SYSTEMATIC- AND DESCRIPTIVE. 315 



transparent drops, which become grey. They were 

 isolated from a patient suffering from profusely- 

 sweating feet. The cultivations yield a character- 

 istic odour similar to the last. They are pathogenic 

 in rabbits. They appear to be identical with 

 Bacillus foetidus {Bacterium foetidum. Thin). 



No. 3. See Bacterium saprogenes. 



Bacillus fcetidus (Bacterium fatidum, Thin). 

 Cocci, short rods, long rods, and leptothrix. The 

 cocci, 1*25 1*4 in diam., occur singly or in 

 pairs. Spore-formation present in the rods. They 

 were isolated from the exudation in a case of profuse 

 sweating of the feet, and the odour was noticeable 

 in the cultivation (vide Bacillus saprogenes). 



Bacillus putrificus coli, Bienstock. Slender, 

 motile rods, 3 p, in length, often less, sometimes 

 forming long threads. Spore-formation present. 

 Cultivations in gelatine are iridescent. They are 

 constantly present in faeces. 



Bacillus saprogenes fcetidus, Schottelius. 

 Rods with rounded ends, shorter, but about same 

 width as the hay- bacillus. Immotile; spore-forma- 

 tion present. On nutrient gelatine the colonies are 

 yellowish, and do not liquefy the medium. On 

 potatoes they form a pale grey layer. They develop 

 a strong rotting odour. They were isolated from 

 the organs and intestinal contents of pigs reputed 

 to be ill with swine-erysipelas. 



Bacillus aerophilus, Liborius. Slender rods, 

 two-thirds the width of the hay-bacillus, and 



