Fig. 5. 



Stained film of the inguinal bubo of a rat, cutaneously infected with 

 a trace of culture of B. pestis. x 1000. 



Fig. 6. 



Stained film of inguinal bubo of a rat, after being inoculated cutaneously 

 at the root of tail with pharyngo-laryngeal mucus of a rat dead of plague 

 with extensive pneumonia. x 1000. 



