PLATE XVII. 



FIG. i. Bacillus anthracis. 



Bacteridie du charbon. 



Bacillus of splenic fever, woolsorter's disease, or 

 malignant pustule, 



From a section of the liver of a mouse which had died 

 after inoculation with a pure cultivation of the 

 bacillus. The bacilli are seen to have threaded 

 their way between the liver-cells. The prepara- 

 tion is triple-stained by combining the methods 

 of Weigert and Orth. x 500. 



FIG. 2. Bacillus anthracis and Micrococcus 

 tetragonus. 



From a section of a lung of a mouse which had been 

 inoculated with anthrax three days after inocula- 

 tion with Micrococcus tetragonus. A double or 

 mixed infection resulted. Anthrax bacilli 

 occurred in vast numbers, completely filling the 

 small vessels and capillaries, and in addition there 

 were great numbers of the characteristic tetrads. 

 Stained with Gram's method (gentian violet), and 

 eosin. x 500. 



