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! |
Результаты поиска по книге
Результаты 1 – 3 из 52
Стр. 207
... DIFFICULTIES OF THE THEORY . Difficulties of the theory of descent with modification - Absence or rarity of ... difficulty - Natura non facit saltum - Organs of small importance - Organs not in all cases absolutely perfect - The ...
... DIFFICULTIES OF THE THEORY . Difficulties of the theory of descent with modification - Absence or rarity of ... difficulty - Natura non facit saltum - Organs of small importance - Organs not in all cases absolutely perfect - The ...
Стр. 236
... difficulty of an organ , apparently the same , arising in several remotely allied species , disappears , leaving only the lesser yet still great difficulty ; namely , by what graduated steps these organs have been developed in each ...
... difficulty of an organ , apparently the same , arising in several remotely allied species , disappears , leaving only the lesser yet still great difficulty ; namely , by what graduated steps these organs have been developed in each ...
Стр. 356
... difficulty , which at first appeared to me insuperable , and actually fatal to the whole theory . I allude to the neuters or sterile females in insect - communities ; for these neuters often differ widely in instinct and in structure ...
... difficulty , which at first appeared to me insuperable , and actually fatal to the whole theory . I allude to the neuters or sterile females in insect - communities ; for these neuters often differ widely in instinct and in structure ...
Содержание
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
Авторские права | |
Не показаны другие разделы: 5
Другие издания - Просмотреть все
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