DESCRIPTION OF PLATE VI. 

 Bacillus Murisepticus. 



FlG. 1. From a section of a kidney of a mouse which had died after inocula- 

 tion with a pure-cultivation of the bacillus. With moderate amplification, 

 the white blood-corpuscles have a granular appearance, and irregular 

 granular masses are scattered between the kidney tubules. Stained by 

 Gram's method with eosin. x 200. 



FlG. 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 1500. 



