42 ABSAROKA DIVISION OF YELLOWSTONE FOREST RESERVE. 



down timber, partly the result of past fires, and partly of trees killed by over- 

 crowding in the too close-set stands. 



Humus. — Lacking, or a thin moss cover, on the northern slopes. 



Classification of lands in T. 4 S., JR. 10 E. 



Acres. 



Forested 8, 900 



Nonforested 12, 220 



Badly burned 1, 800 



Logged !' None. 



Agricultural None. 



Grazing None. 



Bare rocka and alpine 10, 420 



Total stand of timber in T. 4 S., R. 10 E. 



Lodgepole pine 



White-bark pine . . . 



Red fir, 



Subalpine flr 



Engelmann spruce . 



Total. 



Species. 



Mill timber. 



Feet B. M. 

 2, 000, 000 



2, 000, 000 

 500, 000 



4,500,000 



Pole and fuel 

 timber. 



Cubicfeet, 

 6,000,000 

 430, 000 

 3, 000, 000 

 1, 800, 000 

 2, 000, 000 



13, 230, 000 



Total volume of 

 all timber. 



OuMe/eel. 

 6, 360, 000 

 430, 000 

 3, 360, 000 

 1, 800, 000 

 2, 090, 000' 



14, 040, 000 



Composition of forest in T. 4 S., R. 10 E., including trees of all species viith basal diameters of 3 inches and 



upward. 

 ^ Per cent. 

 Lodgepole pine 65 



White-bark pine t '. _ . . 2 



Red fir 20 



Subalpine flr : 9 



Engelmann spruce 4 



Township 4 South, Eange 11 East. 



Topography. — The western part of the township comprises a rugged mass of 

 mountains — a portion of the main divide of the Absaroka Range. The central areas 

 are cut by the narrow and cliff-bound trough of West Boulder Canyon, while the 

 eastern portion consists of an elevated block of granite known as West Boulder 

 Plateau, which rises to an altitude of nearly 11,000 feet, and has a broad undulating 

 surface littered with great fields of bowlders. The plateau breaks off on the east 

 and west by sheer descents, 1,000 to 1,500 feet in depth, while short, bowlder-littered 

 canyons cut into its sides between immense, precipitous walls of rock. 



