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. 123
... occasionally carried from tree to tree . That trees belonging to all Orders have their sexes more often separated ... occasional cross being indispensable ; for owing to the nature of the fertilising element there are no means ...
... occasionally carried from tree to tree . That trees belonging to all Orders have their sexes more often separated ... occasional cross being indispensable ; for owing to the nature of the fertilising element there are no means ...
Стр. 124
... occasional influence of a distinct individual , can be shown to be physically impos- sible . Cirripedes long appeared to ... occasionally intercross , the difference between them and unisexual species is , as far as function is concerned ...
... occasional influence of a distinct individual , can be shown to be physically impos- sible . Cirripedes long appeared to ... occasionally intercross , the difference between them and unisexual species is , as far as function is concerned ...
Стр. 331
... occasionally laid an egg in another bird's nest . If the old bird profited by this occasional habit through being ... occasionally lays her eggs on the bare ground , sits on them , and feeds her young . This rare event is probably a case ...
... occasionally laid an egg in another bird's nest . If the old bird profited by this occasional habit through being ... occasionally lays her eggs on the bare ground , sits on them , and feeds her young . This rare event is probably a case ...
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