The Origin of Species: By Means of Natural Selection Or the Preservation of Favoured Races in the Struggle for LifeCastle Books, 2004 - Всего страниц: 703 The instant best-seller and source of controversy of 1859, this classic has lost none of its appeal or importance. A reprint of the original edition, value priced with a new jacket. |
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Стр. 53
... important , whether viewed under a physiological or classificatory point of view , sometimes vary in the individuals ... important characters , and that there are not many men who will laboriously examine internal and important organs ...
... important , whether viewed under a physiological or classificatory point of view , sometimes vary in the individuals ... important characters , and that there are not many men who will laboriously examine internal and important organs ...
Стр. 54
... important organs , and compare them in many specimens of the same species . It would never have been ex- pected that ... important organs never vary ; for these same authors practically rank those parts as important ( as some few ...
... important organs , and compare them in many specimens of the same species . It would never have been ex- pected that ... important organs never vary ; for these same authors practically rank those parts as important ( as some few ...
Стр. 574
... important organs , such as those for pro- pelling the blood , or for aerating it , or those for pro- pagating the race , are found nearly uniform , they are considered as highly serviceable in classification ; but in some groups all ...
... important organs , such as those for pro- pelling the blood , or for aerating it , or those for pro- pagating the race , are found nearly uniform , they are considered as highly serviceable in classification ; but in some groups all ...
Содержание
CHAPTER I | 5 |
Variability Individual differences Doubtful species Wide | 51 |
STRUGGLE FOR EXISTENCE | 75 |
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Часто встречающиеся слова и выражения
adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continent crossed crustaceans degree developed difficulty distinct species divergence doubt eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs Origin of Species paleozoic parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked remarked resemblance rudimentary seeds slight South America stamens sterility structure successive supposed theory tion trees variability variations varieties vary whilst whole wings young