56 



I Ins sample oi oil had been preserved in the dark, and in October, igig, 

 twenty-one years afterwards, was again analysed. It had become a little 

 lu\i\ ni .Hid the optical activity had lessened a little also, otherwise the alteration 

 which had taken place in the oil during all that period was small. Between 

 157 104 . 53 per cent, distilled; and between 164 178 , 23 per cent, came over. 

 The crude oil and the fractions gave the following results : — 

 Crude oil, sp. gr. at 15 C. = 0-9006 ; rotation a D — 35-8 



at 20°= 1-4709. 

 hirst traction ,, ,, = 0-8742; rotation a„ — 38-1 



at 20 = 1-4646. 

 Second ,, ,, ,, = 0-8832; rotation a D — 35-6 



at 20 = 1-4660. 

 The cineol was determined by the resorcinol method in the oil boiling 

 below 178 . When calculated for the crude oil the result was 13 per cent. (See 

 also results with the oil of /:. dextropinea.) 



refractive index 

 refractive index 

 refractive index 



In the year 1907 the opportunity came for determining the oil of this 

 species from Northern New South Wales. The results of that investigation were 

 published by us in the Proc. Roy. Soc, N.S.W., Nov., 1911. 



Leaves and terminal branchlets for distillation were obtained from 

 Armidale in July, 1907, and from Uralla in the same month. The crude oil 

 in both instances was red in colour ; this being due to the action of the phenols 

 on the iron derived from the still, was easily removed by aqueous alkali. 

 The oil thus treated, after well washing and drying, was of a light lemon 

 colour, but when rectified was colourless. The crude oil had a turpentine-like 

 odour, this being more pronounced in the rectified oil. Phellandrene does 

 not occur in the oil of this species, so that in this respect it differs from the oil 

 of E. macrorhyncha. and the stearoptene eudesmol, although such a pronounced 

 constituent in the oil of E. macrorhyncha, was not found in that of E. Icevopinea. 

 Cineol was present to a small extent. The following table gives the general 

 results obtained with the crude oils, those previously recorded for this species 

 from Rylstone being given for comparison : — 



The trees of this species growing in the New England District of New 

 South Wales, thus gave an oil in agreement with that from Rylstone, although 

 the two localities are very far apart. 



