Fig. 49. 



Bacterium Bristolense. — Stained film specimen of the swollen inguinal 

 lymph gland of a guinea-pig injected into the groin with culture of the 

 microbe ; some of the bacilli are bipolar and oval, but many others seem 

 swollen up like involution forms. x 1000. 



Fig. 50. 



Stained film specimen of the subcutaneous local exudation of a mouse 

 injected with culture, showing numerous bipolar bacilli, some thicker than 

 others. x 1000. 



