84 AB8AB0KA DIVISION OF YELLOWSTONE FOREST BE8ERVE. 



timber large enough to supply fuel to the mines and to the stamp mill, where steam 

 is used for motive power. 



Bums.—^la&rge tracts in the valley of the Boulder and in the northeast quarter 

 have bean burned over during the past eight or ten years. The timber on the 

 burned tracts has in most cases been totally destroyed. 



Reproduction. — ^The young growth throughout is scanty and scattered. There 

 is little restockage in the burns. 



Undergrowth. — Light. 



Litter. — In the stands on the west of Boulder Canyon the litter, composed of 

 fallen timber killed by overcrowding, is abundant. Elsewhere litter is light. 



Humus. — On most of the slopes with northern exposures there is usually a thin 

 moss cover. Elsewhere humus is lacking. 



Olaggificatim of lands in T. 7 S., R. 1^ E. 



Acres. 



Forested 10,540 



Nonforested 12,500 



Badly burned 3,000 



Logged 4,000 



A^icultural None. 



Grazing 4, 500 



Bare rocks ■. 3,800 



Tarns 1,200 



Total stand of timber in T. 7 S., E. 12 E. 



Species. 



Mill timber. 



Pole and fuel 

 timber. 



Total volume of 

 all timber. 



T 



Cubic feel. 



13, 800, 000 



2, 000, 000 



680, 000 



4,000,000 



16, 620, 000 



Lodgepole pine 



White-bark pine... 



Bed fir 



Subalpine fir 



Engelmann spruce . 



Total. 



Feel B. M. 

 10, 000, 000 



1, 000, 000 



9, 000, 000 



20, 000, 000 



OubiKfeet. ■ 

 12, 000, 000 



2, 000, 000 

 500, 000 



4, 000, 000 

 15,000,000 



33, 500, 000 



37, 100, 000 



Composition of forest in T. 7 S., R. 12 E., including trees of all species with basal diameters of S inches 



and upward. ' 



Per cent. 

 Lodgepole pine 60 



White-bart pine 4 



Bed fir 15 



Subalpine fir 9. 5 



Engelmann spruce 25 



