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! |
Dentro del libro
Resultados 1-3 de 7
Página 85
... mountain , we far oftener meet with stunted forms , due to the directly injurious action of climate , than we do in proceeding southwards or in descending a mountain . When we reach the Arctic regions , or snow - capped summits , or ...
... mountain , we far oftener meet with stunted forms , due to the directly injurious action of climate , than we do in proceeding southwards or in descending a mountain . When we reach the Arctic regions , or snow - capped summits , or ...
Página 210
... mountains , and sometimes it is quite remark- able how abruptly , as Alph . de Candolle has observed , a common alpine species disappears . The same fact has been noticed by E. Forbes in sounding the depths of the sea with the dredge ...
... mountains , and sometimes it is quite remark- able how abruptly , as Alph . de Candolle has observed , a common alpine species disappears . The same fact has been noticed by E. Forbes in sounding the depths of the sea with the dredge ...
Página 213
... mountains or on the plains , improving their breeds more quickly than the small holders on the intermediate narrow , hilly tract ; and consequently the improved mountain or plain breed will soon take the place of the less improved hill ...
... mountains or on the plains , improving their breeds more quickly than the small holders on the intermediate narrow , hilly tract ; and consequently the improved mountain or plain breed will soon take the place of the less improved hill ...
Contenido
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
Derechos de autor | |
Otras 5 secciones no mostradas
Otras ediciones - Ver todas
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