VOL. 53, PL. 46 



OF PTARMIGAN LAKE AND NORTHEAST OF FORT MOUNTAIN, 6 MILES 

 BERTA, CANADA 



marks the line of contact of tlie Cambrian basal conglomerate with 

 tion. (Photograph by C. D. Walcott, 1909.) 



AST AND SOUTH FROM A POINT 4 MILES NORTHEAST OF LAGGAN, ALBERTA, CANADA 



)e is formed of the arenaceous shales of the TIector formation. The rounded hills in the foreground are former 

 ht are the high peaks of tlie Bow Range on the southwest siile of the Bow Valley. (.Photograph by C. D. Wal 



