Magnified. h.. diameters by. 
— i 
f. 
Photo-Micrographic Negative No ...3uL^.U. New Series 
By J. J. WOODWARD, Ami. Surg., U. S. A. 
BY ORftEK op the Sdroron Oenp.ral. 
WAR DEPARTMENT, 
Surgeon General’s Office , Army Medical Museum. 
