Bui. 431, U. S. Dept of Agriculture. PLATE I. 





Fig. 1.— Marked Sacbrood Infection. Size Slightly Less than Natural. 



(Original.) 









Fig. 2.— HEAvy Saclirood Infection, Showing a Number of Different Stages 

 OF Decay of Larv/e. Eggs, Young Larv/c in Different Stages of Develop- 

 ment, AND Diseased Larv/e in Same Area. Natural Size. (Original.) 



SACBROOD PRODUCED BY EXPERIMENTAL INOCULATION. 



