 Given any species in any region, the nearest related species is not likely to be found in the same region nor in a remote region, but in a neighboring district separated from the first by a barrier of some sort, or at least by a belt of country, the breadth...  The American Naturalist - Page 2201907Affichage du livre entier - À propos de ce livre
 | American Association for the Advancement of Science - 1906 - 602 pages
...in their formation. It may be claimed that such conditions are •virtually universal;" and again: "Given any species in any region, the nearest related...separated from the first by a barrier of some sort." JB Steere, in a paper on the distribution of birds in the Philippines, published in 1894, formulated... | |
 | 1913 - 780 pages
...geographical isolation is an important factor in the formation of species, "Jordan's Law" ('05, p. 547) that "given any species in any region, the nearest related...separated from the first by a barrier of some sort, ' ' has been subject to much controversy and diversity of opinion. The conclusions of those biologists... | |
 | 1908 - 950 pages
...UNIVERSITY IN "Evolution and Animal Life," by Jordan and Kellogg (page 120), the following words are used: " Given any species, in any region, the nearest related species is not ko be found in the same region nor in a remote region, but in a neighboring district separated from... | |
 | John Michels (Journalist) - 1905 - 908 pages
...mentioned has a very broad application and may be raised to the dignity of a general law of distribution. Given any species in any region, the nearest related...separated from the first by a barrier of some sort. The nearest relative of the Tahoe trout (Salmo henshawi) is the cut-throat trout (Salmo clarki), its... | |
 | Arnold Edward Ortmann - 1897 - 356 pages
...Geographical Distribution of Nearly Related Species," American Naturalist, 41, 1007, pp. 207-240. ' " Given any species in any region, the nearest related...species is not likely to be found in the same region" (SCIENCE, 22, 1905, p. 547). ' Proceedings American Philosophical Society, 44, 1905, pp. 127, 128.... | |
 | University of California (1868-1952) - 1916 - 692 pages
...apparent that these facts, so far as they go, fulfill the requirements of Wagner and Jordan's law : "Given any species in any region, the nearest related...separated from the first by a barrier of some sort." It is now quite well established that on continuous land areas temperature is the most efficient of... | |
 | Harry Schelwald Swarth - 1913 - 656 pages
...apparent that these facts, so far as they go, fulfill the requirements of Wagner and Jordan's law : "Given any species in any region, the nearest related...separated from the first by a barrier of some sort." It is now quite well established that on continuous land areas •a temperature is the most efficient... | |
 | John Michels (Journalist) - 1905 - 904 pages
...mentioned has a very broad application and may be raised to the dignity of a general law of distribution. Given any species in any region, the nearest related...remote region, but in a neighboring district separated fi-om the first by a barrier of some sort. The nearest relative of the Tahoe trout (Salmo hrnnhaici)... | |
 | American Association for the Advancement of Science - 1906 - 600 pages
...factors in their formation. It may be claimed that such conditions are virtually universal;" and again: "Given any species in any region, the nearest related...separated from the first by a barrier of some sort." JB Steere, in a paper on the distribution of birds in the Philippines, published in 1894, formulated... | |
 | American Association for the Advancement of Science - 1906 - 608 pages
...factors in their formation. It may be claimed that such conditions are virtually universal'" and again: "Given any species in any region, the nearest related...separated from the first by a barrier of some sort." JB Steere, in a paper on the distribution of birds in the Philippines, published in 1894, formulated... | |
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