animals ought to keep them under conditions as different as possible . As some kinds of plants suffer much more Page 459 . from self - fertilization than do others , so it ...
Стр. 21
... variations in any one part were preserved from being beneficial to the plant , then the other parts would generally have to be modified in some corresponding manner . But these latter parts might not vary at all , or they might not vary ...
... variations in any one part were preserved from being beneficial to the plant , then the other parts would generally have to be modified in some corresponding manner . But these latter parts might not vary at all , or they might not vary ...
Стр. 22
... variations , until the flower was turned com- pletely round on its axis . This seems to have actually occurred with Malaxis paludosa , for the labellum has ac- quired its present upward position by the ovarium being twisted twice as ...
... variations , until the flower was turned com- pletely round on its axis . This seems to have actually occurred with Malaxis paludosa , for the labellum has ac- quired its present upward position by the ovarium being twisted twice as ...
Стр. 23
... variations which were beneficial to the organism under complex and ever - varying conditions of life , tran- scend in an incomparable manner the contrivances and adaptations which the most fertile imagination of man could invent . The ...
... variations which were beneficial to the organism under complex and ever - varying conditions of life , tran- scend in an incomparable manner the contrivances and adaptations which the most fertile imagination of man could invent . The ...
Стр. 45
... variations of some other habit ; and in this case the new habit will have been acquired independently of intelligence throughout the whole course of its devel- opment . There is no a priori improbability in worms having acquired special ...
... variations of some other habit ; and in this case the new habit will have been acquired independently of intelligence throughout the whole course of its devel- opment . There is no a priori improbability in worms having acquired special ...
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Darwinism Stated by Darwin Himself: Characteristic Passages from the ... Charles Darwin Полный просмотр - 1884 |
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Darwinism stated by Darwin himself: Characteristic passages from the ... Charles Darwin Ограниченный просмотр - 2023 |
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acquired action admit allied apes appear Asa Gray become believe birds blush body breeds Catarrhine cause characters closely Cloth Darwin degree descended developed distinct species domestic doubt early effects eggs existence expression extinct eyes fact favorable feel females fertilization forms gemmules genera geotropism habit hair HERBERT SPENCER hermaphrodites highly horse Illustrations increase individuals inhabitants inherited insects instance intermediate islands kind labellum lancelet language larvæ less living lower animals males mammals manner ment mental mind modified monkeys movements muscles natural selection naturalists observed offspring organic Origin of Species papillæ parent peculiar period plants pollen possess present principle probably produced Professor progenitors Quadrumana quadrupeds races remarkable resemble rudimentary savages seeds seems seen sexes sexual selection slight South America structure suppose T. H. HUXLEY tend tendency tion transmitted utricle variability variations varieties various vertebræ whole wild worms young