The Origin of Species by Means of Natural Selection,: Or the Preservation of Favoured Races in the Struggle for LifeJohn Murray, Albemarle Street., 1891 - 432 páginas |
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Página xiv
... instance , cattle got their horns , and not for what they are used . It is rather a singular instance of the manner in which similar views arise at about the same time , that Goethe in Germany , Dr. Darwin in England , and Geoffroy ...
... instance , cattle got their horns , and not for what they are used . It is rather a singular instance of the manner in which similar views arise at about the same time , that Goethe in Germany , Dr. Darwin in England , and Geoffroy ...
Página xvii
... instance , a woodpecker has become adapted to its peculiar habits of life . The work , from its powerful and brilliant style , though displaying in the earlier editions little accurate knowledge and a great want of scientific caution ...
... instance , a woodpecker has become adapted to its peculiar habits of life . The work , from its powerful and brilliant style , though displaying in the earlier editions little accurate knowledge and a great want of scientific caution ...
Página 7
... instances ) , yet having their reproductive system so seriously affected by unperceived causes as to fail to act , we ... instance , rabbits and ferrets kept in hutches ) , showing that their reproductive organs are not easily affected ...
... instances ) , yet having their reproductive system so seriously affected by unperceived causes as to fail to act , we ... instance , rabbits and ferrets kept in hutches ) , showing that their reproductive organs are not easily affected ...
Página 8
... instance , buds on peach - trees producing nectarines , and buds on common roses producing moss - roses - we clearly see that the nature of the condition is of subordinate importance in comparison with the nature of the organism in ...
... instance , buds on peach - trees producing nectarines , and buds on common roses producing moss - roses - we clearly see that the nature of the condition is of subordinate importance in comparison with the nature of the organism in ...
Página 12
... instance , it could be shown that the greyhound , bloodhound , terrier , spaniel , and bull - dog , which we all know propagate their kind truly , were the offspring of any single species , then such facts would have great weight in ...
... instance , it could be shown that the greyhound , bloodhound , terrier , spaniel , and bull - dog , which we all know propagate their kind truly , were the offspring of any single species , then such facts would have great weight in ...
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Términos y frases comunes
accumulated adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species domestic animals doubt effects eggs embryo existing extinct extremely facts favourable female fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids 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 occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed tend theory tion variability variations varieties vary whilst whole wings young