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 11
... vary very slightly - perhaps hardly more than in a state of nature . Some naturalists have maintained that all variations are connected with the act of sexual reproduction ; but this is certainly an error ; for I have given in another ...
... vary very slightly - perhaps hardly more than in a state of nature . Some naturalists have maintained that all variations are connected with the act of sexual reproduction ; but this is certainly an error ; for I have given in another ...
Page 19
... vary , and likewise to withstand diverse climates . I do not dispute that these capacities have added largely to the value of most of our domes- ticated productions but how could a savage possibly know , when he first tamed an animal ...
... vary , and likewise to withstand diverse climates . I do not dispute that these capacities have added largely to the value of most of our domes- ticated productions but how could a savage possibly know , when he first tamed an animal ...
Page 20
... vary in succeeding generations , and whether it would endure other climates ? Has the little variability of the ass and goose , or the small power of endurance of warmth by the reindeer , or of cold by the common camel , prevented their ...
... vary in succeeding generations , and whether it would endure other climates ? Has the little variability of the ass and goose , or the small power of endurance of warmth by the reindeer , or of cold by the common camel , prevented their ...
Page 25
... varies in a highly remarkable manner . The caudal and sacral vertebræ vary in number ; as does the number of the ribs , together with their relative breadth and the pre- sence of processes . The size and shape of the apertures in the ...
... varies in a highly remarkable manner . The caudal and sacral vertebræ vary in number ; as does the number of the ribs , together with their relative breadth and the pre- sence of processes . The size and shape of the apertures in the ...
Page 33
... varies slightly , for they win their prizes by selecting such slight differences , yet they ignore all general arguments , and refuse to sum up in their minds slight differences accumulated during many successive generations . May not ...
... varies slightly , for they win their prizes by selecting such slight differences , yet they ignore all general arguments , and refuse to sum up in their minds slight differences accumulated during many successive generations . May not ...
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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