64 UNIVERSITY OF COLORADO STUDIES 



snowy ice. The ice in the center must be over 75 feet thick and the 

 lower two-thirds of the ice-field is certainly hard, compact glacier- 

 ice. The motion is Hkely slow, owing to the contours, and the water 

 from beneath is only slightly whitened with rock-flour. This and the 

 next seem to me better entitled to the name glacier than any of the 

 other ice-fields of Colorado, except Arapahoe. 



Fair Glacier. — This ice is on the west side of the Front Range, 

 directly opposite and not far from Isabel Glacier. It was also dis- 

 covered by Mr. Fair, and I have given it his name partly because of 

 the fact that there are no well-known local names in the neighbor- 

 hood which can be applied to it, and partly because of a wish to recog- 

 nize his enthusiasm in the exploration of that difiicult region. In 

 our limited time on September 17, 19 10, we could not get down to 

 the surface of the ice, which is situated in a very difl&cult cirque, but 

 were close to it and examined it with excellent field-glasses. We 

 estimated it to be 1,500 feet wide and 2,000 feet high. The neve is 

 very steep. The bergschrund is well defined and about one-third 

 of the way down from the upper part of the neve to the end of the 

 glacier. Some distance below this the ice flattens, then passes down 

 abruptly into the front, which has a slope of probably 45°, and exposes 

 fine series of stratification lines bent into a double loop, indicating 

 two lines of maximum movement. The cirque faces the north. The 

 recessional moraines indicate recent rather rapid retreat. The water 

 of the lake just below the terminal moraine is very milky with the 

 rock-flour from beneath the glacier. 



Hallett Glacier. — This ice-field is so named because Mr. W. L. 

 Hallett, of Colorado Springs, in about 1883, stepped through a layer 

 of thin snow into a crevasse and narrowly escaped a serious accident, 

 which suggested the glacial character of the ice. In 1887 it was 

 visited by Chapin and Stone. ^ Stone says it is on the east face of the 

 north spur of Hague's Peak, in a small cirque hardly one-fourth of a 



' Chapin, Fredejuck H., Mountaineering in Colorado, W. B. Clarke & Co., Boston, pp. 97, 118, 3d ed., 

 1893; Stone, G. H., "A Living Glacier on Hague's Peak, Colorado," Science, Vol. X, pp. 153-54, 1887; " Re- 

 marks on the Glaciation of the Rocky Mountains," U.S. Geol. Surv., Mon., Vol., XXXIV, p. 351. See also 

 Mills, Enos A., "Canyon in Ice," Outdoor jCi/e, December, 1898; Eslcs Park, Colorado (a small pamphlet); 

 The Story 0/ Estes Park and a Guide Book, Outdoor Life Pub. Co., 1905; Wild Life in the Rockies, Houghton 

 MiflSin Co., pp. 234, 243, 1909; Burlington Route, Estes Park, Colorado, (folder with map and pictures). 



