VJ* ••«j/ , , ^^ ,-„„*.. 



1' >^>^K ^ >,'f-"^^m'*'/.^" ^r 



Fio. 1. This illustration shows a normal comb of healthy brood. Note how compactly 

 the brood is placed, with very few unsealed cells intervening. 



Fig. 2. This illustration shows a comb containing American foulbrood in an ad- 

 vanced stage. Note the spotted appearance of the brood caused by scattered sealed 

 cells. (Courtesy of the A. I. Eoot Co.) 



