(Sm., in Bot. Nov. Holl., 42, and in Trans. Linn. Soc, iii, 285.) Brown Stringybark.

Systematic. - A large tree, bark fibrous, stringy, brownish. Abnormal leaves lanceolate, straight, pale-coloured; venation fine, oblique, parallel, distant, intramarginal vein removed from the edge, which is sometimes crenulate. Normal leaves shining, 3 to 6 inches long, oblique, lanceolate, falcate; venatior faintly marked, transverse veins oblique, parallel, distant, intramarginal vein removed from the edge. Peduncles axillary, with six to twelve sessile flowers. Calyx tube thick, with almost parallel sides, about 4 lines long, and 2 lines in diameter; operculum hemispherical, obtuse.

Fruit. - Sessile, compressed, globose; rim domed; valves slightly exserted; under 6 lines in diameter.

These compressed fruits at once determine the species both in herbarium and field. E. eugenioides, only in very exceptional cases, has sessile fruits which might be mistaken for those of this species.

Habitat. - Coast district and Dividing Range, New South Wales; South Australia: Victoria.

REMARKS. - The name "Brown Stringybark" is used comparatively in connection with the timber of E. macrorhyncha, F.v.M.. E eugenioides. Sieb.. and E. lævopinea, R.T.B.

ESSENTIAL OIL. - Leaves and terminal branchlets for distillation were obtained from Canterbury, N.S.W., in August, 1897. The yield of oil was 0.11 per cent. The crude oil was red in colour, and had a somewhat rank odour. Cineol was present, and phellandrene also detected, but that terpene was only present in small amount. Pinene was present in the dextro-rotatory form. The higher-boiling portion consisted largely of the sesquiterpene, but crystallised eudesmol was not detected. Esters were not pronounced.

The crude oil had specific gravity at 150 C. = 0.9175; rotation aD + 4.4°; refractive index at 200 + = 1.4771, and was soluble in 1 volume 80 per cent. alcohol. The saponification number for the esters and free acid was 4.3.

On rectification, 2 per cent, distilled below 1720 C. (corr.). Between 172-1750, 22 per cent, distilled; between 175-1930, 44 per cent, distilled; between 193-2690, 7 per cent, came over, and between 269-2770, 17 per cent, distilled. These fractions gave the following results: -

The cineol was determined by the phosphoric acid method in the portion distilling below 1930 C. The result was 38 per cent., indicating about 25 per cent, in the crude oil (O.M.).

The above sample was stored in the dark, and in December, 1919, was again analysed. Very- little alteration had taken place in the oil during the twenty-two years it had been kept, and evidently constituents prone to alteration are practically absent in the oil of this species. There was apparently no increase in cineol. 64 per cent, distilled below 1900 C. The crude oil and the rectified portion gave the following results: -

The cineol was determined by the resorcinol method in the rectified portion; when calculated for the crude oil the result was 32 per cent. By the rapid phosphoric acid method, the result was 26 per cent, when calculated for the crude oil.