Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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... widely prevalent movement is essentially of the same nature as that of the stem of a climbing plant , which bends suc- cessively to all points of the compass , so that the tip revolves . This movement has been called by Sachs " re ...
... widely prevalent movement is essentially of the same nature as that of the stem of a climbing plant , which bends suc- cessively to all points of the compass , so that the tip revolves . This movement has been called by Sachs " re ...
Стр. 8
... widely dispersed by natural means , and one of the above two plants , or one of their ancestors , may have come from a distance , from a more shady or sunny , dry or moist place , or from a different kind of soil containing other ...
... widely dispersed by natural means , and one of the above two plants , or one of their ancestors , may have come from a distance , from a more shady or sunny , dry or moist place , or from a different kind of soil containing other ...
Стр. 12
... widely different habits of life of men and women in civilized nations , especially among the upper classes , would tend to counterbalance any evil from marriages between healthy and somewhat closely related persons . DEVELOPMENT OF THE ...
... widely different habits of life of men and women in civilized nations , especially among the upper classes , would tend to counterbalance any evil from marriages between healthy and somewhat closely related persons . DEVELOPMENT OF THE ...
Стр. 18
... widely distinct species . 66 AN IDEAL TYPE " OR INEVITABLE MODIFICATION ? Fertilization of Orchids by Insects , page 245 . It is interesting to look at one of the mag- nificent exotic species ( orchids ) , or , indeed , at one of our ...
... widely distinct species . 66 AN IDEAL TYPE " OR INEVITABLE MODIFICATION ? Fertilization of Orchids by Insects , page 245 . It is interesting to look at one of the mag- nificent exotic species ( orchids ) , or , indeed , at one of our ...
Стр. 19
... widely in order that the pollinium should be easily withdrawn ; but , in the Bee ophrys , the caudicle , by a slight increase in length and decrease in its thickness , and by the anther opening a little more widely , becomes specially ...
... widely in order that the pollinium should be easily withdrawn ; but , in the Bee ophrys , the caudicle , by a slight increase in length and decrease in its thickness , and by the anther opening a little more widely , becomes specially ...
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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