[95 



The yield "I oil was [-87 per cent., bu1 as the material was collected in 

 tlic winter this may be taken as the minimum yield, rhe crude oil was orange- 

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

 belonging to the cineol-pinene group, with .1 secondary one indicating aroma- 

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

 phellandrene was absent. 



The crude oil had specifii gravity af 13 C. 0-9193; rotation a D -- i-i°; 

 refractive index .it 20 = 1-4630, and was soluble in i.J volumes 70 per cent. 

 alcohol. The lavo-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 

 bel"\\ 1 73° C. (con , showing the comparative absence of the low-boiling terpenes. 

 Between 173-185°, 82 per cent, distilled; between 185-215°, 8 per cent, (.one 

 215-230°, 4 per cent, distilled. These fractions gave the 



1 i\ er, and bet w een 

 fi tllowing results : 

 First fraction, 



sp. gr. at 15° C. = 



Second 

 Third 



refractive 

 refractive 

 refractive 



o-()l5 ; ; rotation ii„ o- 1 



index at 20° = 1-4610). 

 0-9161; rotation a D - 07 

 index at 20° = 1-4639. 

 0-9219; rotation a D - - 11-7 

 index at 20° = 1-4794. 

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

 The cineol was determined by the resorcinol method in the oil (hstilling below 

 185°; when calculated for the crude oil, the result was 86 percent. 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 F.ucarpyt were published by 

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



