Forest physiography; physiography of the United States and principles of soils in relation to forestry . water remains only in poolsin the deepest portions of the stream channels. The outer foothillsand valley openings have been occupied by ranchmen who also utilizethe water for limited irrigation. Extensive pastures are found on thehigher slopes, though these give way to true forests of small pines on thenorthern exposures. In many places there are dense thickets of lodge-pole pine. The name Highwoods undoubtedly had its origin in theforest growth of the northern si opes.^ LITTLE ROCKY MOUNTA
Forest physiography; physiography of the United States and principles of soils in relation to forestry . water remains only in poolsin the deepest portions of the stream channels. The outer foothillsand valley openings have been occupied by ranchmen who also utilizethe water for limited irrigation. Extensive pastures are found on thehigher slopes, though these give way to true forests of small pines on thenorthern exposures. In many places there are dense thickets of lodge-pole pine. The name Highwoods undoubtedly had its origin in theforest growth of the northern si opes.^ LITTLE ROCKY MOUNTAINS The Little Rocky Mountains lie about 200 miles east of the RockyMountain Cordillera and between the Missouri and the Milk about 60miles south of the 49th parallel. They rise from 2000 to 3000 feetabove the treeless plains of central Montana, forming a conspicuoustopographic feature in a plains region that is generally without 1 L. V. Pirsson, Petrography and Geology of the Igneous Rocks of the Highwood Moun-tains, Montana, Bull. U. S. Geo!. Surv. No. 237, 1905, pp. 1-22. 450 FOREST PHYSIOGRAPHY. PLATEAUS AND RANGES OF THE PLAINS COUNTRY 451 prominent landmarks. Their topographic prominence led the Indiansto call them Eah hea Wwetan, or the Island Mountains. The Little Rocky Mountains have an undulating crest without sharppeaks. The highest summit is more than 6500 feet above the sea,though only about half that height above the surrounding plains. Thescenery is attractive but not grand, for the mountain summits aregenerally rounded, without that boldness that is the striking feature ofmost alpine scenery; and to this softness of outline is added the soften-ing effect of a thick growth of small pines, which covers almost all of thesummits. Perhaps the most picturesque aspects of the mountains aredeveloped about their borders, where heavily bedded limestones (Car-boniferous) are cut by deep narrow canyons variegated by a vegetationthat stands in pleasing contrast to the dry pl
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
