CHAPTER IX. 

 MOUSE-SEPTICEMIA. 



IN 1878, during his investigations upon the infectious 

 traumatic diseases, Koch observed that when a minute 

 amount of putrid blood or of meat-infusion was injected 

 into mice the animals died of a septicemia caused by the 

 multiplication in their blood of a minute bacillus to 

 which he gave the name u Bacillus der Mausesepticamie " 

 (Fig. 117). 



FIG. 117. Bacillus of mouse-septicemia, from the blood of a mouse; x 1000 

 (Frankel and Pfeiffer). 



In 1885 * ne bacillus was again brought into promi- 

 nence by Loffler and Schiitz, who found a very similar, 



