to3 



The leaves ol this sample were broad< i than was the i ase with other trees 

 oi this species growing in this locality, bul the oils from both forms were 

 practically identical; the constituents were the same, and these were presenl 

 in similaj proportions. 



The crude oil had specific gravity at 15 C. = 0-9155; rotation a„ + 5-5°; 

 refractive index al 20 = 1-4675, and was soluble in 1 1 volumes 70 per cent. 

 alcohol. The saponification number for the esters and free acid was 8-4. 



On rectification, about 1 per cent, distilled below 167 C. corr. . Between 

 167-183 , 85 per cent, distilled; between 183 250 , 3 per cent, came over, and 

 between 250-260°, 4 per cent, distilled. These tractions gave the following 

 results : 



First fraction, sp. gr. at 15° C. =0-9120; rotation a D + 6-5°. 

 Second ,, ,, ,, =0-925(1 ; ,, not taken. 



Third ,, ,, ., =0-9265; ,, not taken. 



The cineol, determined by the phosphoric acid method in the fractionated 

 oil. was 55 per cent. O.M. . indicating about 48 per cent, in the crude oil. 



The above sample of oil had been preserved in the dark, and in September, 

 1919, was again analysed. The increase in the specific gravity during the twenty 

 years it had been kept was distinctly shown, and an increase in cineol was also 

 evident. 



On rectification, 78 per cent, distilled below 190 C. The results with the 

 crude and rectified oils were as follow :— 



Crude oil. sp. gr. at 15 C. = 0-9609; rotation « D + 5. 6°; refractive 



index at 20° = 1-4692. 

 Fraction ,, ,, ,, = 0-9316; rotation a D + 4*2°; refractive 



index at 20 = 1-4585. 

 The cineol, determined by the resorcinol method in the portion distilling 

 below 190 , and calculated for the crude oil, was 74 per cent. By the phosphoric 

 acid Pharmacopoeia method, the cineol in the fraction was 80 per cent., or about 

 62 per cent, when calculated for the original oil. 



