Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. ix
... Seeds . Practical Application of these Views . Marriages of First Cousins Development of the Two Sexes in Plants Why the Sexes have been reseparated Comparative Fertility of Male and Female Plants Effect of Climate on Reproduction ...
... Seeds . Practical Application of these Views . Marriages of First Cousins Development of the Two Sexes in Plants Why the Sexes have been reseparated Comparative Fertility of Male and Female Plants Effect of Climate on Reproduction ...
Стр. x
... Seed Intelligence of Worms 42 • 43 45 III . THE LAWS OF VARIABILITY WITH RESPECT TO ANIMALS AND PLANTS . Inherited Effect of Changed Habits Effects of the Use and Disuse of Parts Vague Origin of our Domestic Animals Descent of the ...
... Seed Intelligence of Worms 42 • 43 45 III . THE LAWS OF VARIABILITY WITH RESPECT TO ANIMALS AND PLANTS . Inherited Effect of Changed Habits Effects of the Use and Disuse of Parts Vague Origin of our Domestic Animals Descent of the ...
Стр. 7
... seed- lings . Under such circumstances , the chemical consti- tution of their fluids and the nature of their tissues are often modified ... seeds . But it may be said , granting that changed conditions. THE MOVEMENTS AND HABITS OF PLANTS .
... seed- lings . Under such circumstances , the chemical consti- tution of their fluids and the nature of their tissues are often modified ... seeds . But it may be said , granting that changed conditions. THE MOVEMENTS AND HABITS OF PLANTS .
Стр. 8
... seeds thus obtained produced flower - stems in number as 100 to 47 , and in average height as 100 to 70. Therefore , the cross between these two ... SEEDS . Seeds often lie. 8 DARWINISM STATED BY DARWIN HIMSELF . Experiments in Crossing.
... seeds thus obtained produced flower - stems in number as 100 to 47 , and in average height as 100 to 70. Therefore , the cross between these two ... SEEDS . Seeds often lie. 8 DARWINISM STATED BY DARWIN HIMSELF . Experiments in Crossing.
Стр. 9
... SEEDS . Seeds often lie dormant for several years Page 449 . in the ground , and germinate when brought near the surface by any means , as by burrowing ani- mals . They would probably be affected by the mere cir- cumstance of having ...
... SEEDS . Seeds often lie dormant for several years Page 449 . in the ground , and germinate when brought near the surface by any means , as by burrowing ani- mals . They would probably be affected by the mere cir- cumstance of having ...
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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