PLATE XXII. 



Bacillus of septicaemia of mice. 



FIG. i. 



From a section of a kidney of a mouse which had died 

 after inoculation with a pure cultivation of the 

 bacillus. With moderate amplification, the white 

 blood-corpuscles have a granular appearance, and 

 irregular granular masses scattered between the 

 kidney tubules are seen. Stained with Gram's 

 method and eosin. x 200. 



FIG. 2. 



Part of the same preparation with high amplification. 

 The granular appearances are found to be due 

 to the presence of great numbers of extremely 

 minute bacilli. x 1,500. 



