The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Том 1AMS Press, 1972 - Всего страниц: 479 This is a reproduction of the original artefact. Generally these books are created from careful scans of the original. This allows us to preserve the book accurately and present it in the way the author intended. Since the original versions are generally quite old, there may occasionally be certain imperfections within these reproductions. We're happy to make these classics available again for future generations to enjoy! |
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Стр. 137
... greater number of plants and a greater weight of dry herbage can be raised in the latter than in the former case . The same has been found to hold good when one variety and several mixed varieties of wheat have been sown on equal spaces ...
... greater number of plants and a greater weight of dry herbage can be raised in the latter than in the former case . The same has been found to hold good when one variety and several mixed varieties of wheat have been sown on equal spaces ...
Стр. 316
... greater number of varieties than do the species in the smaller genera . The former are also grouped in little clusters , like varieties round species ; and they present other analogies with varieties , as was shown in our second chapter ...
... greater number of varieties than do the species in the smaller genera . The former are also grouped in little clusters , like varieties round species ; and they present other analogies with varieties , as was shown in our second chapter ...
Стр. 325
... greater wildness of all our large birds in comparison with our small birds ; for the large birds have been most persecuted by man . We may safely attribute the greater wildness of our large birds to this cause ; for in uninhabited ...
... greater wildness of all our large birds in comparison with our small birds ; for the large birds have been most persecuted by man . We may safely attribute the greater wildness of our large birds to this cause ; for in uninhabited ...
Содержание
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
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The Origin of Species by Means of Natural Selection: Or, the Preservation of ... Charles Darwin Недоступно для просмотра - 2016 |
The Origin of Species by Means of Natural Selection: Or the Preservation of ... Charles Darwin Недоступно для просмотра - 2018 |
Часто встречающиеся слова и выражения
acquired adapted advantage allied analogous animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely colour common crossed cuckoo degree developed difficulty distinct species disuse domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus giraffe gradations greater number groups habits Hence hermaphrodites hive-bee important improved increase in number individual differences inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less likewise males manner Melipona Mivart natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species perfect period pigeons pollen pollen-grains present preserved principle probably produced progenitor quadrupeds rank Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion transitional tree variability variations varieties vary widely wings young