The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeCollier Books, 1962 - 512 páginas |
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Página 38
... believe in the multiple origin of our domestic animals is , that we find in the most ancient times , on the monuments of Egypt , and in the lake- habitations of Switzerland , much diversity in the breeds ; and that some of these ancient ...
... believe in the multiple origin of our domestic animals is , that we find in the most ancient times , on the monuments of Egypt , and in the lake- habitations of Switzerland , much diversity in the breeds ; and that some of these ancient ...
Página 131
... believe that the brain must be bathed by warm blood to be highly active , and this requires aërial respiration ; so that warm - blooded mammals when inhabiting the water lie under a disadvantage in having to come continually to the ...
... believe that the brain must be bathed by warm blood to be highly active , and this requires aërial respiration ; so that warm - blooded mammals when inhabiting the water lie under a disadvantage in having to come continually to the ...
Página 196
... believe that many structures have been created for the sake of beauty , to delight man or the Creator ( but this ... 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 many structures have been created for the sake of beauty , to delight man or the Creator ( but this ... believe that the webbed feet of the upland goose or of the frigate - bird are of special use to these birds ; we cannot ...
Contenido
An Historical Sketch | 15 |
Introduction | 25 |
Variation Under Nature | 58 |
Derechos de autor | |
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The Origin of Species by Means of Natural Selection: Or, The ..., Volumen2 Charles Darwin Vista de fragmentos - 1972 |
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1963 |
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 common continent crossed crustaceans degree developed difficulty distinct species domestic doubt eggs embryo existing extinct extremely facts favourable fertilised 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 Marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs Origin of Species parent peculiar perfect pigeons pistil 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 tend theory tion variability variations varieties vary whilst whole wings young