578 PROCEEDINGS OF THE ACADEMY OF [DCC.^ 



immense thickness of the ice in recent times compared with what is 

 noted at present. 



Victoria Glacier. 

 Lake Louise, Laggan, Alberta. 



Almost as accessible as the lUecillewaet, the Victoria Glacier has never 

 received the same careful study owing in large measure to the immense 

 moraines which bury the tongue and the almost impossible task of 

 finding permanent base and line ends. The great boulder marked in 

 1899, and which the next season had moved with the ice 147 feet, has 

 not since been measured, but the position of the ice on the northwest 

 side, referred to several large angular blocks of red quartzite, has been 

 repeatedly determined. 



During the summer of 1898 these blocks slipped from the ice and fell 

 to the moraine below. On July 29, 1899, they were 20 feet from the ice ; 

 on July 24, 1900, 26 feet, showing a change of 6 feet for the year; on 

 September 1, 1903, 76 feet 6 inches, or an average yearly shrinkage of 

 almost 17 feet, while on July 30, 1906, the distance was but 74 feet 

 7 inches, showing practically no change, as the early date of measiu^e- 

 ment in 1906 compared with 1903 would make considerable difference 

 in the total figures. 



Wapta or Yoho Glacier. 

 YoHO Valley, Near Field, British Columbia. 



This glacier, located at the head of the Yoho Valley, is a very long 

 day's trip from Field, the station on the railway. On August 17, 1901, 

 the position of the tongue was marked on a large mass of bedrock 

 which had been recently uncovered by the ice. The tongue at this 

 time was a narrow blade of ice somewhat to the left of the axis of the 

 glacier and lying in a long deep groove between parallel ledges of rock. 

 Three years later the change was measured on August 7, 1904, as 89 

 feet, or an average yearly recession of almost 30 feet. At this time 

 there were signs of great activity and marked shrinkage. 



On July 15, 1906, almost a month earlier in the season than on the 

 occasion of the previous visit, the glacier was again observed and the 

 distance measured as 76 feet 7 inches, or about 12^ feet less than in 

 1904. Allowing for the earlier date, it may be said that the tongue 

 is in the same position as two years ago. The general aspect of the 

 ce showed that it was shrinking and retreating, and this was particularly 



