(oe) 
NO. SMITHSONIAN EXPLORATIONS, I913 9 
tumbling down the slopes (fig. 5) and often disappear beneath the 
glacier to reappear at its foot with the volume of a river (fig. 8). 
At Field, British Columbia, work was continued at the great Cam- 
brian fossil quarry, where a large collection of specimens was secured. 
The conditions were such that it was necessary to do much heavy 
blasting to reach the finest fossils which occur in the lower layers 
of rock. Figure 10 shows the north end oi the quarry below the sharp 
Fic. 11.—South end of fossil quarry, where many of the most beautiful 
specimens were secured from the lower three feet of beds. Near Field, British 
Columbia, Canada. Photograph by C. D. Walcott, 1913. 
summit of Mount Wapta, and, in the distance, the President Range 
with Emerald Lake at its base. The south end of the quarry is illus- 
trated by figure 11 ; here the solid beds were blasted out to a depth of 
BEARS. 
Owing to the presence of a fault line, just north of the quarry, 
and the twist and compression of the rocks south of it, the available 
area for successful collecting is limited to about 200 feet. In other 
localities where the shale outcrops on the ridges in the vicinity, com- 
