The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, Volume 1D. Appleton, 1898 - Evolution |
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Page 10
... breed freely under confine- ment , even when the male and female unite . How many animals there are which will not breed , though kept in an almost free state in their native coun- try ! This is generally , but erroneously , attributed ...
... breed freely under confine- ment , even when the male and female unite . How many animals there are which will not breed , though kept in an almost free state in their native coun- try ! This is generally , but erroneously , attributed ...
Page 11
... breed in this country pretty freely under confinement , with the exception of the plantigrades or bear family , which seldom produce young ; whereas carnivorous birds , with the rarest ex- ceptions , hardly ever lay fertile eggs . Many ...
... breed in this country pretty freely under confinement , with the exception of the plantigrades or bear family , which seldom produce young ; whereas carnivorous birds , with the rarest ex- ceptions , hardly ever lay fertile eggs . Many ...
Page 13
... Breeders believe that long limbs are almost always accompanied by an elongated head . Some in- stances of correlation are quite whimsical : thus cats which are entirely white and have blue eyes are gen- erally deaf ; but it has been ...
... Breeders believe that long limbs are almost always accompanied by an elongated head . Some in- stances of correlation are quite whimsical : thus cats which are entirely white and have blue eyes are gen- erally deaf ; but it has been ...
Page 15
... breeds are often trans- mitted , either exclusively or in a much greater degree , to the males alone . A much more important rule , which I think may be trusted , is that , at whatever period of life a peculiarity first appears , it ...
... breeds are often trans- mitted , either exclusively or in a much greater degree , to the males alone . A much more important rule , which I think may be trusted , is that , at whatever period of life a peculiarity first appears , it ...
Page 17
... breed our cart and race - horses , long and short - horned cattle , and poultry of various breeds , and esculent vegetables , for an unlimited number of generations , would be opposed to all experience . Character of Domestic Varieties ...
... breed our cart and race - horses , long and short - horned cattle , and poultry of various breeds , and esculent vegetables , for an unlimited number of generations , would be opposed to all experience . Character of Domestic Varieties ...
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Common terms and phrases
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