126 



includes the Hugh Miller, Charpentier, Geikie, and Wood 

 glaciers. The excursion will visit only Muir glacier, so the 

 others will not be discussed further. 



Muir glacier [62, 63] is by far the largest and most 

 important glacier of the region. It is fed from a broad, 

 semi-circular snowfield area, above which rise mountains 

 5,000 to 7,000 feet (1,560 to 2,700 m.) in height. Other 



Excursion C 8. 



Muir glacier on 1911. Ice resting on outwash gravels containing logs. Nearly 8 



miles north of position of ice front of 1899. The ice here was over 1,200 feet 



thick in 1802. 



glaciers descend northward and eastward from this area 

 to Lynn canal and from the valleys which extend north- 

 westward from its head. Davidson glacier is one of these. 

 A very large number of ice tongues from this snowfield 

 unite in a mountain-enclosed amphitheatre to form the 

 broad ice field of Muir glacier, with mountain peaks and 

 ridges rising above the ice surface. The total drainage 

 area of Muir glacier is about 800 square miles (2,000 sq.km.) , 

 with over 350 square miles (900 sq. km.) of glacier surface, 

 the two main tributaries having lengths of 20 and 22 miles 

 (32 and 35 km.). 



