BULL. GEOL. SOC. AM. 



VOL. 16, 1904, PL. 13 



Figure 1. — Ober Grindei.wai.d Glacier 



An angular mass of rook appears, by the waning of the glacier, in the middle of the valley. The chalets in 

 the foreground are on an ancient moraine. August, 1903 



Figure 2, — Summit of Gkimski. Pass and Todtensee 



A heavy flow of ice once swept across this eol, but the bosses of rock an- merely rounded. August, L903 



GRIMSEL SUMMIT AND OBER GRINDENWALD GLACIER 



