The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifePenguin Books, 1982 - Всего страниц: 477 |
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Стр. 207
... continuous , that it has been continuous during a long period . Geology would lead us to believe that almost every continent has been broken up into islands even during the later tertiary periods ; and in such islands distinct species ...
... continuous , that it has been continuous during a long period . Geology would lead us to believe that almost every continent has been broken up into islands even during the later tertiary periods ; and in such islands distinct species ...
Стр. 208
... continuous areas ; though I do not doubt that the formerly broken condition of areas now continuous has played an important part in the formation of new species , more es- pecially with freely - crossing and wandering animals . In ...
... continuous areas ; though I do not doubt that the formerly broken condition of areas now continuous has played an important part in the formation of new species , more es- pecially with freely - crossing and wandering animals . In ...
Стр. 231
... continuous area , must often have been formed when the area was not continuous , and when the conditions of life did not insensibly graduate away from one part to another . When two varieties are formed in two districts of a continuous ...
... continuous area , must often have been formed when the area was not continuous , and when the conditions of life did not insensibly graduate away from one part to another . When two varieties are formed in two districts of a continuous ...
Содержание
EDITORS INTRODUCTION | 11 |
NOTE ON THIS EDITION | 49 |
INTRODUCTION | 65 |
Авторские права | |
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Другие издания - Просмотреть все
The Origin of Species by Means of Natural Selection: Or, The ..., Том 2 Charles Darwin Полный просмотр - 1897 |
The Origin of Species by Means of Natural Selection: Or the Preservation of ... Charles Darwin Ограниченный просмотр - 1982 |
The Origin of Species by Means of Natural Selection: Or, the Preservation of ... Charles Darwin Недоступно для просмотра - 2014 |
Часто встречающиеся слова и выражения
accumulated adapted affinities allied species America ancient animals appear become bees believe birds breeds cause cells chapter characters cirripedes climate closely allied colour continuous crossed crustaceans Darwin degree developed difficulty distinct species domestic doubt eggs embryo Europe existence exterminated extinct extremely facts favourable fertility flowers formation forms fossil genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvae less living male mammals manner Marsupials migration modification modified descendants natural selection naturalists nearly nest offspring organisation organs Origin Origin of Species palaeozoic perfect pigeons pistil plants pollen present principle probably produced progenitor quadrupeds ranked remarked reproductive resemblance rudimentary seeds seems sexual selection Silurian slight South America sterility structure struggle successive supposed tend theory tion trees variability variations varieties vary whole widely wings