26 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. DO 



remarkable features of Robson Peak on the north is Blue Glacier. 

 It is two miles in horizontal distance, and 7.000 feet in vertical fall 

 between the snow cornices of Robson Peak and the foot of the 

 glacier where the ice breaks off to float away as small bergs. Blue 

 Glacier is a wonderful stream of falling, shearing, blue, green, and 

 white ice. As seen in figure 24 the details of its marvelous descent 

 are finely shown. 



Iyatunga Mountain and Titkana Peak form the gateway to the 

 great Hunga Glacier which is literally a river of ice. In figure 



Fig. 24. — Kodak view of Blue Glacier, with Robson Peak concealed l>y mist. 

 Photograph by Walcott, 1912. 



27 three miles of its lower length is shown ; the upper part is exhib- 

 ited by figure 2<S, where the gathering fields of snow arc seen on the 

 slopes of Robson I 'eak and Mount Resplendent, and below the flow of 

 the glacier over the cliffs where it merges into the broad river-like 

 extension below. 



The geological section was measured from Moose Pass (figure 30) 

 southwestward over Tab Teak, Mount Mahto, Titkana Peak, and 

 across by Phillips Mountain and the ridges of Lynx Mountain to 

 Robson Peak. 



