HYDROGEN ION CONCENTRATION AND PROTEOLYSIS. 169 



Determination of the Rate op Proteolysis. 



The rate of proteolysis in media of different hydrogen ion concentration 

 stands as one of the most important phases of this investigation. The 

 method and also an example of such a determination has been treated 

 previously. The results will be given in terms of milligrams per 100 cubic 

 centimeters of the medium (Table X. and Graph 1). 



Table X. — Following the Proteolytic Activity. 



Milligrams in 100 cubic centimeters broth. 



