The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life, Volume 1 |
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Page 21
... origin of most of our domestic animals will probably for ever remain vague . But I may here state , that , looking to the domestic dogs of the whole world , I have , after a laborious collection of all known facts , come to the ...
... origin of most of our domestic animals will probably for ever remain vague . But I may here state , that , looking to the domestic dogs of the whole world , I have , after a laborious collection of all known facts , come to the ...
Page 27
... origin of our pigeons , it must be assumed that at least seven or eight species were so thoroughly domesticated in ancient times by half - civilised man , as to be quite prolific under confinement . An argument of great weight , and ...
... origin of our pigeons , it must be assumed that at least seven or eight species were so thoroughly domesticated in ancient times by half - civilised man , as to be quite prolific under confinement . An argument of great weight , and ...
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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 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 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 structure struggle supposed swimbladder tend tendency tion transitional tree variability variations varieties vary widely wings young