(J.H.M., Proc. Linn. Soc, N.S.W., 1904, p. 469.) (Syn. E. tereticornis Sm., var. linearis, R.T.B. & H.G.S., in Euc and their Ess. Oils, 1st Edit., 1902.)

Systematic. - Abnormal leaves linear, lanceolate, often over 6 inches long, from 3 to 6 lines broad. Flowers pedicellate, almost sessile in some cases. Calyx often angular; opercula, outer one early removed in the budding stage, inner and persistent one conical, acute to ellipsoid, obtuse or shortly acuminate.

Fruit. - Hemispherical; with a less domed rim than type, and a flange below the edge; valves opening from below the inner edge of the rim, and more divergent than in the type.

The fruits are exactly the same shape and size as the type, so that the best feature to distinguish it from its congeners is the bullet-shaped operculum.

Habitat. - Coast districts, New South Wales, and Queensland.

REMARKS. - This variety was founded originally on the distinguishing characters of its abnormal leaves and operculum, timber and oil constituents. The flowers are shortly pedicellate, and the calyx often angled at the base. Being our own variety, it was our intention, as stated by us, to give it specific rank later, but Mr. Maiden, Linn. Soc. N.S.W., Vol. 29, 1904, states when describing E. Seeana that presumably this is E. teriticornis, Sm. var. linearis, Baker and Smith. It certainly is.

ESSENTIAL OIL. - Leaves and terminal branchlets for distillation were obtained from Woodburn, New South Wales, in August, 1900. The yield of oil was 078 per cent. The crude oil was red in colour, and had an odour resembling those of the cineol-pinene class. The oil was rich in cineol, contained some pinene, but phellandrene was absent. The amount of high boiling constituents was small, and consequently the specific gravity of the rectified oil was not high enough to meet the requirements of the standard as fixed by the British Pharmacopoeia.

The crude oil had specific gravity at 150 C. = 0.91; rotation aD + 5.6°; refractive index at 200 = 1.4649, and was soluble in 1 1/4 volumes 70 per cent. alcohol. The saponification number for the esters and free acid was 5.5 per cent.

On rectification 2 per cent. distilled below 1650 C. (corr.). Between 165-1830, 88 per cent, distilled; between 183-2430, 8 per cent, distilled. These fractions gave the following results: -

The cineoi determined by the phosphonc acid metnod in the large traction was 57 per cent. (O.M.), indicating about 52 per cent, in the crude oil.

The above sample of oil had been stored in the dark, and in September, 1919, was again analysed. It had become much heavier during that time, but on rectification 80 per cent, came over below 190°. This fraction appeared to consist very largely of cineol, suggesting an increase of cineol in the oil during the nineteen years it had been kept. The crude oil and the large fraction gave the following results: -

The cineol was determined by the resorcinol method in the portion distilling below 1900; when calculated for the crude oil, the result was 76 per cent. By the rapid phosphoric acid method it was 58 per cent, when calculated for the crude oil.