152 



The crude oil had specific gravity at 15° C. = 0-9097; rotation a t> + 6-i°; 

 re tractive index at 20 = 1-4636, and was soluble in ij- volumes 70 per cent, 

 alcohol. I'l u ■ saponification number for the esters and free acid was 8-i. 



On rectification, 5 per cent, distilled below 167 C. (corr.). Between 

 167-188°, 90 per cent, distilled. The large fraction had specific gravity at 

 15 ' C. = 0-9095; and rotation g B + 6-55°. The cineol, determined by the 

 phosphoric acid method in the redistilled portion, and calculated for the crude 

 oil, was 59 per cent. (O.M.). 



Later a further consignment of material ior distillation was obtained from 

 the same district , but from another locality ; the oil was found to be practically 

 identical in composition with the first sample, although the specific gravity was 

 a little higher. The yield of oil was i-6 per cent. The specific gravity of the 

 crude oil = 0-0164; and the optical rotation a D + 3-76°. The cineol, determined 

 by the phosphoric acid method in the crude oil, was 63 per cent. (O.M.). It 

 is thus seen that during the greater portion of the year the oil from this species 

 would more than meet the requirement for specific gravity as laid down in the 

 British Pharmacopoeia. 



The above samples were mixed together and stored in the dark, and in 

 September, 1919, the oil was again analysed. 92 per cent, distilled below 190° C. 

 The crude oil and the fractionated portion gave the following results : — 



Crude oil, sp. gr. at 15 C. — 0-9280; rotation a D + 5-0°; refractive 



index at 20 = 1-4616. 

 Redistilled portion ,, — 0-9196; rotation + 4 - 6°; refractive index at 



20 = 1-4596. 

 The cineol was determined by the resorcinol method in the fractionated 

 portion and calculated for the crude oil ; the result was 80 per cent. By the rapid 

 phosphoric acid method it was 64 per cent., when calculated for the original oil. 



81. Eucalyptus Mooreu 



(J.H.M. & R.H.C., Proc. Linn. Soc, N.S.W., 1905, p. 191.) 



Systematic. — An erect, rather slender shrub up to 12 feet in height, forming 

 dense clumps of small area ; bark smooth, with the outer bark peeling off in 

 ribbons. Abnormal leaves narrow, lanceolate, glaucous, oil glands profuse. 

 Normal leaves narrow, very thick, smooth ; venation scarcely showing, both sides 

 shining, tips often hooked. Peduncles axillary, short, up to 2 lines long, bearing 

 stellate clusters of buds. Flowers in dense heads numbering ten or more, some- 

 times flowering while in opposite leaf stage. Calyx narrow, turbinate, angular, 

 about 1^ lines long ; operculum angular, pointed, about the same length as the 

 calyx tube, often reddish. 



Fruit.— Globular, shining, smooth or somewhat 

 rugose ; rim narrow, countersunk ; valves 

 not exserted ; about 2 lines long and 2 

 lines in diameter. 



These fruits are similar in shape to those of E. stellulata. 



Habitat. — On the highest portion of the Blue Mountain 

 Tableland. Talwong in the Shoalhaven district is the 

 southernmost locality, New South Wales. 



