71 



Symptoms of Foul-brood. 



We need not at present concern ourselves about the distinction 

 of germs causing disease, so long as we know and can detect the 



Fig. 53. — Four, -BROOD : Portion of Diseased Comb (Natural Size). 



symptoms of the form of foul-brood we are troubled with. Healthy 

 brood in the larva stage^-that is, before it is sealed or capped — ^presents 

 a clear pearly whiteness, but when attacked, which is usually about 



