PATHOGENIC ANAEROBIC BACILLI. 



493 



Pathogenesis. Liver tissue containing this bacillus is very pathogenic 

 for guinea-pigs when injected subcutaneously, and causes an extensive in- 

 flammatory oedema extending from the point of inoculation. Pure cul- 

 tures of the bacillus are less pathogenic, and the few experiments which I 

 made in Havana gave a somewhat contradictory result, recovery having 

 occurred in one guinea-pig which received a subcutaneous injection of ten 

 minims of liquid from an anaerobic culture in glycerin-agar, while another 

 died at the end of twenty hours from a subcutaneous injection of three 

 minims, with extensive inflammatory oedema in the vicinity of the point of 

 inoculation. 



152. BACILLUS OF SYMPTOMATIC ANTHRAX. 



Synonyms. Rauschbrandbacillus, Ger. ; Bacille du charbon 

 symptomatique, Fr. 



First described by Bellinger and Feser (1878); carefully studied 

 and its principal characters determined by Arloing, Cornevin, and 

 Thomas (1880-83). 



FlQ. 167. 



FIG. 168. 



FIG. 167. Bacillus of symptomatic anthrax, from an agar culture. X 1,000. From a photomi- 

 crograph. (Frfinkel and Pfeifler.) 



FIG. 168. Bacillus of symptomatic anthrax, from muscles of inoculated guinea-pig. From a 

 photomicrograph. (Roux.) 



Found in the affected tissues of animals principally cattle suf- 

 fering from " black leg," " quarter evil," or symptomatic anthrax (Fr. f 

 "charbon symptomatique"; Ger., " Rauschbrand "). The disease 

 prevails during the summer months in various parts of Europe, and 

 is characterized by the appearance of irregular, emphysematous 

 swellings of the subcutaneous tissue and muscles, especially over the 



quarters, hence the name "quarter evil." The muscles in the 

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