782 THE JOURNAL OF GEOLOGY. 



In a word of summary, it may be remarked that the glacier 

 conforms to the usual habit of Alpine glaciers of low latitudes. 

 Its surface and terminal contours are of the same type. Its 

 debris, where it does not take the form of lateral and medial 

 moraines, is found in the basal portion of the ice, and does not 

 appear at the surface except in the immediate terminal zone. 



The Middle Blase Dale Glacier. — -To pass from the glacier 

 just described to the next on the west side of the Blase Dale, it 

 is not necessary to descend to the bottom of the valley. A 

 moderate climb over a low intervening spur and a correspond- 

 ing descent brings us into the open valley partly occupied by 

 the middle glacier. The precipitous sides of this valley diverge 

 at a wide angle. Its bottom is a broad platform stretching from 

 cliff to cliff and extending a half mile perhaps in front of the 

 glacier beyond which it descends by a steep terrace into the 

 Blase valley. The general form and relations of the glacier 

 and its moraines are so well shown in the photographic illustra- 

 tion, Fig. ii, that little need is left for verbal description. In 

 all its essential characteristics it belongs to the same type as 

 the lower glacier. Its moraine is much more massive and bet- 

 ter developed. The point of observation is such as to make the 

 moraine in the central and left portions appear to be rather lat- 

 eral than terminal, but the little medial moraine at the left 

 shows that the direction of movement is essentially normal to 

 the margin, except at the extreme left. The profile shows the 

 crest and terminal slope of the ice, but it fails to bring out the 

 undulatory nature of the ice surface. On ascending the eastern 

 or right hand portion to the first crest, we were surprised to find 

 an actual descent into a very considerable valley, from which 

 the surface again rose to a second crest. In this valley a little 

 lakelet had accumulated. Fig. 12 shows imperfectly the depres- 

 sion of this valley into which one of my companions had 

 descended so far that only his head and shoulders remained vis- 

 ible. Of course the trustworthiness of the illustration depends 

 on the accuracy of the leveling of the instrument, but the for- 

 mation of the lakelet, and the descent of the streams into it, 



