BULL. GEOL. SOC. AM. 



VOL. 11, 1399, PL. 53 



Figure 1. — View Northwestward from Summit of Harney Peak 



Figure 'i. — Sylvan Lam.. South Dakot\ 

 Artificially formed lake in southern granite area of Black Hill 



SUMMIT OF HARNEY PEAK AND SYLVAN LAKE 



