104 
Plate XLII 
Alberta 
Pictures on Rock 
Picture cut on rocks in sec. 36, tp. 1, range 13, W. of 4th mer., Alberta, across Milk river 
from Writing-on-stone police barracks. From photograph by Charles M. Sternberg, 
on Geological Survey, Canada, expedition. Negative, Cat. No. 34741 in Museum. 
This type of art is found as far south as Wyoming, but not on the Pacific coast or east 
of the plains. The picture of the horse, at least, must have been made since Euro- 
peans came to North America. 
