 A second great fact which strikes us in our general review is, that barriers of any kind, or obstacles to free migration, are related in a close and important manner to the differences between the productions of various regions.  The Scientific Evidences of Organic Evolution - Стр. 49авторы: George John Romanes - 1882 - Страниц: 88Полный просмотр - Подробнее о книге
 | Charles Darwin - 1861 - Страниц: 470
...to the inhabitants of the sea. A second great fact which strikes us in our general review is, that barriers of any kind, or obstacles to free migration,...various regions. We see this in the great difference of nearly all the terrestrial productions of the New and Old Worlds, excepting in the northern parts,... | |
 | Charles Darwin - 1864 - Страниц: 472
...to the inhabitants of the sea. A second great fact which strikes us in our general review is, that barriers of any kind, or obstacles to free migration,...various regions. We see this in the great difference of nearly all the terrestrial productions of the New and Old Worlds, excepting in the northern parts,... | |
 | 1866 - Страниц: 658
...of various regions can be accounted for by their climatal and other physical conditions,"* but thai barriers of any kind, or obstacles to free migration...differences between the productions of various regions. t He exemplifies this law by showing that whilst there is a very slow and gradual variation of species... | |
 | 1866 - Страниц: 736
...regions can be accounted for l>y. their climatal and other physical conditions,"* but that harriers of any kind, or obstacles to free migration are related...differences between the productions of various regions.! He exemplifies this law by showing that whilst there is a very slow and gradual variation of species... | |
 | 1909 - Страниц: 838
...habitants of the various regions can be wholly accounted for by climatal or other physical conditions," (2) "barriers of any kind or obstacles to free migration,...differences between the productions of various regions," (3) "the affinity of the productions of the same continent, or of the same area, though the species... | |
 | Charles Darwin - 1875 - Страниц: 504
...the inhabitants of the sea. A second great fact which strikes us in our general review is, ^-" that barriers of any kind, or obstacles to free migration,...close and important manner to the differences between tho productions of various regions. We see this in the great difference in nearly all tho terrestrial... | |
 | 1879 - Страниц: 614
...to be the ca-e, as abun^ dant evidence proves. For, to quote from Mr. Darwin, "barriers of anykind, or obstacles to free migration, are related in a close...manner to the differences between the productions of varions regions. We see this in the great difference in nearly all the terrestrial production» of... | |
 | 1882 - Страниц: 876
...wholly accounted for by climatal and other physical conditions." He secondly notes the fact, " that barriers of any kind, or obstacles to free migration,...differences between the productions of various regions ;" and a third fact noted by Darwin is " the affinity of the productions of the same continent or of... | |
 | Andrew Wilson - 1887 - Страниц: 382
...wholly accounted for by climatal and other physical conditions." He secondly notes the fact, " that barriers of any kind, or obstacles to free migration,...differences between the productions of various regions ; " and a third fact noted by Darwin is " the affinity of the productions of the same continent or... | |
 | Charles Darwin - 1909 - Страниц: 586
...to the inhabitants of the sea. A second great fact which strikes us in our general review is, that barriers of any kind, or obstacles to free migration,...productions of various regions. We see this in the great differences in nearly all the terrestrial productions of the New and Old Worlds, excepting in the northern... | |
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