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 18
... ranked by some competent judges as the descendants of aboriginally distinct species , and by other competent judges as mere varieties . If any well marked distinction existed between a domestic race and a species , this source of doubt ...
... ranked by some competent judges as the descendants of aboriginally distinct species , and by other competent judges as mere varieties . If any well marked distinction existed between a domestic race and a species , this source of doubt ...
Page 26
... ranked by him as well - defined species . Moreover , I do not believe that any ornithologist would in this case place the English carrier , the short - faced tumbler , the runt , the barb , pouter , and fantail in the same genus ; more ...
... ranked by him as well - defined species . Moreover , I do not believe that any ornithologist would in this case place the English carrier , the short - faced tumbler , the runt , the barb , pouter , and fantail in the same genus ; more ...
Page 41
... to be ranked at their first appearance as distinct varieties , and whether or not two or more species or races have become blended together by crossing , may plainly be recognised CHAP . I. ] 41 UNCONSCIOUS SELECTION .
... to be ranked at their first appearance as distinct varieties , and whether or not two or more species or races have become blended together by crossing , may plainly be recognised CHAP . I. ] 41 UNCONSCIOUS SELECTION .
Page 54
... rank those parts as important ( as some few naturalists have honestly confessed ) which do not vary ; and , under this point of view , no instance will ever be found of an important part varying ; but under any other point of view many ...
... rank those parts as important ( as some few naturalists have honestly confessed ) which do not vary ; and , under this point of view , no instance will ever be found of an important part varying ; but under any other point of view many ...
Page 56
... rank them as distinct species , are in several respects the most important for us . We have every reason to believe that many of these doubtful and closely allied forms have permanently retained their characters for a long time ; for as ...
... rank them as distinct species , are in several respects the most important for us . We have every reason to believe that many of these doubtful and closely allied forms have permanently retained their characters for a long time ; for as ...
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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