Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. viii
... give up , science or the Bible . . . . It is but the evolu- tion of Genesis when each brings forth after its kind . ' Science tells the same story . But what is the limit of the fixedness of the law ? I believe that the evolution of new ...
... give up , science or the Bible . . . . It is but the evolu- tion of Genesis when each brings forth after its kind . ' Science tells the same story . But what is the limit of the fixedness of the law ? I believe that the evolution of new ...
Стр. 19
... give an instance : in all the Ophreæ , the long and nearly rigid caudicle manifestly serves for the application of the pollen - grains to the stigma , when the pollinia are transported by insects to another flower ; and the anther opens ...
... give an instance : in all the Ophreæ , the long and nearly rigid caudicle manifestly serves for the application of the pollen - grains to the stigma , when the pollinia are transported by insects to another flower ; and the anther opens ...
Стр. 21
... give a simple illustration : in many orchids the ovarium ( but sometimes the foot- stalk ) becomes for a period twisted , causing the labellum to assume the position of a lower petal , so that insects can easily visit the flower ; but ...
... give a simple illustration : in many orchids the ovarium ( but sometimes the foot- stalk ) becomes for a period twisted , causing the labellum to assume the position of a lower petal , so that insects can easily visit the flower ; but ...
Стр. 24
... give a distinct name to the so - called sleep- movements of plants . These have also generally been con- founded , under the term " periodic , " with the slight daily rise and fall of leaves , as described in the fourth chapter ; and ...
... give a distinct name to the so - called sleep- movements of plants . These have also generally been con- founded , under the term " periodic , " with the slight daily rise and fall of leaves , as described in the fourth chapter ; and ...
Стр. 32
... give the evidence . The secretion of many glands on thirty leaves , which had not been in any way excited , was tested with litmus - paper ; and the secretion of twenty - two of these leaves did not in the least affect the color ...
... give the evidence . The secretion of many glands on thirty leaves , which had not been in any way excited , was tested with litmus - paper ; and the secretion of twenty - two of these leaves did not in the least affect the color ...
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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