550 



BACTERIOLOGY. 



almost black color. In these areas, in the bloody trans- 

 udates of the serous cavities, in the bile, and, after 

 death, in the internal organs, the organism to be de- 

 scribed can always be detected. It is manifest from 

 this that the soil of localities over which infected herds 

 are grazing may readily become contaminated through 

 a variety of channels, and thus serve as a source of 

 further dissemination of the disease. 



The organism was first observed by Feser, and subse- 

 quently by Bollinger and others. The most complete 



FIG. 90. 



Bacillus of symptomatic anthrax. A. Vegetative stage gelatin culture. 

 B. Spore-forms agar-agar culture. 



description of its morphological and biological peculi- 

 arities is that of Kitasato. 1 The following is from 

 Kitasato's contributions: it is an actively motile rod 

 about 3 to 5 // long by 0.5 to 0.6 // thick. It has 

 rounded ends, and, as a rule, is seen singly, though 

 now and then pairs joined end to end may occur. It 



1 Kitasato : Zeitschrift fur Hygiene, Bd. vi. S. 105; Bd. viii. S. 55. 



