The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, Volumen1D. Appleton, 1898 |
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Página vii
... manner are highly variable ; specific characters more variable than generic : secondary sexual characters variable - Species of the same genus vary in an analogous manner - Reversions to long - lost characters - Summary . Page 164 ...
... manner are highly variable ; specific characters more variable than generic : secondary sexual characters variable - Species of the same genus vary in an analogous manner - Reversions to long - lost characters - Summary . Page 164 ...
Página xiii
... manner as to the other parts in which there appears to exist an adaptation to an end . Whereso- ever , therefore , all things together ( that is all the parts of one whole ) happened like as if they were made for the sake of some- thing ...
... manner as to the other parts in which there appears to exist an adaptation to an end . Whereso- ever , therefore , all things together ( that is all the parts of one whole ) happened like as if they were made for the sake of some- thing ...
Página xv
... manner in which similar views arise at about the same time , that Goethe in Germany , Dr. Darwin in England , and Geoffroy Saint- Hilaire ( as we shall immediately see ) in France , came to the same conclusion on the origin of species ...
... manner in which similar views arise at about the same time , that Goethe in Germany , Dr. Darwin in England , and Geoffroy Saint- Hilaire ( as we shall immediately see ) in France , came to the same conclusion on the origin of species ...
Página xxiii
... manner as varieties are under cultivation ; and the latter process he attributes to man's power of selec- tion . But he does not show how selection acts under nature . He believes , like Dean Herbert , that species , when nascent , were ...
... manner as varieties are under cultivation ; and the latter process he attributes to man's power of selec- tion . But he does not show how selection acts under nature . He believes , like Dean Herbert , that species , when nascent , were ...
Página xxv
... manner by the Rev. Baden Powell , in his Essays on the Unity of Worlds , ' 1855. Nothing can be more striking than the manner in which he shows that the introduction of new species is " a regular , not a casual phenomenon , " or , as ...
... manner by the Rev. Baden Powell , in his Essays on the Unity of Worlds , ' 1855. Nothing can be more striking than the manner in which he shows that the introduction of new species is " a regular , not a casual phenomenon , " or , as ...
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Términos y frases comunes
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 descendants developed difficulty distinct species disuse divergence 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 increase inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less males manner Melipona Mivart modified natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species parent perfect period pigeons pollen pollen-grains present preserved prey principle probably produced progenitor quadrupeds rank rarely Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion tree variability variations varieties vary widely wings young