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 13
... called correlated variation . Important changes in the embryo or larva will probably entail changes in the mature animal . In monstrosities , the correlations between quite distinct parts are very curious ; and many instances are given ...
... called correlated variation . Important changes in the embryo or larva will probably entail changes in the mature animal . In monstrosities , the correlations between quite distinct parts are very curious ; and many instances are given ...
Page 21
... called species . This conclusion , as well as that of the specific distinction between the humped and common cattle , may , indeed , be looked upon as established by the admirable researches of Professor Rütimeyer . With respect to ...
... called species . This conclusion , as well as that of the specific distinction between the humped and common cattle , may , indeed , be looked upon as established by the admirable researches of Professor Rütimeyer . With respect to ...
Page 39
... called Unconscious , and which results from every one trying to possess and breed from the best individual animals , is more important . Thus , a man who intends keeping pointers . naturally tries to get as good dogs as he can , and ...
... called Unconscious , and which results from every one trying to possess and breed from the best individual animals , is more important . Thus , a man who intends keeping pointers . naturally tries to get as good dogs as he can , and ...
Page 45
... called it , of un- conscious selection will always tend , -perhaps more at one period than at another , as the breed rises or falls in fashion , perhaps more in one district than in añ- other , according to the state of civilisation of ...
... called it , of un- conscious selection will always tend , -perhaps more at one period than at another , as the breed rises or falls in fashion , perhaps more in one district than in añ- other , according to the state of civilisation of ...
Page 51
... called monstrosities ; but they graduate into varieties . By a monstrosity I presume is meant some considerable deviation of structure , generally injurious , or not useful to the species . Some authors use the term " variation " in a ...
... called monstrosities ; but they graduate into varieties . By a monstrosity I presume is meant some considerable deviation of structure , generally injurious , or not useful to the species . Some authors use the term " variation " in a ...
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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 lamellæ larvæ 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