BACTERIA OF THE COLON TYPE IN HUMAN INTESTINES 241 



TABLE 3 

 Showing percentage of positive physiological reactions 



TABLE 4 

 Per cent of positive reactions obtained with cultures from various sources 



* MacConkey, 1909. MacConkey's results are recalculated assuming that 

 all V and P positive cultures are B. aerogenes and V and P negative cultures are 

 B. coli. 



t Levine (1916). Includes cultures from horse, sheep, cow and man. 



shown in table 3 and figure 3. The correlation between the nature 

 of the fermentation as expressed by the resulting gases and the 

 ability to produce acid . from certain substances agrees very closely 

 with that which we have found in the colon cultures from other 

 sources and with the correlations found by other investigators. 

 This agreement is shown in table 4 which includes our own 



THE JOUnN.\I. OF B.\CTERIOLOGY, VOL. Ill, NO. .3 



