34 



SOAPS AND PROTEINS 



tomic alcohols is shown photographically in Fig. 18 (^4. and B) 

 and graphically in Figs. It), 20, 21, 22, 23, 24, 25 and 26. The 

 findings are compounded in Fig. 27. In each instance a given 

 weight of soap had more and more of the various alcohols added 

 to it while in a warm water or boiling water bath, until, upon 

 reducing the temperature of the reaction mixture to 18 C., it 

 would no longer set into a diy gel. The actual volumes that it 



FIGURE 16. 



was found possible to add, while still accomplishing this end are 

 shown in Table XI. 



The tables, figures and graphs show that the tendency of the 

 various soaps to yield lyophilic colloid systems grows (1) with the 

 complexity of the soap in any given series and (2) with the complexity 

 of the alcohol used in the system. The only exception in the acetic 

 series is represented by margaric acid, but this may be explained 

 either by the fact that it is an odd carbon atom acid or that it 

 represents a eutectic mixture of stearic and palmitic acids. 



