The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Volumen2AMS Press, 1972 |
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Página 151
... facts led Gmelin to conclude that the same species must have teen independently created at many distinct points ; and we might have remained in this same belief , had not Agassiz and others called vivid attention to the Glacial period ...
... facts led Gmelin to conclude that the same species must have teen independently created at many distinct points ; and we might have remained in this same belief , had not Agassiz and others called vivid attention to the Glacial period ...
Página 163
... facts are given in regard to the plants of that large island . Hence we see that certain plants growing on the more lofty mountains of the tropics in all parts of the world , and on the temperate plains of the north and south , are ...
... facts are given in regard to the plants of that large island . Hence we see that certain plants growing on the more lofty mountains of the tropics in all parts of the world , and on the temperate plains of the north and south , are ...
Página 287
... fact , if species had been independently created and varieties had been produced through secondary laws . If we admit that the geological record is imperfect to an extreme degree , then the facts , which the record does give , strongly ...
... fact , if species had been independently created and varieties had been produced through secondary laws . If we admit that the geological record is imperfect to an extreme degree , then the facts , which the record does give , strongly ...
Contenido
CONTENTS OF VOL | 1 |
CHAPTER X | 48 |
CHAPTER XII | 129 |
Derechos de autor | |
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Términos y frases comunes
accumulated adapted admit adult affinity allied species ancient animals appear Archipelago arctic areas become beds believe birds breeds Cambrian changes characters classification climate closely allied continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo Europe existing extinct fact faunas fertilised fertility flowers formations formerly forms fossil fresh-water Fritz Müller Gärtner genera genus geological period geological record Glacial period groups of species habits hybrids hybrids produced important individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammals manner marine Marsupials migration modified descendants mongrels mountains natural selection naturalists nearly occur oceanic islands offspring organisation parent parent-form peculiar perfect pistil plants pollen present probably produced quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs seeds Silurian slight South America species belonging stage stamens sterility structure successive suppose terrestrial tertiary tion variations varieties whilst widely different wings