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. 157
... complex relations , namely on the variations which have arisen , these being due to causes far too intricate to be followed out , -on the nature of the variations which have been preserved or selected , and this depends on the ...
... complex relations , namely on the variations which have arisen , these being due to causes far too intricate to be followed out , -on the nature of the variations which have been preserved or selected , and this depends on the ...
Стр. 322
... complex instinct can possibly be produced through natural selection , except by the slow and gradual accu- mulation of numerous slight , yet profitable , variations . Hence , as in the case of corporeal structures , we ought to find in ...
... complex instinct can possibly be produced through natural selection , except by the slow and gradual accu- mulation of numerous slight , yet profitable , variations . Hence , as in the case of corporeal structures , we ought to find in ...
Стр. 383
... complex laws governing the facility with which trees can be grafted on each other as incidental on unknown differences in their vegetative systems , so I believe that the still more complex laws governing the facility of first crosses ...
... complex laws governing the facility with which trees can be grafted on each other as incidental on unknown differences in their vegetative systems , so I believe that the still more complex laws governing the facility of first crosses ...
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