The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for LifeP.F. Collier & son, 1902 - 356페이지 |
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11 페이지
... natural selection shadowed forth , but how little Aristotle fully comprehended the principle is shown by his remarks on the formation of the teeth . rear c COOL CS Ch a Coun times has treated ( 11 ) HISTORICAL SKETCH ·
... natural selection shadowed forth , but how little Aristotle fully comprehended the principle is shown by his remarks on the formation of the teeth . rear c COOL CS Ch a Coun times has treated ( 11 ) HISTORICAL SKETCH ·
14 페이지
... formation of varieties of man- kind , fitted for the country which they inhabit . Of the accidental varieties of man , which would occur among the first few and scattered inhabitants of the middle re- gions of Africa , some one would be ...
... formation of varieties of man- kind , fitted for the country which they inhabit . Of the accidental varieties of man , which would occur among the first few and scattered inhabitants of the middle re- gions of Africa , some one would be ...
19 페이지
... formation of a new species ; but this it appears ( Ibid . vol . iii . page 798 ) is inaccurate and without evidence . I also gave some extracts from a corrondence between Professor Owen and the editor of the " London Review , " from ...
... formation of a new species ; but this it appears ( Ibid . vol . iii . page 798 ) is inaccurate and without evidence . I also gave some extracts from a corrondence between Professor Owen and the editor of the " London Review , " from ...
33 페이지
... formation of our domestic races . We see indefinite variability in the endless slight peculiarities which distinguish the individuals of the same species , and which cannot be accounted for by inheritance from either parent or from some ...
... formation of our domestic races . We see indefinite variability in the endless slight peculiarities which distinguish the individuals of the same species , and which cannot be accounted for by inheritance from either parent or from some ...
44 페이지
... formations of many parts of the world , all geologists believe that bar- barian man existed at an enormously remote period ; and we know that at the present day there is hardly a tribe so barbarous as not to have domesticated at least ...
... formations of many parts of the world , all geologists believe that bar- barian man existed at an enormously remote period ; and we know that at the present day there is hardly a tribe so barbarous as not to have domesticated at least ...
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adapted admit affinities allied species America analogous ancient animals appear beak become bees believe belonging birds breeds cause cells characters climate closely allied color common continent crossed crustaceans degree developed difficulty distinct species domestic doubt eggs embryo existing extinct extremely facts favorable fertility flowers formation forms fossil Fritz Müller genera genus geological 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 male mammals manner marsupial migration modification modified descendants natural selection naturalists nearly nest offspring organs ORIGIN OF SPECIES paleozoic parent peculiar perfect pigeon pistil plants pollen present principle probably produced progenitor quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder theory tion trees variability variations varieties vary whole wings young