B U BON 1C PLA GUE i o i 



ages, when in February, 1894, it made its appearance 

 in the city of Canton, China, and three months later 

 in Hong Kong. The disease is known to have 

 been epidemic in the province of Yunnan, which 

 is about nine hundred miles distant from Canton, 

 since the year 1873, but it attracted little atten- 



FIG. i. Bacillus of bubonic plague. A, magnified rooo diameters ; B, 

 more highly magnified to show li end-staining." 



tion until the lives of Europeans living in the city 

 of Hong Kong were threatened by the outbreak of 

 an epidemic among the Chinese residents of that 

 place. Many thousands of deaths occurred in Can- 

 ton during the three months which elapsed after its 

 introduction to that city before it effected a lodgment 

 in Hong Kong. 



Fortunately this outbreak gave the opportunity 



