Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1884 - Всего страниц: 351 |
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Стр. 4
... namely , the several species of Big- nonia , Eccremocarpus , Cobæa , and Ampelopsis . But even in the thickets of our temperate regions the number of climbing species and individuals is considerable , as will be found by counting them ...
... namely , the several species of Big- nonia , Eccremocarpus , Cobæa , and Ampelopsis . But even in the thickets of our temperate regions the number of climbing species and individuals is considerable , as will be found by counting them ...
Стр. 6
... namely , that the individuals of the same species growing in a state of nature near together have not really been subjected during several previous generations to quite the same conditions . POTENCY OF THE SEXUAL ELEMENTS IN PLANTS ...
... namely , that the individuals of the same species growing in a state of nature near together have not really been subjected during several previous generations to quite the same conditions . POTENCY OF THE SEXUAL ELEMENTS IN PLANTS ...
Стр. 17
... namely , females , which produce a heavy crop of fruit ; of hermaphrodites , which " seldom produce other than a very scanty crop of inferior and imperfect berries " ; and of males , which produce none . The most skillful cul- tivators ...
... namely , females , which produce a heavy crop of fruit ; of hermaphrodites , which " seldom produce other than a very scanty crop of inferior and imperfect berries " ; and of males , which produce none . The most skillful cul- tivators ...
Стр. 18
... namely , one anther and two generally confluent stigmas ; with the third stigma modified into the rostellum and incapable of being fer- tilized ; and with three of the anthers no longer function- ally active , but serving either to ...
... namely , one anther and two generally confluent stigmas ; with the third stigma modified into the rostellum and incapable of being fer- tilized ; and with three of the anthers no longer function- ally active , but serving either to ...
Стр. 20
... namely , by less and less nectar being secreted from the inner membrane , with more and more retained within the intercellular spaces . Other analogous cases could be given . Although an organ may not have been originally formed for ...
... namely , by less and less nectar being secreted from the inner membrane , with more and more retained within the intercellular spaces . Other analogous cases could be given . Although an organ may not have been originally formed for ...
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Darwinism Stated by Darwin Himself: Characteristic Passages from the ... Charles Darwin Полный просмотр - 1884 |
Darwinism Stated by Darwin Himself: Characteristic Passages from the ... Charles Darwin Полный просмотр - 1890 |
Darwinism stated by Darwin himself: Characteristic passages from the ... Charles Darwin Ограниченный просмотр - 2023 |
Часто встречающиеся слова и выражения
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
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Стр. i - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
Стр. 347 - It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent upon each other in so complex a manner, have all been produced by laws acting around us.
Стр. 110 - To suppose that the eye, with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest possible degree.
Стр. 72 - The key is man's power of accumulative selection: nature gives successive variations; man adds them up in certain directions useful to him. In this sense he may be said to have made for himself useful breeds.
Стр. 254 - It is incredible that all these facts should speak falsely. He who is not content to look, like a savage, at the phenomena of nature as disconnected, cannot any longer believe that man is the work of a separate act of creation.
Стр. 44 - It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organised creatures.
Стр. 308 - But as my conclusions have lately been much misrepresented, and it has been stated that I attribute the modification of species exclusively to natural selection, I may be permitted to remark that in the first edition of this work, and subsequently, I placed in a most conspicuous position — namely, at the close of the Introduction — the following words: "I am convinced that natural selection has been the main but not thé exclusive means of modification.