Fig. 25. 



Film specimen of peritoneal exudation of a guinea-pig dead after 

 peritoneal injection with B. pestis of attenuated type 2. Chains of bipolar 

 bacilli in a gelatinous matrix. x 1000. 



Fig. 26. 



Stained film of the peritoneal exudation of a guinea-pig dead after intra- 

 peritoneal injection with B. pestis, showing the bipolar bacilli embedded in 

 a gelatinous matrix, and simulating capsules. x 1000. 



