(H.I), & J.H.M., Proc. Linn. Soc, N.S.W., 1899, p. 612, t. XLVIII, fig. 1-3.)

A Box

Systematic. - A tree of medium size, with pendulous branches. Bark of the ordinary "Box" character, persistent right on to the small branches. Abnormal leaves pale green, not glaucous, broadly ovate; the intramarginal vein considerably distant from the margin, and with the midrib giving the leaf a triplinerved appearance. Normal leaves lanceolate, ultimately narrow-lanceolate, 4 inches long by 1/2 inch broad, varying, however, in length and width; the intramarginal vein is distinctly removed from the edge of the leaf, although this is less marked in the case of narrow leaves, the venation is oblique, but few of these secondary veins are as prominent as the intramarginal vein. The foliage is drooping, and has frequently long stalks. Buds clavate, the calyx tube greatly exceeding the operculum in size; operculum nearly hemispherical, with a small umbo; the calyx tube tapering gradually to the common point of attachment to the stalk.

Fruit. - Narrow, conical (hence the specific name), tapering to the point of attachment of the common stalk; rim thin; the valves, which are three or four and very small, are deeply sunk; the greatest length 3 lines by 2 lines broad.

Requires care so as not to confound them with E. Flctcheri or perhaps E. crebra.

Habitat. - Found in the country west of the Dividing Range and its spurs, forming, with E. hemiphloia and E. Woollsiana, the "Box" of the western country, New South Wales.

REMARKS. - Since the original description appeared under the Author's names (loc. cil.), the species has been lowered to varietal rank by Maiden, "Critical Revision" vol. ii, p. 123. under E. Baueriana, Schau., a species founded on leaves and inflorescence only, "in plump bud and expanded flower," J.H.M. loc. cit.' and of tropical origin Benth.. B.F1. iii. 214. Such material and description is of no practical value these times. As Deane and Maiden accurately describe this tree from material and known locality, it is thus very clear what Eucalyptus is meant, and so we prefer to retain their nomenclature for then there can be no doubt about the basis upon which the botany and chemistry of this work is founded.

ESSENTIAL OIL. - Leaves and terminal branchlets for distillation were obtained from Parkes, New South Wales, in July, 1900. The yield of oil was 0.59 per cent. The crude oil was of an orange-brown colour, and had a pronounced odour of volatile aldehydes. Pinene was present in some quantity, and there was also a fair amount of cineol; but phellandrene was not detected, and esters only in small amount. It may be that aromadendral was present in small quantity. The higher boiling portion contained the sesquiterpene.

The crude oil had specific gravity at 150 C. = 0.9057; rotation aD + 5.24°; refractive index at 200 = 1.4676, and was soluble in 6 volumes 70 per cent. alcohol. The saponification number was 6.26.

On rectification, 2 per cent. distilled below 162° C. (corr.). Between 162-1830, 87 per cent. distilled; between 183-2550, 6 per cent, distilled. These fractions gave the following results: -

The cineol, determined by the phosphoric acid method in the large traction, was 40 per cent., indicating about 35 per cent. in the original oil (O.M.).

This sample had been stored in the dark, and in July, 1919,' was again analysed, when 84 per cent, distilled below 1900 C. The crude oil and the fraction gave the following results: -

The cineol was determined by the resorcinol method in the redistilled portion and calculated for the crude oil; the result was 70 per cent. By the rapid phosphoric acid method it was 48 per cent. when calculated for the crude oil, thus showing the presence of constituents other than cineol, which were absorbed by the resorcinol. Terpineol was detected in the rectified portion.