BACTERIOPHAGY IN A FLUID MEDIUM 



57 



The experiments presented above reveal the following facts : 

 The final result of the phenomenon, that is to say, the total dissolu- 

 tion of the bacterial cells present in the suspension, does not depend 

 upon the quantity of the bacteriophage filtrate inoculated into the 

 suspension (d'Herelle^^°). We shall see, however, that although 



* Tests showed that this tube did not contain any of the bacteriophage 

 principle. 



quantity is a neghgible factor, the quality of the bacteriophage is the 

 most important feature of the phenomenon. 



The only influence exerted by the quantity of the bacteriophage 

 principle inoculated is in the time required for the completion of the 

 phenomenon (Kuttner;^^* d'Herelle^^^). 



