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 20
... descended from one or several wild species . The argument mainly relied on by those who believe in the multiple origin of our domestic animals is , that we find in the most ancient times , on the monuments of Egypt , and in the lake ...
... descended from one or several wild species . The argument mainly relied on by those who believe in the multiple origin of our domestic animals is , that we find in the most ancient times , on the monuments of Egypt , and in the lake ...
Página 21
... descended from a different aboriginal stock from our European cattle ; and some competent judges believe that these latter have had two or three wild progenitors , -whether or not these deserve to be called species . This conclusion ...
... descended from a different aboriginal stock from our European cattle ; and some competent judges believe that these latter have had two or three wild progenitors , -whether or not these deserve to be called species . This conclusion ...
Página 22
... descended from the common wild duck and rabbit . The doctrine of the origin of our several domestic races from several aboriginal stocks , has been carried to an absurd extreme by some authors . They believe that every race which breeds ...
... descended from the common wild duck and rabbit . The doctrine of the origin of our several domestic races from several aboriginal stocks , has been carried to an absurd extreme by some authors . They believe that every race which breeds ...
Página 26
... descended from the rock - pigeon ( Columba livia ) , in- cluding under this term several geographical races or sub - species , which differ from each other in the most trifling respects . As several of the reasons which have led me to ...
... descended from the rock - pigeon ( Columba livia ) , in- cluding under this term several geographical races or sub - species , which differ from each other in the most trifling respects . As several of the reasons which have led me to ...
Página 29
... descended from the rock - pigeon . But if we deny this , we must make one of the two following highly improbable suppositions . Either , first , that all the several imagined aboriginal stocks were coloured- and marked like the rock ...
... descended from the rock - pigeon . But if we deny this , we must make one of the two following highly improbable suppositions . Either , first , that all the several imagined aboriginal stocks were coloured- and marked like the rock ...
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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