 | Charles Darwin - 1861 - 470 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... | |
 | 1861 - 824 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...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,... | |
 | Charles Darwin - 1864 - 472 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... | |
 | John Watts - 1865 - 206 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... | |
 | Charles Darwin - 1866 - 668 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... | |
 | 1868 - 884 páginas
...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... | |
 | 1868 - 884 páginas
...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... | |
 | Chambers W. and R., ltd - 1874 - 876 páginas
...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... | |
 | Charles Darwin - 1875 - 504 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... | |
 | 1878 - 880 páginas
...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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... 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... 
