(Cuthbert Hall, Proc. Linn. Soc, N.S.W., 1912, p. 568.)

Systematic. - A medium sized tree, 30 feet in height, with a smooth, greyish, rather dirty bark. Abnormal leaves lanceolate, petiolate, thin, usually alternate, sometimes acuminate. Normal leaves lanceolate, smaller than the abnormal, often 7 inches long, acuminate, falcate fairly thick; venation not very prominent, intramarginal vein not. far from the edge, lateral veins fairly distant, inclined at an angle of 45° or more to the mid-rib. Peduncle axillary, 3 lines long, with umbels of four to seven flowers. Buds on pedicels 1 to 2 lines in length; calyx tube turbinate, 1 1/2 lines long, about equal to the conoidal operculum. (Operculum much longer than the calyx tube. - C. Hall.)

Fruit. - Hemispherical; shortly pedicellate, more or less shining; rim convex; valves well exserted; 2 1/2 lines long and 3 lines in diameter.

At first glance they might be mistaken for E. dealbata, and then in similarity to E. resinifera, whilst perhaps the next nearest the flat-rim form of E. pumila.

Habitat. - New South Wales, from Milton to Mudgee and Singleton.

ESSENTIAL OIL. - Leaves and terminal branchlets of this species for distillation were received from Fairfield, N.S.W., in May, 1911. The yield of oil was 0.57 per cent. The crude oil was but little coloured and had an odour resembling those of the cineol-pinene oils generally. Pinene was detected, but phellandrene was absent. Cineol was present in great quantity, and if the yield was greater the oil of this species would be one of the best of the cineol group for commercial distillation. The rectified oil was yellowish in tint, as is common with those of this class. The odour of the aldehydes, valeralde-hyde and butaldehyde, was somewhat pronounced.

The crude oil had specific gravity at 150 C. = 0.9223; rotation aD + 2.7°; refractive index at 20° = 1.4629; and was soluble in 1 1/4 volumes 70 per cent, alcohol. The saponification number for the esters and free acid was 4.6. The amount distilling below 190° C. was 89 per cent. The cineol was determined by the resorcinol method in the rectified portion, and when calculated for the crude oil the result was 78 per cent. By the rapid phosphoric acid method it was 75 per cent. in the crude oil.