SERPENTINE GLACIER 



93 



favorable to luxuriant growth. Translating these facts into 

 terms of glacial history, it seems probable that the Barry 

 had been, at some time within the century, somewhat 

 larger than when we saw it, but that it had not for a series 

 of centuries exceeded the limit marked out by the neigh- 

 boring forest. If any change had occurred within the 

 last year or two it was of diminution. 



The opposite wall of the fiord is forested down to the 

 water's edge, and it is thus shown that no recent advance 

 of the glacier has carried it completely across the channel. 



Next west of the Barry is Serpentine Glacier, coming 

 down to the fiord from the north. It is a broad stream, 



of low grade, fed . _- 



by four or five 

 tributaries de- 

 scending steeply 

 from amphithea- 

 ters in the encir- 

 cling mountains. 

 Though it reaches 

 the sea, it yields 

 few bergs, but is 

 building a mo- 

 raine barrier 

 along most of its 

 front. Its medial 

 and lateral moraines are conspicuous, especially the north- 

 ern lateral. Like the Turner and Reid, it seems to rest 

 on a valley floor considerably above the floor of the 

 fiord to which it is tributary. Its most westerly branch 

 (fig. 50) heads in a high valley not fully commanded from 

 the fiord and falls to the main glacier in two fine cascades. 

 At the level of the upper cascade, 3,000 to 4,000 feet above 

 tide, are three hanging glaciers, perched in alcoves of the 

 valley wall where it curves to join the wall of the fiord. 



FIG. 50. SERPENTINE GLACIER. 



The main body of glacier lies behind the nearer hill at right. 



