On the Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life1859 |
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Page 110
... second chapter , showing that it is the common species which afford the greatest number of recorded varieties , or incipient species . Hence , rare species will be less quickly modified or improved within any given period , and they ...
... second chapter , showing that it is the common species which afford the greatest number of recorded varieties , or incipient species . Hence , rare species will be less quickly modified or improved within any given period , and they ...
Page 116
... nature , and as is represented in the diagram by the letters standing at unequal distances . I have said a large genus , because we have seen in the second chapter , 14 614 . f14 XIV XIII XII a 10 a 116 CHAP . IV . NATURAL SELECTION .
... nature , and as is represented in the diagram by the letters standing at unequal distances . I have said a large genus , because we have seen in the second chapter , 14 614 . f14 XIV XIII XII a 10 a 116 CHAP . IV . NATURAL SELECTION .
Page 120
... second species ( I ) has produced , by analogous steps , after ten thousand generations , either two well- marked varieties ( w10 and 210 ) or two species , according to the amount of change supposed to be represented be- tween the ...
... second species ( I ) has produced , by analogous steps , after ten thousand generations , either two well- marked varieties ( w10 and 210 ) or two species , according to the amount of change supposed to be represented be- tween the ...
Page 165
... second case ) from the ass and the hemionus ; and this hybrid , though the ass seldom has stripes on its legs and the hemionus has none and has not even a shoulder - stripe , nevertheless had all four legs barred , and had three short ...
... second case ) from the ass and the hemionus ; and this hybrid , though the ass seldom has stripes on its legs and the hemionus has none and has not even a shoulder - stripe , nevertheless had all four legs barred , and had three short ...
Page 168
... second Chapter that the same principle applies to the whole individual ; for in a district where many species of any genus are found that is , where there has been much former variation and differentiation , or where the manufactory of ...
... second Chapter that the same principle applies to the whole individual ; for in a district where many species of any genus are found that is , where there has been much former variation and differentiation , or where the manufactory of ...
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Common terms and phrases
adapted affinities allied species America amount analogous ancient animals become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable Fcap fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites History hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring perfect pigeons plants pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble Second Edition seeds sexual selection Silurian slight South America sterility structure struggle successive suppose theory Third Edition tion variability variation varieties vary Vols whole widely Woodcuts