On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 6
... present welfare , and , as I believe , the future success and modification of every inhabitant of this world . Still less do we know of the mutual relations of the innumerable inhabitants of the world during the many past geological ...
... present welfare , and , as I believe , the future success and modification of every inhabitant of this world . Still less do we know of the mutual relations of the innumerable inhabitants of the world during the many past geological ...
Page 16
... deter- mining what characters are of generic value ; all such valuations being at present empirical . Moreover , on the view of the origin of genera which I shall presently give , we have no right to expect often to 16 CHAP . I. VARIATION.
... deter- mining what characters are of generic value ; all such valuations being at present empirical . Moreover , on the view of the origin of genera which I shall presently give , we have no right to expect often to 16 CHAP . I. VARIATION.
Page 18
... present day there is hardly a tribe so barbarous as not to have domesticated at least the dog . The origin of most of our domestic animals will pro- bably for ever remain vague . But I may here state , that looking to the domestic dogs ...
... present day there is hardly a tribe so barbarous as not to have domesticated at least the dog . The origin of most of our domestic animals will pro- bably for ever remain vague . But I may here state , that looking to the domestic dogs ...
Page 20
... present any desired character ; but that a race could be obtained nearly intermediate between two extremely different races or species , I can hardly believe . Sir J. Sebright expressly experimented for this object , and failed . The ...
... present any desired character ; but that a race could be obtained nearly intermediate between two extremely different races or species , I can hardly believe . Sir J. Sebright expressly experimented for this object , and failed . The ...
Page 23
... the rock - pigeon , they must have descended from at least seven or eight aboriginal stocks ; for it is impossible to make the present domestic breeds by the crossing of any lesser number : how CHAP . I. 23 DOMESTIC PIGEONS .
... the rock - pigeon , they must have descended from at least seven or eight aboriginal stocks ; for it is impossible to make the present domestic breeds by the crossing of any lesser number : how CHAP . I. 23 DOMESTIC PIGEONS .
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Common terms and phrases
accumulated adapted affinities allied species America amount analogous ancient animals appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living male mammals manner Marsupials migration modification modified descendants mongrels natural selection naturalists nearly nest occasionally offspring organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor racter ranked reciprocal crosses remarked resemble rudimentary organs seeds Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely