. The Andes of southern Peru; geographical reconnaissance along the seventy-third meridian. Yale Peruvian Expedition (1911); Physical geography; Geology. 280 THE ANDES OF SOUTHERN PERU in degrees. The former method has, heretofore, been employed. It is proposed that this method should be abolished and degrees substituted, on the following grounds : Let A and B, Fig. 190, rep- resent two mountain masses of unequal area and unequal eleva- tion. Let the opposite ends of the snowlines of both figures lie 1,000 feet apart as between the windward and leeward sides of a broad cordillera (A), or as be
. The Andes of southern Peru; geographical reconnaissance along the seventy-third meridian. Yale Peruvian Expedition (1911); Physical geography; Geology. 280 THE ANDES OF SOUTHERN PERU in degrees. The former method has, heretofore, been employed. It is proposed that this method should be abolished and degrees substituted, on the following grounds : Let A and B, Fig. 190, rep- resent two mountain masses of unequal area and unequal eleva- tion. Let the opposite ends of the snowlines of both figures lie 1,000 feet apart as between the windward and leeward sides of a broad cordillera (A), or as between the relatively sun- nier and relatively shadier slopes of individual moun- tains or narrow ranges in high latitudes or high alti- tudes (B). With increasing elevation there is increasing contrast between tempera- tures in sunshine and in shade, hence a greater de- gree of canting (B). Tend- ing toward a still greater degree of contrast is the ef- fect of the differences in the amounts of snowy precipita- tion, which are always more marked on an isolated and lofty mountain summit than upon a broad mountain mass (1) because in the former there is a very re- stricted area where snow. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bowman, Isaiah, 1878-1950; American Geographical Society of New York. New York, Published for the Americsn Geographical Society of New York by H. Holt
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Keywords: ., bookauthorbo, bookcentury1900, bookdecade1910, booksubjectgeology
