VELOCITY OF REACTION. HETEROGENEOUS SYSTEMS l$t 



was elevated from 18 C. to 28 C. This corresponds to a 

 value for p of 16,700. 



SAPONIFICATION OF TRIACETIN BY MEANS OF LIPASE FROM THE CASTOR 

 BEAN AT i8C. (A. E.TAYLOR) 



Taylor thereafter investigated a suspension of triolein 

 (2 per cent) in water containing I g. of castor bean 

 powder in 100 c.c. The liquid was shaken vigorously. 

 He found the following values of A x for the days, 

 termed t. 



SAPONIFICATION OF A 2 PER CENT EMULSION OF TRIOLEIN AT i8C. BY 

 LIPASE FROM THE CASTOR BEAN (TAYLOR) 



/ (days) 012 3457 9111518 



Ax loo 97 95 92.5 91 89 84 78.4 72.8 66.9 61.9 



x:t 3 2.5 2.5 2.3 2.2 2.3 2.4 2.5 2.4 2.1 



Here evidently the transformed quantity (x) is, as the 

 last line indicates, proportional to the time. This is easily 

 explained. Through the strong shaking the water is a 

 concentrated solution of triolein, its content of triolein is 

 constant, independent of time. Therefore, as the concen- 



