46 



VELOCITY OF REACTIONS 



COAGULATION OF MILK BY RENNET, 36-55 C. 



The same rule is valid for the digestion of gelatine 

 by a substance produced by Bacillus pyocyaneus. 

 By its action the gelatine is liquefied. The time 

 of liquefaction t is inversely proportional to the 

 quantity q of pyocyaneus ferment used. The 

 figures given in the following table, borrowed 

 from MADSEN and W ALBUM, give a proof of the 

 <7/-law. 



DIGESTION OF THYMOL-GELATINE BY MEANS OF PYOCYANEUS 



CULTURE AT 34-5 C. 



The saponification of fats by the steapsin from 

 the pancreatic juice is another example of the 



