484 



index of the first fraction, taken in conjunction with the low 

 specific gravity, is due to the influence of the cymene. 



The cineol was determined by the resorcinol method in 

 the first fraction. When calculated for the crude oil the 

 result indicated that 11 per cent, of that constituent was 

 present. 



For the determination and identification of the low-boil- 

 ing constituents in the oil of this species another portion was 

 distilled. The oil which came over below 185° C. was added 

 to that of the first distillation and the whole redistilled, using 

 a fairly long rod and disc stillhead. Although commencing 

 to distil at 157°, yet only 7 per cent, distilled below 170° C. 

 (corr.) ; by 173° 38 per cent, had come over. The three 

 fractions were separated as follows: 157-173°, 38 per cent.; 

 173-175°, 31 per cent.; 175-179°, 15 per cent.; residue boil- 

 ing above 179°, 16 per cent. 



The results obtained with these fractions were as fol- 

 lows : — 



First fraction 

 Second fraction 

 Third fraction 

 Residue 



Sp. gr. at 15° C 



0-864.7 

 0-8676 

 0-8714 

 0-9O63 



Ref. index at 20°. 



T4777 

 1-4806 

 1-4812 



T4880 



It is thus evident that the amount of pinene can be "but 

 small, and that it is either inactive or slightly laevorotatory. 

 The high refractive index, taken with the low specific gravity, 

 suggests the presence of cymene. 



Cineol was detected in all three fractions, and as this 

 constituent was small in amount an endeavour was made to 

 remove it by agitating each fraction with 50 per cent, 

 resorcinol. The uncombined portions were removed, washed, 

 and dried. The influence of cineol is shown from the follow- 

 ing figures, when compared with those given above: — 



First fraction 

 Second fraction 

 Third fraction 



Ref. index at 20°. 



1-4805 

 T4842 

 1-4856 



