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 vi
... terrestrial Mam- mals - On the relation of the inhabitants of islands to those of the nearest mainland - On colonisation from the nearest source with subsequent modification — Summary of the last and present chapter • . 171 CHAPTER XIV ...
... terrestrial Mam- mals - On the relation of the inhabitants of islands to those of the nearest mainland - On colonisation from the nearest source with subsequent modification — Summary of the last and present chapter • . 171 CHAPTER XIV ...
Página 59
... terrestrial productions which lived during the Secondary and Paleozoic periods , it is superfluous to state that our evidence is fragmentary in an extreme degree . For instance , until recently not a land - shell was known belonging to ...
... terrestrial productions which lived during the Secondary and Paleozoic periods , it is superfluous to state that our evidence is fragmentary in an extreme degree . For instance , until recently not a land - shell was known belonging to ...
Página 91
... terrestrial and in more highly organised . productions compared with marine and lower produc- tions , by the more complex relations of the higher beings to their organic and inorganic conditions of life , as explained in a former ...
... terrestrial and in more highly organised . productions compared with marine and lower produc- tions , by the more complex relations of the higher beings to their organic and inorganic conditions of life , as explained in a former ...
Página 104
... terrestrial inhabitants of distinct conti- nents than with the marine inhabitants of the continu- ous sea . We might therefore expect to find , as we do find , a less strict degree of parallelism in the succesion of the productions of ...
... terrestrial inhabitants of distinct conti- nents than with the marine inhabitants of the continu- ous sea . We might therefore expect to find , as we do find , a less strict degree of parallelism in the succesion of the productions of ...
Página 108
... terrestrial reptiles . Turning to the Ivertebrata , Barrande asserts , a higher authority could not be named , that he is every day taught that , although paleozoic animals can certainly be classed under existing groups , yet that at ...
... terrestrial reptiles . Turning to the Ivertebrata , Barrande asserts , a higher authority could not be named , that he is every day taught that , although paleozoic animals can certainly be classed under existing groups , yet that at ...
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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