195 



The yield of oil was 1-87 per cent., but as the material was collected in 

 the winter this may be taken as the minimum yield. The crude oil was orange- 

 brown in tint, indicating but a trace of phenol, and had an odour similar to those 

 belonging to the cineol-pinene group, with a secondary one indicating aroma- 

 dendral. Volatile aldehydes were pronounced. The oil was rich in cineol, and 

 phellandrene was absent. 



The crude oil had specific gravity at 15 C. = 0-9193; rotation a -- 1-1; 

 refractive index at 20 1-4639, and was soluble in ij volumes 70 per cent, 

 alcohol. The laevo-rotation shown by this oil is due to the aromadendral. The 

 saponification number for the esters and free acid was 8-5. 



On rectification a few drops of acid water with some aldehydes came over 

 below 173 C. (corr.), showing the comparative absence of the low-boiling terpenes. 

 Between 173-185, 82 per cent, distilled ; between 185-215, 8 per cent, came 

 over, and between 215-230, 4 per cent, distilled. These fractions gave the 

 following results : 



First fraction, sp. gr. at 15 C. = 0-9153; rotation D - - 0-1; refractive 



index at 20 1-4619. 

 Second ,, ,, ,, = 0-9161; rotation D - - 0-7; refractive 



index at 20 1-4639. 



Third ,, ,, ,, = 0-9219; rotation a D -- 1.1-7; refractive 



index at 20 = 1-4794. 



The high laevo-rotation of the third fraction is due to the aromadendral. 

 The cineol was determined by the resorcinol method in the oil distilling below 

 185; when calculated for the crude oil, the result was 86 per cent. By the 

 phosphoric acid method it was 63 per cent. (See also further analysis under 

 " Quantitative Determination of Cineol.") 



The rectified oil was slightly yellow in tint, due to the particular phenol 

 present. 



There is a strong resemblance between the oil of this Eucalypt and 

 that of " Narrow Leaf," E. cneorifolia, and for commercial purposes no marked 

 differences could be detected between the products of the two species. 



The results obtained with the oil of this l ; ucalpyt were published by 

 us in the Trans. Roy. Soc., South Australia, 1916. 



