Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. vi
... distinct meaning of the word ' natural ' is stated , fixed , or settled ; since what is natural as much requires and pre- supposes an intelligent agent to render it so , i . e . , to effect it con- tinually or at stated times , as what ...
... distinct meaning of the word ' natural ' is stated , fixed , or settled ; since what is natural as much requires and pre- supposes an intelligent agent to render it so , i . e . , to effect it con- tinually or at stated times , as what ...
Стр. 6
... distinct individuals , but from such individuals having been subjected during pre- vious generations to different conditions , or to their having varied in a manner commonly called spontaneous , so that in either case their sexual ...
... distinct individuals , but from such individuals having been subjected during pre- vious generations to different conditions , or to their having varied in a manner commonly called spontaneous , so that in either case their sexual ...
Стр. 13
... distinct individuals , especially if their progenitors have been subjected to very different conditions , have an immense advantage in height , weight , constitutional vigor and fertility over the self- fertilized offspring from one of ...
... distinct individuals , especially if their progenitors have been subjected to very different conditions , have an immense advantage in height , weight , constitutional vigor and fertility over the self- fertilized offspring from one of ...
Стр. 14
... distinct in- dividuals . In some instances the sexes may have been reseparated for the sake of preventing too frequent self- fertilization ; but this explanation does not seem prob- able , as the same end might have been gained by other ...
... distinct in- dividuals . In some instances the sexes may have been reseparated for the sake of preventing too frequent self- fertilization ; but this explanation does not seem prob- able , as the same end might have been gained by other ...
Стр. 17
... distinct species . Another and still more remark- able incidental result is that the seedlings from an ille- gitimate union are often dwarfed and more or less com- pletely barren , like hybrids from the union of two. THE MOVEMENTS AND ...
... distinct species . Another and still more remark- able incidental result is that the seedlings from an ille- gitimate union are often dwarfed and more or less com- pletely barren , like hybrids from the union of two. THE MOVEMENTS AND ...
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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