U. S. GEOLOGICAL SURVEY 



BULLETIN 612 PLATE Vlll 



A. VIEW NEAR DALE CREEK STATION, WYO., SHOWING CHARACTERISTIC WEATHERING OF 



THE SHERMAN GRANITE. 



B. SMALL "SODA LAKE" ON THE PLAIN NEAR LARAMIE, WYO. 



The bed of the "lake," which contains water only in wet weather, is when dry covered with a white incrusta 



tion of salts, mostly alkali, left by the evaporation of the water. 



