Forest physiography; physiography of the United States and principles of soils in relation to forestry . 10,400 feet; the elevations of the wind gaps are from 5400 to 6000feet. The Livingston range extends from Mount Heavens north of Mc-Donald Lake northwestward to Mount Head in British Columbia. Itlies west of the Lewis range in the United States, but the latter rangeends near the international boundary and in Canada the front range is ROCKY MOUNTAINS. I 309. c > O I- f^ 3. ^ c/5 c 2 .S£ 3 & o-1) 1-J o a. ^ =^ 310 FOREST PHYSIOGRAPHY the Livingston. The main continental divide follows the
Forest physiography; physiography of the United States and principles of soils in relation to forestry . 10,400 feet; the elevations of the wind gaps are from 5400 to 6000feet. The Livingston range extends from Mount Heavens north of Mc-Donald Lake northwestward to Mount Head in British Columbia. Itlies west of the Lewis range in the United States, but the latter rangeends near the international boundary and in Canada the front range is ROCKY MOUNTAINS. I 309. c > O I- f^ 3. ^ c/5 c 2 .S£ 3 & o-1) 1-J o a. ^ =^ 310 FOREST PHYSIOGRAPHY the Livingston. The main continental divide follows the Livingstonrange for some distance southward of the boundary, descending to FlatTop Mountain and finally to the Lewis range, which it follows southwardto latitude 46° 45. Like the Lewis range the Livingston is often nar-row and presents massive mountain peaks of pyramidal outline. Deepvalleys diversify its western slope and contain long narrow lakes whichvary in length from two to ten miles. The lakes are bordered by slopesof gravel or talus, except at their heads, where cHffs rise precipitouslyto the range summits. The western limit of the Livingston Moun-tains is definite, but it has the aspect of a bold mountain face risingfrom foothills rather than the almost sheer face of the eastern marginof the Lewis Mountains rising abruptly from the plains. The Lewis and Livingston ranges are characterized by the dominantinfluence of structure on altitude
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
