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 197
... effects of changes of climate and of the level of the land , which have certainly occurred within the recent period , and of other changes which have probably occurred , —if we remember how ignorant we are with respect to the many ...
... effects of changes of climate and of the level of the land , which have certainly occurred within the recent period , and of other changes which have probably occurred , —if we remember how ignorant we are with respect to the many ...
Página 262
... effect after the organ has once been rendered functionless . Some additional explanation is here requisite which I cannot give . If , for instance ... effects of disuse , rudimentary and would 262 [ CHAP . XIV . RUDIMENTARY , ATROPHIED ,
... effect after the organ has once been rendered functionless . Some additional explanation is here requisite which I cannot give . If , for instance ... effects of disuse , rudimentary and would 262 [ CHAP . XIV . RUDIMENTARY , ATROPHIED ,
Página 338
... effects of , under domestication , i . 12 . effects of , in a state of nature , i . 167 . Utility , how far important in the construction of each part , i . 249 . V. Valenciennes , on fresh - water fish , ii . 173 . Variability of ...
... effects of , under domestication , i . 12 . effects of , in a state of nature , i . 167 . Utility , how far important in the construction of each part , i . 249 . V. Valenciennes , on fresh - water fish , ii . 173 . Variability of ...
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