CHAPTER XXXVI. 
BUBONIC PLAGUE BACILLUS—YELLOW FEVER 
BACILLUS—WHOOPING-COUGH BACILLUS. 
BACILLUS OF BUBONIC PLAGUE (Bacillus Pestis 
Bubonice —Kitasato; Bacterium Pestis). 
DISCOVERED simultaneously by Kitasato and Yersin 
(1894) during an epidemic of the bubonic plague in 
China. It is found in large numbers in the pus from 
Fig, 82. 
Bacillus of bubonic plague. > 1000 diameters. 
the buboes characteristic of this disease and in the 
lymphatic glands; more rarely in the internal organs 
and in the blood, in which it occurs in acute hemor- 
