Fig. II. — Pinnacle iMountain (10,062 feet =: 3,067.6 m.) with Sentinel Pass 

 (8,556 feet = 2,608.5 in.) on the left, near the head of Paradise \'alley. A 

 passinj? snow squall has whitened the slopes and old snow banks below the pass. 

 The pinnacles are eroded from the same kind of rock as that forming the 

 massive clitfs of Mount .Assinilioine. Photograph liy Walcott, 1916. 



Fig. 12. — The cliffs of Mount Hungabee at upper end of Paradise Valley, 

 showing expanse of the Horseshoe Glacier. Frequent avalanches of the fresh 

 fallen snow tumbled down the slopes to the fans above the glacier, as the rising 

 sun loosened their hold on the rock ledges. This illustrates very clearly the 

 formation of this type of glacier. Photograph by Walcott, 1916. 



