63 



two phases and (hat in this case the process of the saponification 

 is governed bj the value of the surface tensions between the gly- 

 cerides and the saponifying medium. 



As velocities of saponification do not give an insight here in the 

 mechanism of the reaction, because they are influenced by the 

 variable fineness of the emulsion, equations were derived which 

 give the relation between separated fatty acid and separated 

 glycerine. 



The equations, in which the increase of concentration of the 

 lower glycerides at the surface of contact between fat and water- 

 phase were taken into acount, appeared to be able to account for 

 the different course of the saponification in different surroundings. 



Jn conclusion I gladly avail myself of the opportunity to express 

 my thanks to Dr. Geitel for the kind interest he has taken in 

 my work. 



Laboratory of the Royal Stearine 

 Candle Works "Gouda". 

 Gouda, November 1916. 



