The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Volumen1AMS Press, 1972 - 479 páginas 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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Página 168
... quadrupeds . We may believe that the progenitor of the ostrich genus had habits like those of the bustard , and that , as the size and weight of its body were increased during successive generations , its legs were used more , and its ...
... quadrupeds . We may believe that the progenitor of the ostrich genus had habits like those of the bustard , and that , as the size and weight of its body were increased during successive generations , its legs were used more , and its ...
Página 280
... quadrupeds , for instance S. America , though it is so luxuriant ; whilst S. Africa abounds with them to an ... quadruped as the giraffe . In order that an animal should acquire some structure specially and largely developed , it is ...
... quadrupeds , for instance S. America , though it is so luxuriant ; whilst S. Africa abounds with them to an ... quadruped as the giraffe . In order that an animal should acquire some structure specially and largely developed , it is ...
Página 281
... quadrupeds have not acquired much elongated necks or other means for browsing on the higher branches of trees . Objections of the same nature as the foregoing have been advanced by many writers . In each case various causes , besides ...
... quadrupeds have not acquired much elongated necks or other means for browsing on the higher branches of trees . Objections of the same nature as the foregoing have been advanced by many writers . In each case various causes , besides ...
Contenido
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
Derechos de autor | |
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The Origin of Species by Means of Natural Selection: Or, the Preservation of ... Charles Darwin Sin vista previa disponible - 2016 |
On the Origin of Species by Means of Natural Selection Charles Darwin Sin vista previa disponible - 2016 |
The Origin of Species by Means of Natural Selection: Or the Preservation of ... Charles Darwin Sin vista previa disponible - 2018 |
Términos y frases comunes
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