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YEARBOOK, PUBLIC MUSEUM^ MILWAUKEE 



[Vol. IL 



start a landslide from near the top. Today it was our good fortune 

 to see one of these at close range, but a little down the canyon from 

 where we then were. Figure 49 shows the cloud of dust arising from 

 this slide. 



While our trip up to the foot of Wilson had looked relatively easy 

 and had started quite auspiciously, we soon began to encounter crevasses 

 which presented greater and greater difficulties. It was often neces- 

 sary to make long detours to find a snow bridge across a wide crevasse. 

 It must then be crossed with the utmost caution. Figure 50 shows Al 



Fig. 51. — Wilson Glacier, as seen from a point out on Xis(iu:illy Glacier, about 

 a third of a mile from the foot of the precipice over which the avalanches pour. 



feeling his way with the ice ax across one of these snow bridges. The 

 rest of us were tied into the rope behind him. Again we had to take 

 a flying leap to cross where no snow bridge could be found. 



In doing such glacier climbing, the rope should always be used for 

 safety, each member of the party being securely tied into it at a proper 

 interval from his nearest fellows. The heavyweight of the party is 

 usually placed on the rear end of the rope to act as an anchor in case 

 a snow bridge should break or some other accident should befall some 

 member of the party. Being possessed of a somewhat greater scale- 



