On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeEaston Press, 1976 - 470 páginas |
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Página 10
... believe that barbarian 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 the dog . The origin of most of our domestic animals ...
... believe that barbarian 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 the dog . The origin of most of our domestic animals ...
Página 164
... believe that the webbed feet of the upland goose or of the frigate - bird are of special use to these birds ; we cannot believe that the similar bones in the arm of the monkey , in the fore - leg of the horse , in the wing of the bat ...
... believe that the webbed feet of the upland goose or of the frigate - bird are of special use to these birds ; we cannot believe that the similar bones in the arm of the monkey , in the fore - leg of the horse , in the wing of the bat ...
Página 439
... believe that at innumerable periods in the earth's history certain elemental atoms have been commanded suddenly to flash into living tissues ? Do they believe that at each supposed act of creation one individual or many were produced ...
... believe that at innumerable periods in the earth's history certain elemental atoms have been commanded suddenly to flash into living tissues ? Do they believe that at each supposed act of creation one individual or many were produced ...
Contenido
VARIATION UNDER NATURE | 30 |
STRUGGLE FOR EXISTENCE | 45 |
NATURAL SELECTION | 59 |
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Términos y frases comunes
accumulated adapted admit affinities allied species America ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common progenitor continuous crossed crustaceans degree developed difficulty distinct species divergence doubt effects eggs embryo existing exterminated extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs Origin of Species parent peculiar perfect pigeons pistil plants pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds slight South America stamens sterility structure struggle successive supposed swimbladder theory variability variations varieties vary whilst whole wings young