of these men to survey the glacier by means of the usual methods employed in civil engineering Great Nisqually glacier shown just below the summit and at the right of it. Scientific exploring party in the and to determine its rate of movement and its depth. Stakes are driven in the ice foreground.… … Typical Crevasses in a Glacier of the Selkirks (British Columbia). HOW GLACIERS ARE STUDIED.—(See page 534.]
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