1907.] 



Disease of Bees. 



i37 



FIG. C. 



Fig. C. — Contents of colon of a diseased bee: p. 1, 2, p. 3 = pollen grains ; 

 <& = bacteria ; <r. = masses of wax. (From Thorley, March, 1907.) Fig/ D. — 

 Pollen grains from colon of a diseased bee. (From Great Whitcombe, March, 

 1907.) 



