5^4 



G. K. GILBERT 



Fig. 4. — Eastward from Mount Conness, Sierra Nevada. In the foreground is 

 the upper edge of a small glacier with its head cliff and bergschrund. Farther away 

 the "descending continuation of the same cliff springs from a schrund line, the exact 

 position of which is masked by a lingering snow-drift. 



