The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for LifeLovell, Coryell, 1872 - Всего страниц: 501 |
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Стр. 19
... breeds several truly - inherited sub - breeds , or species , as he would call them , could be shown him . Great as are the differences between the breeds of the pigeon , I am fully convinced that the common opinion of naturalists is ...
... breeds several truly - inherited sub - breeds , or species , as he would call them , could be shown him . Great as are the differences between the breeds of the pigeon , I am fully convinced that the common opinion of naturalists is ...
Стр. 21
... breeds very true ; the mongrels were dusky and mottled . I then crossed one of the mongrel barb - fantails with a mongrel barb - spot , and they produced a bird of as beautiful a blue color , with the white loins , double black wing ...
... breeds very true ; the mongrels were dusky and mottled . I then crossed one of the mongrel barb - fantails with a mongrel barb - spot , and they produced a bird of as beautiful a blue color , with the white loins , double black wing ...
Стр. 23
... breeds so often have a somewhat monstrous character . It is also a most favorable circumstance for the production of distinct breeds , that male and female pigeons can be easily mated for life ; and thus different breeds can be kept ...
... breeds so often have a somewhat monstrous character . It is also a most favorable circumstance for the production of distinct breeds , that male and female pigeons can be easily mated for life ; and thus different breeds can be kept ...
Другие издания - Просмотреть все
The Origin of Species by Means of Natural Selection: Or, The ..., Том 1 Charles Darwin Полный просмотр - 1889 |
The Origin of Species by Means of Natural Selection: Or, the ..., Том 1 Charles Darwin Полный просмотр - 1898 |
Часто встречающиеся слова и выражения
according action adapted admit allied America amount animals appear become believe belonging birds breeds called cause certain characters climate closely color common considered continuous crossed descendants developed difficulty distinct domestic doubt effects existing extinct extremely facts families favorable fertility flowers follow formation forms genera genus give given greater groups habits hand Hence hybrids important increase individuals inhabitants inherited insects instance instincts intermediate islands kind known land laws less living look male manner means modification namely natural selection naturalists nearly never observed occur organs origin parent perfect period plants points present preserved principle probably produced range ranked reason remarked resemble respect seeds seems seen shown side similar single slight sometimes species stage sterility structure successive supposed tend theory tion variability variations varieties various vary whole widely young