ANTHRAX IN ANIMALS 339 



though in smaller numbers than that in the capillaries. The 

 intestines are enormously congested, the epithelium more or less 

 desquamated, and the lumen filled with a bloody fluid. From 

 all the organs the bacilli can be easily isolated by stroke cultures 

 on agar. 



It is important to note the existence of great differences in 

 susceptibility to anthrax in different species of animals. Thus 



;^k - '- 



Fi'i. 103. Scraping from spleen of guinea-pig dead of anthrax, 

 showing the bacilli mixed with leucocytes, etc. (Same appearance 

 as in the ox.) 



" Corrosive film " stained with carl >ol-thion in -blue, x 1000. 



the ox, sheep (except those of Algeria, which only succumb to 

 enormous doses of the bacilli), guinea-pig, and mouse are all 

 very susceptible, the rabbit slightly less so. We have no data to 

 determine whether the disease occurs among the last three in the 

 wild state. Less susceptible than this group are the horse, deer, 

 goat, in which the disease occurs from time to time in nature. 

 Anthrax also occurs epidemically in the pig, often from the 

 ingestion of the organs of other animals dead of the disease. It 

 is, however, doubtful if all cases of disease in the pig described 



