On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 |
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Página 49
... intermediate varieties , which have formerly existed , be truly enormous . Why then is not every geological formation and every stra- tum full of such intermediate links ? Geology assured- ly does not reveal any such finely - graduated ...
... intermediate varieties , which have formerly existed , be truly enormous . Why then is not every geological formation and every stra- tum full of such intermediate links ? Geology assured- ly does not reveal any such finely - graduated ...
Página 50
... intermediate between them ever existed , but between each and an unknown common parent . The common parent will have had in its whole organisation much general re- semblance to the tapir and to the horse ; but in some points of ...
... intermediate between them ever existed , but between each and an unknown common parent . The common parent will have had in its whole organisation much general re- semblance to the tapir and to the horse ; but in some points of ...
Página 51
... intermediate and transitional links , between all living and extinct spe- cies , must have been inconceivably great . But as- suredly , if this theory be true , such have lived upon the earth . On the Lapse of Time , as inferred from ...
... intermediate and transitional links , between all living and extinct spe- cies , must have been inconceivably great . But as- suredly , if this theory be true , such have lived upon the earth . On the Lapse of Time , as inferred from ...
Página 65
... formed ; and it is during these very periods of subsidence , that the deposits which are richest in fossils have been accumulated . On the Absence of Numerous Intermediate Varieties in any Single CHAP . X. ] PALEONTOLOGICAL COLLECTIONS .
... formed ; and it is during these very periods of subsidence , that the deposits which are richest in fossils have been accumulated . On the Absence of Numerous Intermediate Varieties in any Single CHAP . X. ] PALEONTOLOGICAL COLLECTIONS .
Página 66
Charles Darwin. On the Absence of Numerous Intermediate Varieties in any Single Formation . From these several considerations , it cannot be doubted that the geological record , viewed as a whole , is ... INTERMEDIATE VARIETIES [ CHAP . X.
Charles Darwin. On the Absence of Numerous Intermediate Varieties in any Single Formation . From these several considerations , it cannot be doubted that the geological record , viewed as a whole , is ... INTERMEDIATE VARIETIES [ CHAP . X.
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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