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Libros Libros 1 - 10 de 62 sobre ... the case of an island, or of a country partly surrounded by barriers, into which...
" ... the case of an island, or of a country partly surrounded by barriers, into which new and better adapted forms could not freely enter, we should then have places in the economy of nature which would assuredly be better filled up, if some of the original... "
The Geologist: A Popular Monthly Magazine of Geology - Página 458
1860
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On the Origin of Species by Means of Natural Selection; Or, The Preservation ...

Charles Darwin - 1861 - 440 páginas
...assuredly be better filled up, if some of the original inhabitants were in some manner modified ; for, had the area been open to immigration, these same...and which in any way favoured the individuals of any of the species, by better adapting them to their altered conditions, would tend to be preserved ; and...
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The Theological and Literary Journal, Volumen13

1861
...assuredly be better filled up if some of the original inhabitants were in some manner modified, for had the area been open to immigration, these same...course of ages, chanced to arise, and which in any way favored the individuals of any of the species, by better adapting them to their altered condition,...
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On the Origin of Species by Means of Natural Selection: Or, The Preservation ...

1864 - 440 páginas
...assuredly be better filled up, . if some of the original inhabitants were in some manner modified ; for, had the area been open to immigration, these same...and which in any way favoured the individuals of any of the species, by better adapting them to their altered conditions, would tend to be preserved ; and...
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Half-hours with Freethinkers

John Watts - 1865
...assuredly be better filled up, if some of the original inhabitants were in some manner modified ; for, had the area been open to immigration, these same...and which in any way favoured the individuals of any of the species, by better adapting them to their altered conditions, would tend to be preserved ; and...
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On the Origin of Species by Means of Natural Selection: Or The Preservation ...

Charles Darwin - 1866 - 593 páginas
...assuredly be better filled up, if some of the original inhabitants were in some manner modified ; for, had the area been open to immigration, these same...would have been seized on by intruders. In such case, ever}- slight modification, which in the course ofages chanced to arise, and which in any way favoured...
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Chambers's Encyclopaedia: A Dictionary of Universal Knowledge for ..., Volumen9

1868
...surrounded by barriers sufficient to prevent the ready immigration of species. ' In such cases,' he says, 'every slight modification, which in the course of...and which in any way favoured the individuals of any of the species, by better adapting them to their altered conditions, would tend to be preserved ; and...
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Chambers's Encyclopædia: A Dictionary of Universal Knowledge, Volumen9

1868
...surrounded by barriers sufficient to prevent the ready immigration of species. ' In such cases,' be says, ' every slight modification, which in the course of...which in any •way favoured the individuals of any of the species, by better adapting them to their altered conditions, would tend to be preserved ; and...
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Chambers's encyclopædia, Volumen9

1874
...the ready immigration of species. ' In such cases,' he says, 'every slight modification, which in tho course of ages chanced to arise, and which in any way favoured the individuals of any of the species, by better adapting them to their altered conditions, would tend to be preserved ; and...
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On the Origin of Species by Means of Natural Selection, Or The Preservation ...

1875 - 458 páginas
...assuredly be better filled up, if some of the original inhabitants were in some manner modified ; for, had the area been open to immigration, these same...places would have been seized on by intruders. In such cases, slight modifications, which in any way favoured the individuals of any species, by better adapting...
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Chambers's Encyclopædia: A Dictionary of Universal Knowledge for the People ...

1878
...ready immigration of species. ' In such cases, he says, 'every slight modification, which in the courge of ages chanced to arise, and which in any way favoured the individuals of any of the species by better adapting them to their altered conditions would tend to be preserved ; and...
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