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 ix
... various subjects , according as the evidence has become somewhat stronger or weaker . The more important corrections and some additions in the present volume are tabulated on the following page , for the convenience of those interested ...
... various subjects , according as the evidence has become somewhat stronger or weaker . The more important corrections and some additions in the present volume are tabulated on the following page , for the convenience of those interested ...
Page 10
... various organs . With respect to what I have called the indirect ac- tion of changed conditions , namely , through the repro- ductive system being affected , we may infer that vari- ability is thus induced , partly from the fact of this ...
... various organs . With respect to what I have called the indirect ac- tion of changed conditions , namely , through the repro- ductive system being affected , we may infer that vari- ability is thus induced , partly from the fact of this ...
Page 14
... various , unknown , or but dimly understood laws of variation are infinitely complex and diversified . It is well worth while carefully to study the several treatises on some of our old cultivated plants , as on the hyacinth , potato ...
... various , unknown , or but dimly understood laws of variation are infinitely complex and diversified . It is well worth while carefully to study the several treatises on some of our old cultivated plants , as on the hyacinth , potato ...
Page 17
... various breeds , and esculent vegetables , for an unlimited number of generations , would be opposed to all experience . Character of Domestic Varieties ; difficulty of dis- tinguishing between CHAP . I. ] VARIATION UNDER DOMESTICATION .
... various breeds , and esculent vegetables , for an unlimited number of generations , would be opposed to all experience . Character of Domestic Varieties ; difficulty of dis- tinguishing between CHAP . I. ] VARIATION UNDER DOMESTICATION .
Page 30
... of the blue colour and various black marks in all the breeds , both when kept pure and when crossed ; -and lastly , the mongrel offspring being perfectly fertile ; -from these several reasons 30 [ CHAP . I. DOMESTIC PIGEONS .
... of the blue colour and various black marks in all the breeds , both when kept pure and when crossed ; -and lastly , the mongrel offspring being perfectly fertile ; -from these several reasons 30 [ CHAP . I. DOMESTIC PIGEONS .
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Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellę larvę less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young