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
... genera in each country vary more frequently than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally , related to each other , and in having restricted ...
... genera in each country vary more frequently than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally , related to each other , and in having restricted ...
Page 6
... 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 , I am convinced that Natural Selection ...
... 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 , I am convinced that Natural Selection ...
Page 23
... genera- tions , hardly two of them are alike , and then the diffi- culty of the task becomes manifest . Breeds of the Domestic Pigeon , their Differences and Origin . Believing that it is always best to study some special group , I have ...
... genera- tions , hardly two of them are alike , and then the diffi- culty of the task becomes manifest . Breeds of the Domestic Pigeon , their Differences and Origin . Believing that it is always best to study some special group , I have ...
Page 49
... genera . Isidore Geoffroy St. Hilaire has proved this in regard to size , and so it is with colour and probably with the length of hair . With respect to fleetness , which depends on many bodily characters , Eclipse was far fleeter ...
... genera . Isidore Geoffroy St. Hilaire has proved this in regard to size , and so it is with colour and probably with the length of hair . With respect to fleetness , which depends on many bodily characters , Eclipse was far fleeter ...
Page 51
... genera -- Many of the species of the larger genera resemble varieties in being very closely , but un- equally , related to each other , and in having restricted ranges . BEFORE applying the principles arrived at in the last chapter to ...
... genera -- Many of the species of the larger genera resemble varieties in being very closely , but un- equally , related to each other , and in having restricted ranges . BEFORE applying the principles arrived at in the last chapter to ...
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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