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 57
... probably with the length of hair . With respect to fleetness , which depends on many bodily characters , Eclipse was far fleeter , and a dray- horse is incomparably stronger than any two natural species belonging to the same genus . So ...
... probably with the length of hair . With respect to fleetness , which depends on many bodily characters , Eclipse was far fleeter , and a dray- horse is incomparably stronger than any two natural species belonging to the same genus . So ...
Página 131
... probably interfere little with each other . Although organisation , on the whole , may have advanced and be still advancing throughout the world , yet the scale will always present many degrees of perfection ; for the high advancement ...
... probably interfere little with each other . Although organisation , on the whole , may have advanced and be still advancing throughout the world , yet the scale will always present many degrees of perfection ; for the high advancement ...
Página 331
... probably differed greatly from any known animal . Some of the most ancient animals , as the Nautilus , Lingula , & c . , do not differ much from living species ; and it cannot on our theory be sup- posed , that these old species were ...
... probably differed greatly from any known animal . Some of the most ancient animals , as the Nautilus , Lingula , & c . , do not differ much from living species ; and it cannot on our theory be sup- posed , that these old species were ...
Contenido
An Historical Sketch | 15 |
Introduction | 25 |
Variation Under Nature | 58 |
Derechos de autor | |
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Otras ediciones - Ver todas
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