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 133
... follows from this , that as the favoured forms increase in number , so , generally , will the less favoured decrease and become rare . Rarity , as geology tells us , is the precursor to extinction . We can see that any form which is ...
... follows from this , that as the favoured forms increase in number , so , generally , will the less favoured decrease and become rare . Rarity , as geology tells us , is the precursor to extinction . We can see that any form which is ...
Página 259
... follows from the principle of natural selection . On the other hand , the common rule throughout nature is infinite diversity of structure for gaining the same end ; and this again naturally follows from the same great principle . In ...
... follows from the principle of natural selection . On the other hand , the common rule throughout nature is infinite diversity of structure for gaining the same end ; and this again naturally follows from the same great principle . In ...
Página 280
... follow that the necessary parts should always vary in the right direction and to the right degree . With the different species of our domesticated animals we know that the parts vary in a different manner and degree ; and that some ...
... follow that the necessary parts should always vary in the right direction and to the right degree . With the different species of our domesticated animals we know that the parts vary in a different manner and degree ; and that some ...
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