| Charles Darwin - 1861 - Страниц: 470
...increasing in numbers, and thus of supplanting the less distinct varieties ; and varieties, when rendered very distinct from each other, take the rank of species....contest between individual and individual must be severe, we always find great diversity in its inhabitants. For instance, I found that a piece of turf,... | |
| Charles Darwin - 1864 - Страниц: 472
...varieties ; and varieties, when rendered very distinct from each other, take the rank of speei«B. / The truth of the principle, that the greatest amount...contest between individual and individual must be severe, we always find great diversity in its inhabitants. For instance, I found that a piece of turf,... | |
| Charles Darwin - 1866 - Страниц: 668
...increasing in numbers, and thus of supplanting the less distinct varieties ; and varieties, when rendered very distinct from each other, take the rank of species....contest between individual and individual must be severe, we always find great diversity in its inhabitants. For instance, I found that a piece of turf,... | |
| Charles Darwin - 1870 - Страниц: 468
...varieties ; and varieties, when rendered very distinct from each other, take the rank of species. The tmth of the principle, that the greatest amount of life...contest between individual and individual must be severe, we always find great diversity in its inhabitants. For instance, Ifound that a piece of turf,... | |
| Charles Darwin - 1873 - Страниц: 492
...numbers, and thus of supplanting the less distinct varieties ; and varieties, when rendered" verycustinct from each other, take the rank of species. * The truth...supported by great diversification of structure, is seen und,erTnany natural circumstances. In an extremely~small area, especially if freely open to immigration,... | |
| Charles Darwin - 1875 - Страниц: 504
...increasing in numbers, and thus of supplanting the less distinct varieties ; and varieties, when rendered very distinct from each other, take the rank of species....the principle that the greatest amount of life can bo supported by great diversification of structure, is seen under many natural circumstances. In an... | |
| Asa Gray - 1878 - Страниц: 416
...number of different genera of plants and animals which are generally found to inhabit any limited area. "The truth of the principle that the greatest amount...contest between individual and individual must be severe, we always find great diversity in its inhabitants. For instance, I found that a piece of turf,... | |
| Asa Gray - 1877 - Страниц: 418
...number of different genera of plants and animals which are generally found to inhabit any limited area. "The truth of the principle that the greatest amount of life can he supported hy great diversification of structure is seen under many natural circumstances. In an... | |
| Charles Darwin - 1882 - Страниц: 494
...increasing in numbers, and thus of supplanting the less distinct varieties; and varieties, when rendered very distinct from each other, take the rank of species....open to immigration, and where the contest between indivilual and individual must be very severe, we always find great diversity in its inhabitants. For... | |
| Charles Darwin - 1882 - Страниц: 492
...increasing in numbers, and thus of supplanting the less distinct varieties ; and varieties, when rendered very distinct from each other, take the rank of species....the principle that the greatest amount of life can bo supported by great diversification of structure, is seen under many natural circumstances. In an... | |
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