CLASSIFICATION OF THE COLON-CLOACAE GROUP 



275 



SUMMARY 



From a statistical study of 333 coli-like bacteria isolated from 

 soil, sewage, and the feces of various animals, the following 

 classification is suggested: 



Lactose y- 





> r~oper?e 



Co//' 



5f arcfr 



S70ft//fy- 



Sacrose- 



&. c/c&cae 



j3. 



0. co/i 



3a/ic/'>? -f- Sa/ic/'a - 



* Designation as species questionable. Probably preferable to regard it as a 

 variety of B. communior. 



TABLE 11 

 Per cent of positive reactions 



* Ten questionable reactions included. 



The per cent of positive reactions of the different species is 

 indicated in table 11. B. neapolitanus differs from B. communior 



