It was a clear day in September. The boisterous winds which had swept the wide Canadian plain all summer had fallen and only a faint breeze stirred the yellowing leaves of the poplars. Against the glaring blue of the northern sky the edge of the prairie cut in a long, straight line; above the southern horizon rounded cloud-masses hung, soft and white as wool. Far off, the prairie was washed with tints of delicate gray, but as it swept in to the foreground...