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 48
... . Wallace has remarked with much truth , a limit will be at last reached . For instance , there must be a limit to the fleetness of any terrestrial animal , as this will be determined by the 48 CIRCUMSTANCES FAVOURABLE TO SELECTION .
... . Wallace has remarked with much truth , a limit will be at last reached . For instance , there must be a limit to the fleetness of any terrestrial animal , as this will be determined by the 48 CIRCUMSTANCES FAVOURABLE TO SELECTION .
Página 123
... terrestrial animal which can fertilise itself . This remarkable fact , which offers so strong a contrast with terrestrial plants , is intelligible on the view of an occasional cross being indispensable ; for owing to the nature of the ...
... terrestrial animal which can fertilise itself . This remarkable fact , which offers so strong a contrast with terrestrial plants , is intelligible on the view of an occasional cross being indispensable ; for owing to the nature of the ...
Página 281
... terrestrial carnivorous animals of considerable size , and bats into terrestrial insectivorous animals ; for the former there would be no prey ; for the bats ground- insects would serve as food , but these would already be largely ...
... terrestrial carnivorous animals of considerable size , and bats into terrestrial insectivorous animals ; for the former there would be no prey ; for the bats ground- insects would serve as food , but these would already be largely ...
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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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