NO 17, SMITHSONIAN EXPLORATIONS, IQ16 5 
during the summer, had made the conditions unusually favorable 
for taking photographs, the air being exceptionally pure and clear 
Fic. 6.—A magnificent early morning reflection of Mount Assiniboine in 
Magog Lake. Note the breeze that has just started at the upper end of the 
lake as shown by the horizontal streak across the water; also the enormous 
cones of snow at the base of rock cliffs, where ice and snow avalanches have 
broken from the face of the glacier above to form a second glacier extending 
down towards the shore line of the lake. Photograph by Walcott, ro16. 
during the field season—conditions, however, very unfavorable for 
geologic investigations. 
