400 E. GRIFFITHS. 



in a partial vacuum the last traces of solvent being removed 

 by gently heating the oil in a vacuum desiccator. By this 

 means 135 grams of oily matter were obtained. The oil 

 gave the following constants: — 

 Saponification equivalent or (Koettstorfer's number) 169*47 



Iodine number (Hiibl.) 86*4 



Acid value 1*26 



Specific gravity at 13° 0*8867 



Refractive index at 22° 1*4681 



Separation of the Constituents of the Oil.— In order to 

 separate any substances volatile in steam, about 100 cc. of 

 water were added to 100 grams of oil and a current of 

 steam passed through the mixture. The aqueous distillate 

 which amounted to about two litres, was colourless and 

 neutral to litmus, but had a marked odour. It was shaken 

 three times with ether, the ethereal layer was separated, 

 dried over calcium chloride and the ether removed by 

 evaporation. There remained about two drops of a yellow 

 viscid oil with a very marked odour. The quantity was 

 too small to examine further. After the distillation there 

 remained in the flask two liquid layers, (A) an upper oily 

 layer aud (B) a lower watery layer. Nothing could be 

 separated from the watery layer (B). The oily layer (A) 

 was separated and saponified by heating with alcoholic 

 potash. The alcohol was removed by evaporation and the 

 pasty residue thoroughly mixed with a quantity of pure 

 sand and dried oq the water-bath. The dried mass was 

 then placed in an extraction apparatus and extracted with 

 petroleum ether until all soluble matter was removed. The 

 material was by this means separated into two parts, (C) 

 that insoluble in the petroleum ether, and (D) that soluble 

 in that medium. 



Examination of portion (C) insoluble in petroleum ether. 

 — The petroleum ether was removed by heating on a water 



