

Fig. 63. 



Specimen of heart's blood of a guinea-pig dead after intraperitoneal 

 injection with B. 7nyxoides> showing great numbers of the bipolar bacilli, 

 x 1000. 



Fig. 64. 



From a section through the liver of a guinea-pig dead after subcutaneous 

 injection with B. pseudo-tuberculosis. The liver was pervaded by nodules, 

 some in the early stage (round cell masses), others already necrotised, 

 near the surface of the liver (upper part of the figure) ; one such necrotic 

 mass is shown, in which large and small aggregations (deeply stained masses) 

 of the bacilli are recognisable. x 50. 



