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 282
... acquired their wings by at first gliding through the air from tree to tree , like the so - called flying squirrels , for the sake of escaping from their enemies , or for avoiding falls ; but when the power of true flight had once been ...
... acquired their wings by at first gliding through the air from tree to tree , like the so - called flying squirrels , for the sake of escaping from their enemies , or for avoiding falls ; but when the power of true flight had once been ...
Página 321
... acquired by habit in one genera- tion , and then transmitted by inheritance to succeeding generations . It can be clearly shown that the most wonderful instincts with which we are acquainted , namely , those of the hive - bee and of ...
... acquired by habit in one genera- tion , and then transmitted by inheritance to succeeding generations . It can be clearly shown that the most wonderful instincts with which we are acquainted , namely , those of the hive - bee and of ...
Página 346
... acquired , through natural selection , her inimitable architectural powers . But this theory can be tested by experiment . Follow- ing the example of Mr. Tegetmeier , I separated two combs , and put between them a long , thick ...
... acquired , through natural selection , her inimitable architectural powers . But this theory can be tested by experiment . Follow- ing the example of Mr. Tegetmeier , I separated two combs , and put between them a long , thick ...
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