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 67
... members of the same genus or class having nearly similar habits of life . With respect to the number of individuals or commonness of species , the comparison of course relates only to the CHAP . II . ] DOMINANT SPECIES VARY MOST . 67.
... members of the same genus or class having nearly similar habits of life . With respect to the number of individuals or commonness of species , the comparison of course relates only to the CHAP . II . ] DOMINANT SPECIES VARY MOST . 67.
Página 180
... respect to the development of the corolla , Sprengel's idea that the ray - florets serve to attract insects , whose agency is highly advantageous or neces- sary for the fertilisation of these plants , is highly probable ; and if so ...
... respect to the development of the corolla , Sprengel's idea that the ray - florets serve to attract insects , whose agency is highly advantageous or neces- sary for the fertilisation of these plants , is highly probable ; and if so ...
Página 287
... respect the mouth of a whale . From the highly developed structure of the shoveller's beak we may proceed ( as I ... respects through that of the Aix sponsa , to the beak of the common duck . In this latter species , the lamellæ are much ...
... respect the mouth of a whale . From the highly developed structure of the shoveller's beak we may proceed ( as I ... respects through that of the Aix sponsa , to the beak of the common duck . In this latter species , the lamellæ are much ...
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