Bui. 671, U S. Dept. of Agriculture. PLATE II. 





Fiq. 1.— Comb Containing Larv/e Dead of Sacbrood. 



Natural size. (White.) 



Fig. 2.— Stained Smear Preparation Showing Spores of Nosema apis. 

 Highly magnified. (Original.) 



SACBROOD AND NOSEMA SPORES. 



