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 191
... important ; whereas it cannot be disputed that the nature of the other species with which each has to compete , is at least as important , and generally a far more important element of success . Now if we look to the species which ...
... important ; whereas it cannot be disputed that the nature of the other species with which each has to compete , is at least as important , and generally a far more important element of success . Now if we look to the species which ...
Página 206
... importance ! So again in formerly discussing certain morphological characters which are not functionally important , we have seen that they are often of the highest service in classification . This depends on their constancy through ...
... importance ! So again in formerly discussing certain morphological characters which are not functionally important , we have seen that they are often of the highest service in classification . This depends on their constancy through ...
Página 209
... important that may be , has always failed ; for no part of the organisation is invariably constant . The importance of an aggregate of characters , even when none are important , alone explains the aphorism enunciated by Linnæus ...
... important that may be , has always failed ; for no part of the organisation is invariably constant . The importance of an aggregate of characters , even when none are important , alone explains the aphorism enunciated by Linnæus ...
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