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 xi
... existing groups . On earth adhering to the feet of migratory birds . On the wide geographical range of a species of Galaxias , a fresh - water fish . Discussion on analogical resemblances , enlarged and modified . Homological structure ...
... existing groups . On earth adhering to the feet of migratory birds . On the wide geographical range of a species of Galaxias , a fresh - water fish . Discussion on analogical resemblances , enlarged and modified . Homological structure ...
Página xiii
... existing forms of life are the descendants by true generation of pre - existing forms . Passing over allusions to the sub- ject in the classical writers , * the first author who in * Aristotle , in his ' Physicæ Auscultationes ' ( lib ...
... existing forms of life are the descendants by true generation of pre - existing forms . Passing over allusions to the sub- ject in the classical writers , * the first author who in * Aristotle , in his ' Physicæ Auscultationes ' ( lib ...
Página xiv
... existing forms , and much to use and disuse , that is , to the effects of habit . To this latter agency he seems to attribute all the beautiful adaptations in nature ; -such as the long neck of the giraffe for browsing on the by an ...
... existing forms , and much to use and disuse , that is , to the effects of habit . To this latter agency he seems to attribute all the beautiful adaptations in nature ; -such as the long neck of the giraffe for browsing on the by an ...
Página xv
... existing species are now undergoing modification ; and , as his son adds , " C'est donc un problème à réserver entièrement à l'avenir , supposé même que l'avenir doive avoir prise sur lui . " In 1813 , Dr. W. C. Wells read before the ...
... existing species are now undergoing modification ; and , as his son adds , " C'est donc un problème à réserver entièrement à l'avenir , supposé même que l'avenir doive avoir prise sur lui . " In 1813 , Dr. W. C. Wells read before the ...
Página xvi
... existing , a darker and a darker race would in the course of time occur : and as the darkest would be the best fitted for the climate , this would at length become the most prevalent , if not the only race , in the particular country in ...
... existing , a darker and a darker race would in the course of time occur : and as the darkest would be the best fitted for the climate , this would at length become the most prevalent , if not the only race , in the particular country in ...
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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