Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1884 - Всего страниц: 351 |
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Стр. 47
... breed , in accordance with a preconceived idea ; and by thus adding up variations , often so slight as to be imperceptible by an uneducated eye , he has effected wonderful changes and improvements . It can , also , be clearly shown that ...
... breed , in accordance with a preconceived idea ; and by thus adding up variations , often so slight as to be imperceptible by an uneducated eye , he has effected wonderful changes and improvements . It can , also , be clearly shown that ...
Стр. 48
Characteristic Passages from the Writings of Charles Darwin Charles Darwin. of improving the breed , by preserving in ... breeds show adaptation to his wants and pleas- ures . We can further understand how it is that domestic races of ...
Characteristic Passages from the Writings of Charles Darwin Charles Darwin. of improving the breed , by preserving in ... breeds show adaptation to his wants and pleas- ures . We can further understand how it is that domestic races of ...
Стр. 52
... breeds ; and that some of these ancient breeds closely resemble or are even identical with , those still existing . But this only throws far backward the history of civilization , and shows that animals were domesticated at a much ...
... breeds ; and that some of these ancient breeds closely resemble or are even identical with , those still existing . But this only throws far backward the history of civilization , and shows that animals were domesticated at a much ...
Стр. 53
... breeds are not varieties , and have not pro- ceeded from the rock - pigeon , they must have descended from at least seven or eight aboriginal stocks ; for it is impossible to make the present domestic breeds by the crossing of any ...
... breeds are not varieties , and have not pro- ceeded from the rock - pigeon , they must have descended from at least seven or eight aboriginal stocks ; for it is impossible to make the present domestic breeds by the crossing of any ...
Стр. 54
... breed- ing on precipices , and good fliers , are unlikely to be ex- terminated ; and the common rock - pigeon , which has the same habits with the domestic breeds , has not been exter- minated even on several of the smaller British ...
... breed- ing on precipices , and good fliers , are unlikely to be ex- terminated ; and the common rock - pigeon , which has the same habits with the domestic breeds , has not been exter- minated even on several of the smaller British ...
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Darwinism stated by Darwin himself: Characteristic passages from the ... Charles Darwin Ограниченный просмотр - 2023 |
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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