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



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



(Original.) 





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Fig. 2 —Heavy Sacbrood Infection, Showing a Number of Different Stages 

 of Decay of Larwe. Eggs, Young Larwe in Different Stages of Develop- 

 ment, and Diseased Larv/E in Same Area. Natural Size. (Original.) 



SACBROOD PRODUCED BY EXPERIMENTAL INOCULATION. 



