(Hook., f. in Lond. Jour. Bot., vi, 478, 1847.)

Systematic. - A bushy shrub or small tree, from 4 to 20 feet high. Bark smooth, dark red-brown, rough. Leaves alternate or opposite, oval, ovate or almost orbicular, crowded, thick, coriaceous, shining, obtuse or mucronate, shortly petiolate, mostly under 1 inch long; venation not prominent, lateral veins fairly transverse. The closely arranged leaf scars on the branchlets are very conspicuous. Flowers sessile, from one to three, on very short axillary, angular peduncles. Calyx tube thick, conical, often ribbed, 2 to 3 lines long; operculum shorter, acuminate.

Fruit. - Semi-ovoid or expanded slightly at the orifice; rim convex; valves not ex-serted or only slightly so; 3 lines long and almost 3 lines in diameter.

Habitat. - Confined to high elevations in Tasmania.

REMARKS.- - Rodway suggests in his "Flora of Tasmania" (p. 58), that it is just possible that this species is a mountain form of E. Muelleri. but we are of opinion that technology at least, from a forestry or timber point of view, would be better served if the two were recognised as distinct - vide note under that species. "This Eucalypt has the same form of leaves throughout its life history, which E. Muelleri does not appear to have." - L. G. Irby.

ESSENTIAL OIL.- Material for distillation was obtained on the Hartz Mountains, Tasmania, in May, 1912, and reached Sydney in excellent condition. The yield of oil was 0.8 per cent. The crude oil was but little coloured, and was rich in cineol. It contained, however, rather a large amount of dextro-rotatory pinene, consequently the specific gravity was somewhat low; this result was also influenced by the remarkable freedom from high-boiling constituents, and no less than 96 per cent. of the crude oil distilled below 194° C. The terpene phellandrene was absent in the oil of this species.

The crude oil had specific gravity at 150 C. = 0.9038; rotation aD + 11.3°; refractive index at 200 C. = 1.4642; and was soluble in 1 volume 80 per cent, alcohol, but not in 10 volumes 70 per cent.

On rectification, a small quantity of acid water, and rather a large amount of objectionable smelling aldehydes, came over below 167° C. (corr.). Between 167-172°, 32 per cent, distilled; and between 172-194°, 63 per cent, came over. These fractions, gave the following results: -

The cineol was determined by the resorcmol method in the portion distilling below 194°; when calculated for the crude oil, the result was 59 per cent. By the rapid phosphoric acid method, it was 52 per cent, in the crude oil.

The saponification number for the esters and free acid was 5.9.

The oil of this species and that of E. Muelleri are very closely related, in fact, almost identical in composition, which may be seen by referring to the results tabulated under that species.

The results of this investigation were published by us in the Proc. Roy. Soc, Tasmania, October, 1912.