The Origin of Species by Means of Natural Selection,: Or the Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 - 432 páginas |
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Página 87
... South America , of naked metamorphic rocks , which must have been heated under great pressure , have always seemed to me to require some special explanation ; and we may per- haps believe that we see in these large areas , the many ...
... South America , of naked metamorphic rocks , which must have been heated under great pressure , have always seemed to me to require some special explanation ; and we may per- haps believe that we see in these large areas , the many ...
Página 96
... South America , has run wild over the whole country and has increased in numbers at an unparal- leled rate , I asked myself what could so recently have exterminated the former horse under conditions of life apparently so favourable ...
... South America , has run wild over the whole country and has increased in numbers at an unparal- leled rate , I asked myself what could so recently have exterminated the former horse under conditions of life apparently so favourable ...
Página 97
... S. America . We see in many cases in the more recent tertiary for- mations , that rarity precedes extinction ; and we know that this has been the progress of events with those animals which have been exterminated , either locally or ...
... S. America . We see in many cases in the more recent tertiary for- mations , that rarity precedes extinction ; and we know that this has been the progress of events with those animals which have been exterminated , either locally or ...
Página 100
... America , in equatorial South America , in Tierra del Fuego , at the Cape of Good 100 [ CHAP . XI . FORMS OF LIFE CHANGING.
... America , in equatorial South America , in Tierra del Fuego , at the Cape of Good 100 [ CHAP . XI . FORMS OF LIFE CHANGING.
Página 102
... South America or in Australia , the most skilful natu- ralist would hardly be able to say whether the present or the pleistocene inhabitants of Europe resembled most closely those of the southern hemisphere . So , again , several highly ...
... South America or in Australia , the most skilful natu- ralist would hardly be able to say whether the present or the pleistocene inhabitants of Europe resembled most closely those of the southern hemisphere . So , again , several highly ...
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Términos y frases comunes
admit affinity allied species ancient animals appear Archipelago arctic areas become believe birds Cambrian changes characters cies classification climate closely allied common progenitor continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo eral 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 sediment seeds Silurian South America stage stamens sterility structure successive suppose terrestrial tertiary theory tion variations varieties whilst widely different wings