170 MASS. EXPERIMENT STATION BULLETIN 167. 



Grcuphic "Representation (/) 



Table 10 ^proteolysis) 



o ZY ^s 



iiCheck-) 



/^^ /9Z Z'i'O ^ou^S 



Table X. and Graph 1 indicate the proteolytic activity of B. suhtilis 

 during two hundred and forty hours' incubation at 37° C. From these 

 results the following deductions may be made : — 



1. The proteolysis occurred more or less in all the media including those 

 used as controls. This may be due to hydrolysis brought about by the 

 acid and alkali present, and also by the temperature of the incubator. 



