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. 138
... seen under many natural circumstances . In an ex- tremely small area , especially if freely open to immigra tion , and where the contest between individual and individual must be very severe , we always find great diversity in its ...
... seen under many natural circumstances . In an ex- tremely small area , especially if freely open to immigra tion , and where the contest between individual and individual must be very severe , we always find great diversity in its ...
Стр. 199
... seen in duns , and I have seen a trace in a bay horse . My son made a careful examination and sketch for me of a dun Belgian cart - horse with a double stripe on each shoulder and with leg - stripes ; I have myself seen a dun Devonshire ...
... seen in duns , and I have seen a trace in a bay horse . My son made a careful examination and sketch for me of a dun Belgian cart - horse with a double stripe on each shoulder and with leg - stripes ; I have myself seen a dun Devonshire ...
Стр. 220
... seen and heard it hammering the seeds of the yew on a branch , and thus breaking them like a nuthatch . In North America the black bear was seen by Hearne swimming for hours with widely open mouth , thus catching , almost like a whale ...
... seen and heard it hammering the seeds of the yew on a branch , and thus breaking them like a nuthatch . In North America the black bear was seen by Hearne swimming for hours with widely open mouth , thus catching , almost like a whale ...
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