THE VARIATIONS OF GLACIERS 51 



REPORTS ON THE GLACIERS OF THE UNITED STATES FOR 1906^ ^ 



The snow fall in the Rocky Mountains in the summer of 1905 was 

 very heavy and perhaps for that reason the Hallet Glacier shows a 

 sHght advance (Mills). But there has been a slight retreat at the 

 north end of Arapahoe Glacier, which is not far from the Hallet 

 (Henderson). The glaciers in the Montana Rockies are either station- 

 ary or shghtly retreating (Chaney). A small glacier reported in 

 Bighorn Mountains of Wyoming has apparently disappeared (Salis- 

 bury). 



On the north side of Mt. Hood, Washiagton, Ehot Glacier is 

 diminishing very markedly. The ice is growing much thinner at 

 the end and a more rapid retreat will probably appear before long. 

 Some of the snowfields are greatly altered and the ascent of the moun- 

 tain has been rendered much more difficult than heretofore (Mrs. 

 Langille). On the south side of Mt. Hood, the White Glacier has 

 diminished in thickness but does not seem to have receded materially 

 (Montgomery). Glacier Peak, in Washington, was cHmbed last sum- 

 mer by Mr. C. E. Rusk. He found that the glaciers showed signs 

 of retreat but less than in other places in Washington; these glaciers 

 carry comparatively Httle debris. Mount Baker was visited last sum- 

 mer by the Mazama Club, of Portland, Oregon; their magazine con- 

 tained many excellent pictures of the glaciers and a sketch map of the 

 mountain, showing a number of distinct glaciers, but no information 

 is given as to the recent changes. When this mountain was visited 

 in 1903 by Messrs. Rusk and Campbell there was a small, well- 

 marked crater at the summit, about 50 feet in diameter, from which 

 considerable volumes of black smoke were rolhng away. In 1906 

 this vent was completely filled with snow and no evidence of its 

 existence appeared except a slight depression in the surface of the 

 snow (Rusk). 



Last summer Messrs. F. E. and C. W. Wright visited Glacier 

 Bay and repeated the survey which was made in that region in 1892. 

 They found very remarkable changes in all the glaciers. The only 

 definite information we have had of any of these glaciers since 1899, 



I A synopsis of this report will appear in the Twelfth Annual Report of the Inter- 

 national Committee. The report of the glaciers of the United States for 1905 was given 

 in this Journal, Vol. XIV, pp. 406-10. 



