BACILLUS ANTHRACIS SYMPTOMATICI 563 
taken for anthrax bacilli are the bacillus subtilis and 
the bacillus of malignant cedema. The former is dis- 
tinguished by its motility, by various cultural peculi- 
arities, and by being non-pathogenic. The latter differs 
from the anthrax bacillus in form and motility, in being 
decolorized by Gram’s solution, in being a strict anaér- 
obe, and in various pathogenic properties. 
The diagnosis of internal anthrax in man is by no 
means easy, unless the history points definitely to infec- 
tion in the occupation of the individual. In cases of 
doubt cultures should be made and inoculations per- 
formed in animals. According to Cornil and Babes, 
some of these cases may possibly be caused by organ- 
isms other than the bacillus of anthrax. 
BACILLUS ANTHRACIS SYMPTOMATICI. 
(Bacillus of Symptomatic Anthrax.) 
Like the bacilli of anthrax and of malignant oedema, 
both of which it resembles in other respects also, the 
bacillus of symptomatic anthrax is an inhabitant of the 
soil. Itis found as the chief cause of the disease in 
animals—principally cattle and sheep—affected with 
what is known as “black leg,’’ ‘‘ quarter evil,’’ or 
symptomatic anthrax (German, rauschbrand; French, 
charbon symptomatique), a disease which prevails in 
certain localities in summer, and is characterized by a 
peculiar emphysematous swelling of the subcutaneous 
tissues and muscles, especially over the quarters. 
Morphology. Bacilli having rounded ends, from 
0.54 to 0.6u broad and from 3y to 5yu long; mostly 
isolated, also occurring. in pairs, joined end-to-end, 
but never growing out into long filaments, as the an- 
