23,6 Perkins and Cruz: Oils in Chaulmoogra Group 559 



4. Thirteen of the above-mentioned oils were partially re- 

 solved by the fractional distillation of the ethyl esters of their 

 fatty acids followed by a crystallization of the recovered fatty 

 acids from each of four fractions. The eight resulting fatty acid 

 fractions from each oil were examined for freezing point, iodine 

 absorption, specific rotatory power, and saponification number. 



5. Previous results placing Gynocardia odorata outside of the 

 chaulmoogra group have been confirmed. Pangium edule ap- 

 pears to contain no chaulmoogric or hydnocarpic acid. 



6. Hydnocarpus alcalde was found, in confirmation of Brill's 

 results, to contain a large amount of chaulmoogric and little or 

 no hydnocarpic acid. The remaining Hydnocarpus oils studied 

 were found very similar to chaulmoogra in chemical composition. 



