Fig. 51. Large aspen partly cut by beaver. The tree measured 4.6 feet in 

 circumference above the notch. Photographed July 22, 1921. 



Fig. 52. The large aspen after it had been felled. Photographed September 4, 

 1921. It was still standing August 28. The rule on the stump is 

 six inches long. 



