Fig. \%1 .—Pleurotus ostreatus. Groups of fruit-bodies growing on the trunk of a Silver 

 Maple (Acer saccharinum). Diameter of the trunk about 2 feet 6 inches. Width of 

 the upper central fruit-body cluster, about 8 inches. The coin on one of the medium 

 right-hand fruit-bodies is a silver dollar. Photographed at Ithaca, New York State, 

 on October 25, 1911, by C. D. Learn. About J^ natural size. 



