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8. SECTIONAL VIEW OF SNOW, ICE AND ROCKS WHICH CAME DOWN NEAR OUR CAMP. 



The outer portion of this moving- mass of snow was obstructed by the adjacent timber. The inner 

 body was forced on down, the dividing line being cut as clean as if with a great knife. The perpen- 

 dicular wall _ shown in the left of the picture was at least 20 feet high and almost as smooth as a sheet 

 of glass. This snow was badly discolored from the earth which was ground up with it 



9. A SECTION OF THE SLIDE WHICH CAME DOWN AT THE MARMOT DEN I MILE ABOVE 



OUR CAMP. 

 This moraine covered about 4 acres of ground to a depth of 20 to 50 feet. The snow was not con- 

 taminated in the least by contact with the earth on its way down, but was deposited in the bottom of 

 the canyon as pure and white as when it left the clouds. 



346 



