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 6
... belonging to what are called the same genera are lineal descendants of some other and generally extinct species , in the same manner as the acknowledged varieties of any one species are the de- scendants of that species . Furthermore ...
... belonging to what are called the same genera are lineal descendants of some other and generally extinct species , in the same manner as the acknowledged varieties of any one species are the de- scendants of that species . Furthermore ...
Page 20
... belonging to equally diverse classes and countries , were taken from a state of nature , and could be made to breed for an equal number of generations under domestication , they would on an average vary as largely as the parent species ...
... belonging to equally diverse classes and countries , were taken from a state of nature , and could be made to breed for an equal number of generations under domestication , they would on an average vary as largely as the parent species ...
Page 21
... , that all the races belong to the same species . Having kept nearly all the English breeds of the fowl alive , having bred and crossed them , and examined their skeletons , CHAP . I. ] CHARACTER OF DOMESTIC VARIETIES . 21.
... , that all the races belong to the same species . Having kept nearly all the English breeds of the fowl alive , having bred and crossed them , and examined their skeletons , CHAP . I. ] CHARACTER OF DOMESTIC VARIETIES . 21.
Page 28
... belonging to two or more distinct breeds are crossed , none of which are blue or have any of the above - specified marks , the mongrel offspring are very apt suddenly to acquire these characters . To give one instance out of several ...
... belonging to two or more distinct breeds are crossed , none of which are blue or have any of the above - specified marks , the mongrel offspring are very apt suddenly to acquire these characters . To give one instance out of several ...
Page 46
... belong to poor people , and are mostly in small lots , they never can be improved . " On the other hand , nurserymen , from keeping large stocks of the same plant , are generally far more successful than amateurs in raising new and ...
... belong to poor people , and are mostly in small lots , they never can be improved . " On the other hand , nurserymen , from keeping large stocks of the same plant , are generally far more successful than amateurs in raising new and ...
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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