EXPERIMENTS WITH HUMAN SUBJECTS 81 



the beginning of the experiment it constituted 90 to 99 per cent of the 

 viable intestinal organisms. Subject H failed to respond very readily, 

 but after the sixth day the transformation was practically complete, as 

 indicated by the agar plates and Veillon tubes. 



In every instance when simplification of bacterial types was effected 

 there was a sharp diminution of gas production in the Veillon tubes and 

 eventually complete or almost complete absence of gas. Furthermore, 

 the Gram-stained films revealed a picture in which 60 to 80 per cent of 

 the organisms were acidophilus-like rods. 



TABLE 41— SUBJECT D 



Ordinary Daily Diet + B. Acidophilus 300 cc. 

 (Whey Broth Culture, Neph. 5) 



