BEHAVIOR OF BACTERIOPHAGE IN DISEASE 



441 



the infection, and with a somewhat lower grade of virulence for the stock 

 Shiga strain and for B. colt. 



The stools of eleven of the inmates of this institution were examined. 

 Among the number were nine who had shown intestinal disturbances 



Chart 2. Marie Leb (26 years) Dysentery (Shiga) 



!B. dysenteriae from the patient 

 B. dysenteriae, stock strain 

 B. coll 



Stools contained blood== 



two or three days previously. Two had shown no morbid symptoms. 

 All of those examined contained a bacteriophage with a high or maxi- 

 mum virulence for the Shiga strain isolated from the stool of Germaine 

 Mel as well as for the stock strain of Shiga and for B. coli. 



