8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 76 



of the glacier. Its dimensions are estimated to be 36 feet long, 18 

 feet wide, and 16 feet high. The cubic contents would be about 10,000 

 cubic feet. With some difBculty, it was climbed by Feuz, who erected 

 a little cairn on the downstream point out of loose fragments found 

 on the top. It was not otherwise marked. 



Another of these stones was utihzed as a marker for one end of the 

 base line (pi. i, fig. 2). It was painted " 1922" with white paint, 

 and lay 350 feet distant from the block just mentioned. The dis- 

 tance to Station A was computed to be 2,080 feet, and to B, 2,580 

 feet, the elevation being 5,960 feet. The azimuths between this 

 boulder and the ends of the line were : at A, 38°45', and at B, 30°25'. 



From Stations A and B, ]\It. Freshfield, Mt. David, and other 

 points on sheet 18 of the Boundary map were observed as controls. 



3. OBSERVATIONS ON THE TONGUE AND ITS RETREAT 



It was originally intended to make a detailed photographic survey 

 of the terminal ice tongue and the area adjacent, but this had to be 

 abandoned on account of the density of the smoke. A local secondary 

 triangulation, however, was carried out by the writer from a 305-foot 

 base, measured on the out-wash plain near camp. By this means a 

 boulder at the ice lip (H in pi. 2) was located, together with several 

 other features of importance, including a large stone on the north 

 lateral moraine to serve as a station for test views of the tongue. 



This rock is designated Station C. It was marked on the side 

 towards Camp Station, from which it is distant 505 yards, with a 

 three- foot cross (X) in white paint. The cross is visible from Camp 

 Station, but only upon careful scrutiny and with glasses. The stone 

 rests on the only sizable exposure of bed-rock on the north side of 

 the valley, about 45 feet above the flat ground moraine. It lies just 

 to the left of and above an oval-topped reddish stone plainly to be seen 

 from Camp Station. It was occupied with the camera July 20, and 

 the accompanying view secured (pi. 2). 



There is no question but that the glacier is retreating. The actual 

 end is a thin, semicircular, concave lip, furrowed with the typical 

 longitudinal depressions almost universally associated with this con- 

 dition. The frontal slope varies between 20° and 30°. As regards 

 the rate of retreat, there seem to be no precise data available. How- 

 ever, the writer is fortunate in being able to present a view (pi. 3, 

 fig. i) of the tongue secured by the late Hermann Woolley on the 

 occasion of his visit in 1902. Almost certainly this was taken very 

 close to Camp Station, and when compared with a similar photo- 



