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 142
... descendants of the common parent ( A ) , will generally go on increasing in number and diverging in character . In the diagram the process is represented up to the ten - thousandth generation , and under a condensed and simplified form ...
... descendants of the common parent ( A ) , will generally go on increasing in number and diverging in character . In the diagram the process is represented up to the ten - thousandth generation , and under a condensed and simplified form ...
Page 143
... descendants from any one species can be rendered , the more places they will be enabled to seize on , and the more their modified pro- geny will increase . In our diagram the line of succession . is broken at regular intervals by small ...
... descendants from any one species can be rendered , the more places they will be enabled to seize on , and the more their modified pro- geny will increase . In our diagram the line of succession . is broken at regular intervals by small ...
Page 144
... descendants will not be increased ; although the amount of divergent modifica- tion may have been augmented . This case would be represented in the diagram , if all the lines proceeding from ( A ) were removed , excepting that from a1 ...
... descendants will not be increased ; although the amount of divergent modifica- tion may have been augmented . This case would be represented in the diagram , if all the lines proceeding from ( A ) were removed , excepting that from a1 ...
Page 145
... descendants ; for these will have the best chance of seizing on new and widely dif- ferent places in the polity of nature : hence in the dia- gram I have chosen the extreme species ( A ) , and the nearly extreme species ( I ) , as those ...
... descendants ; for these will have the best chance of seizing on new and widely dif- ferent places in the polity of nature : hence in the dia- gram I have chosen the extreme species ( A ) , and the nearly extreme species ( I ) , as those ...
Page 146
... descendants , fourteen in num- ber at the fourteen - thousandth generation , will probably have inherited some of the same advantages : they have also been modified and improved in a diversified manner at each stage of descent , so as ...
... descendants , fourteen in num- ber at the fourteen - thousandth generation , will probably have inherited some of the same advantages : they have also been modified and improved in a diversified manner at each stage of descent , so as ...
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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