(R.T.B. & H.G.S., in Euc. and their Ess Oils, 1st Ed., 1902, p. 124.)

Systematic. - A typical forest tree, with a smooth bark. Leaves lanceolate, 4 to 6 inches long or more, rarely above 1 inch broad, thin, almost membraneous, not shining, dull green colour on both sides, occasionally drying brownish; petiole slender, over 1 inch in length; venation finely defined, lateral veins oblique, spreading, the distant ones being more distinct, intramarginal vein removed from the edge. Inflorescence in axillary or terminal panicles; pedicels about 3 lines long, slender. Calyx conical, 2 lines in diameter, operculum hemispherical, shortly acuminate.

Fruit. - Conical; rim thin, contracted, sometimes lacerated, valves deeply inserted; about 2 lines or slightly more in diameter.

In general shape they resemble E. conica, E Flctcheri and E polyanthemos, but are larger.

Habitat. - Camboon, Rylstone, Hargraves, Wellington, New South Wales.

REMARKS. This variety is placed with E. ovalifolia on account of a resemblance in the morphological characters of the fruits (partly) and buds, as well as the bark and nature of the timber. The trees of the two (the type and variety) are quite different in the field, and timber-getters and settlers never confound them. The constant shape of the leaves and the pyriform fruits and chemical constituents are the principal features of difference between it and the type.

ESSENTIAL OIL. - Leaves and terminal branchlets for distillation were obtained from Camboon, N.S.W., in March, 1901. The yield of oil was 0.58 per cent. The crude oil was of a light amber colour, and had an odour resembling those belonging to the cineol-pinene class of Eucalyptus oils. Pinene and phellan-drene were both present, and also a good quantity of cineol. It is unusual for an oil containing so much phellandrene to be so rich in cineol, particularly as the terpene in the richer cineol oils is generally pinene. The higher boiling portion contained the sesquiterpene. The lævo-rotation of the oil was largely due to the presence of phellandrene; the amount of esters was not large.

The crude oil had specific gravity at 150 C. = 0.9083; rotation aD - 4.26°; refractive index at 200 = 1.4654, and was soluble in 2 volumes 70 per cent, alcohol. The saponification number for the esters and free acid was 3.8.

On rectification 1 per cent, distilled below 1570 C. (corr.). Between 157-1880, 92 per cent, distilled, and between 188-2500, 3 per cent, distilled. These fractions gave the following results: -

The cineol, determined by the phosphoric acid method in the large fraction, was 48 per cent. (O.M.), indicating about 45 per cent, in the crude oil.

The oil from this variety differs from that of E. ovalifolia itself in containing more pinene and much more cineol.

This sample had been stored in the dark, and in September, 1919, was again analysed. The lævo-rotation had diminished, and the cineol increased a little in amount. 90 per cent, distilled below 1900 C. The crude oil and the rectified portion gave the following results: -

The cineol was determined by the resorcine method in the rectified portion; when calculated for the crude oil the result was 67 per cent. By the rapid phosphoric acid method, it was 56 per cent, when calculated for the crude oil.