THE VARIATIONS OF GLACIERS 665 



shorter than in 1818. It seems to be advancing sHghtly at the present, 

 although the other glaciers of the region, and those in the nearby 

 regions of Maurienne and Tarantaise are retreating. Large-scale 

 maps of the ends of several glaciers have been made for future com- 

 parisons. Several small glaciers have entirely disappeared. A 

 number of glaciers measured in the Dauphine are retreating rapidly 

 and some small ones have disappeared. 



Pyrenees. — The glaciers are retreating but the precipitation was 

 heavy during the previous winter, and two glaciers are getting thicker 

 in their upper portions.^ 



Norway. — The four glaciers measured in the Folgefon and in 

 the Jostedal have advanced from 15 to ^,2^ meters since 1905. In 

 the Jotunheim seven glaciers have advanced and nine have retreated 

 during the year. The greatest advance was 12.8 meters and the 

 greatest retreat 22.5 meters,^ 



Russia. — Two glaciers on the northern slope of the mountain chain 

 of Peter the Great, Boukhara, are rapidly melting back, whereas a 

 glacier on the southern slope of the same chain is, according to 

 observations in 1905, notably advancing. A number of glaciers are 

 reported in the Tian Chan mountains and, although not measured, 

 several seem to be advancing.^ 



Canada. — The report contains an interesting summary of the 

 observations of the Messrs. Vaux on the Illecillewaet, Asulkan, 

 Wenkchemna, Victoria, Wapta, and Horseshoe Glaciers, since 1898. 

 It will be unnecessary to repeat the details here as the article has 

 been published in extenso in this country. ^ Suffice to say that these 

 glaciers have in general retreated, but at a diminishing rate; the 

 Asulkan has advanced slightly, but has retreated again to its position 

 of 1899; the Illecillewaet continues to retreat, but photographs show 

 that the upper part is getting thicker, and it will be interesting to 

 determine how soon this will affect the end.^ 



1 Report of M. Ch. Rabot. 



2 Report of M. P. A. Oyen. 



3 Report of Colonel J. de Schokalsky. 



4 " Observations made in 1906 on Glaciers in Alberta and British Columbia," 

 Proc. Philad. Acad. Nat. ScL, 1906, pp. 568-79. 



5 Report of MM. George and William S. Vaux. 



