Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. iv
... probably be a long while before the dispute over the theory that he advocated will cease , but there is certainly no excuse for a difference of opinion with regard to the language that he used , and the meaning he attached to it . That ...
... probably be a long while before the dispute over the theory that he advocated will cease , but there is certainly no excuse for a difference of opinion with regard to the language that he used , and the meaning he attached to it . That ...
Стр. 7
... probably connected with some corresponding , though often quite imperceptible , change in structure or compo- sition . Whatever affects an organism in any way , likewise tends to act on its sexual elements . We see this in the ...
... probably connected with some corresponding , though often quite imperceptible , change in structure or compo- sition . Whatever affects an organism in any way , likewise tends to act on its sexual elements . We see this in the ...
Стр. 9
... probably be affected by the mere cir- cumstance of having long lain dormant ; for gardeners believe that the production of double flowers , and of fruit , is thus influenced . Seeds , moreover , which were matured during different ...
... probably be affected by the mere cir- cumstance of having long lain dormant ; for gardeners believe that the production of double flowers , and of fruit , is thus influenced . Seeds , moreover , which were matured during different ...
Стр. 10
... probably is with animals from too close interbreeding . The effects of close interbreeding on animals , judging again from plants , would be deterioration in general vigor , including fertility , with no necessary loss of excellence of ...
... probably is with animals from too close interbreeding . The effects of close interbreeding on animals , judging again from plants , would be deterioration in general vigor , including fertility , with no necessary loss of excellence of ...
Стр. 12
... probably in hermaph- rodite animals , are special adaptations for securing an occasional cross between two individuals ; and that the advantages from such a cross depend altogether on the beings which are united , or their progenitors ...
... probably in hermaph- rodite animals , are special adaptations for securing an occasional cross between two individuals ; and that the advantages from such a cross depend altogether on the beings which are united , or their progenitors ...
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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