398 



MALIGNANT (EDEMA. 



have the usual high powers of resistance, and may be kept 

 for months in the dried condition without being killed. 



Experimental Inoculation. A considerable number of 

 animals the guinea-pig, rabbit, sheep, and goat, for ex- 



J 



A B c 



FIG. 102. Stab cultures in agar, five days' growth at 37 C. Natural size. 



A. Tetanus bacillus. B. Bacillus of malignant oedema. C. Bacillus of 



quarter-evil (Rauschbrand). 



ample are susceptible to inoculation with this organism. 

 The ox is said to be quite immune to experimental inocu- 

 lation, though it can, under certain conditions, contract 

 the disease by natural channels. The guinea-pig is the 

 animal most convenient for experimental inoculation. 

 When the disease is set up in the guinea-pig by sub- 

 cutaneous inoculation with garden soil, death usually occurs 



