Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1884 - Всего страниц: 351 |
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Стр. 10
... progenitors to different conditions , or from their having intercrossed with individuals thus exposed ; or , lastly , from what we call in our ignorance spontaneous variation . He therefore who wishes to pair closely related animals ...
... progenitors to different conditions , or from their having intercrossed with individuals thus exposed ; or , lastly , from what we call in our ignorance spontaneous variation . He therefore who wishes to pair closely related animals ...
Стр. 12
... progenitors , having had their sexual elements somewhat differentiated , so that the embyro is benefited in the same manner as is a mature plant or animal by a slight change in its condi- tions of life , although in a much higher degree ...
... progenitors , having had their sexual elements somewhat differentiated , so that the embyro is benefited in the same manner as is a mature plant or animal by a slight change in its condi- tions of life , although in a much higher degree ...
Стр. 13
... 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 the same parents . And this fact is amply ...
... 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 the same parents . And this fact is amply ...
Стр. 45
... progenitors of the worms which act in the described manner . Nor are their actions so unvarying or inevitable as are most true instincts . As worms are not guided by special instincts in each THE PART PLAYED BY WORMS . 45 Intelligence ...
... progenitors of the worms which act in the described manner . Nor are their actions so unvarying or inevitable as are most true instincts . As worms are not guided by special instincts in each THE PART PLAYED BY WORMS . 45 Intelligence ...
Стр. 50
... progenitor of the ostrich genus had habits like those of the bustard , and that , as the size and weight of its body were increased during successive generations , its legs were used more , and its wings less , until they be- came ...
... progenitor of the ostrich genus had habits like those of the bustard , and that , as the size and weight of its body were increased during successive generations , its legs were used more , and its wings less , until they be- came ...
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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