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. 37
... flowers in the different varieties of the same species in the flower - garden ; the diversity of leaves , pods , or tubers , or whatever part is valued , in the kitchen - garden , in comparison with the flowers of the same varieties ...
... flowers in the different varieties of the same species in the flower - garden ; the diversity of leaves , pods , or tubers , or whatever part is valued , in the kitchen - garden , in comparison with the flowers of the same varieties ...
Стр. 269
... flowers of two kinds , -the one open of the ordinary structure , the other closed and imperfect . These two kinds of flowers sometimes differ wonder- fully in structure , yet may be seen to graduate into each other on the same plant ...
... flowers of two kinds , -the one open of the ordinary structure , the other closed and imperfect . These two kinds of flowers sometimes differ wonder- fully in structure , yet may be seen to graduate into each other on the same plant ...
Стр. 270
... flowers of these species ; the style is aborted ; and the ovaria are reduced from three to two . Now although natural selection may well have had the power to pre- vent some of the flowers from expanding , and to reduce the amount of ...
... flowers of these species ; the style is aborted ; and the ovaria are reduced from three to two . Now although natural selection may well have had the power to pre- vent some of the flowers from expanding , and to reduce the amount of ...
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