202 BACTERIA 



well known during the late war. Their connection with this 

 so-called "Trench mouth" is not so generally accepted as is the 

 case with ulcerative angina but their discovery should suggest 

 remedies, salvarsan, silver nitrate, which have been useful in 

 Vincents Angina. 



SPIRILLACE^E 

 CHOLERA BACILLUS 



Vibrio Cholerse. Koch. 

 Spirillum Cholera (Fig. 61). 

 Cholera Bacillus. 

 Comma Bacillus. 



Morphology and Stains. Curved or bent rods, the ends not 

 lying in the same plane. This bending varies greatly. Under 



FIG. 61. Cholera spirilla. (Kolle and Wassermann.) 



certain conditions of growth such as the presence of alcohol, or 

 insufficient albumin or oxygen in culture media, long spiral chains 

 are formed. It is motile, has one terminal flagellum, and like 

 other members of this family, has no spores. It stains well with 

 the common dyes but not by Gram's method. Dilute fuchsin 



