The Origin of Species by Means of Natural Selection Or, The Preservation of Favored Races in the Struggle for Life |
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Page v
... closely , but unequally , related to each other , und in having restricted ranges 33-47 .. CHAPTER III . STRUGGLE FOR EXISTENCE . - - Its bearing on natural selection — The term used in a wide sense - Geome- trical ratio of increase ...
... closely , but unequally , related to each other , und in having restricted ranges 33-47 .. CHAPTER III . STRUGGLE FOR EXISTENCE . - - Its bearing on natural selection — The term used in a wide sense - Geome- trical ratio of increase ...
Page 12
... closely allied species , we generally perceive in cach domestic race , as already remarked , less uniformity of character than in true species . Domestic races often have a somewhat monstrous character ; by which I mean , that ...
... closely allied species , we generally perceive in cach domestic race , as already remarked , less uniformity of character than in true species . Domestic races often have a somewhat monstrous character ; by which I mean , that ...
Page 13
... closely resemble , or are even identical with , those still exist- ing . But this only throws far backwards the history of civilisation , and shows that animals were domesticated at a much earlier period than has hitherto been supposed ...
... closely resemble , or are even identical with , those still exist- ing . But this only throws far backwards the history of civilisation , and shows that animals were domesticated at a much earlier period than has hitherto been supposed ...
Page 19
... closely related to each other . But to extend it so far as to suppose that species , aborigi- nally as distinct as carriers , tumblers , pouters , and fantails now are , should yield offspring perfectly fertile inter se , would be rash ...
... closely related to each other . But to extend it so far as to suppose that species , aborigi- nally as distinct as carriers , tumblers , pouters , and fantails now are , should yield offspring perfectly fertile inter se , would be rash ...
Page 23
... closely allied sub - breeds . And when a cross has been made , the closest selection is far more indispensable even than in ordinary cases . If selection consisted merely in sepa- rating some very distinct variety , and breeding from it ...
... closely allied sub - breeds . And when a cross has been made , the closest selection is far more indispensable even than in ordinary cases . If selection consisted merely in sepa- rating some very distinct variety , and breeding from it ...
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Common terms and phrases
adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formations formerly forms fossil Fritz Müller genera genus geological Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed theory tion variability variations varieties vary whilst whole wings young