Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1884 - 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 42 43 Intelligence of Worms 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 42 43 Intelligence of Worms 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 . 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 . 7.
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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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