(H.D. & J.H.M., Proc. Linn. Soc., N.S.W., 1899, p. 456, t. XL.) Candle Bark.

Systematic. - A tall tree with a smooth bark falling off in ribbons. Abnormal leaves from nearly orbicular to nearly oblong, often emarginate or refuse, opposite, sometimes stem-clasping and even more or less connate, very glaucous in general. Normal leaves dull green on both sides, narrow lanceolate, of thickish texture; the intramarginal vein scarcely removed from the edge, the laterial veins roughly transverse; often glaucous, sometimes very much so. Buds ovoid, axillary, in threes and cruciform, sessile, or with very short stalklets; the stalks commonly under 1/4 inch long, round, rarely flattened; operculum nearly hemispherical when ripe, hardly pointed, rather shorter than the calyx, conoid when less ripe.

Fruit. - Top-shaped or ovate, spreading at the orifice, sometimes nearly hemispherical, shiny or glaucous; rim broadish and convex; valves three or four, and exserted; usually about 2 to 3 or 3 to 4 lines in diameter.

It is not unlike some forms of E. Stuartiana, var. lanceolata.

Habitat. - New South Wales, Berrima, to the high tableland of the Monaro from Braidwood to Victoria.

127 Eucalyptus rubida 198

REMARKS. - This is the tree that the late Dr. Woolls, in his Flora of Australia, confounded with E. diversicolor, Desf., owing, no doubt, to the variation in the form of its foliage.

ESSENTIAL OIL. - As this species has an extensive range, it was thought desirable to obtain material for distillation from several localities in order to test the constancy of results. Leaves and terminal branchlets were obtained from the following localities in New South Wales: - (1) Bungendore, June, 1898; (2) Bungendore, March, 1899; (3) Wingello, October, 1900; and (4) Cooma, November, 1913. All the material consisted of mature lanceolate leaves. The oil of this species consisted principally of pinene, phellandrene, cineol, and the sesquiterpene. Esters as a rule were not pronounced. Phellandrene was only present in small amount, being rather more abundant in the Cooma material. All the samples were insoluble in 10 volumes 80 per cent. alcohol. The general results obtained with the several oils are recorded in the following table: -

Yield of oil per cent.

Specific gravity at 15° C.

Rotation

Saponification number.

Cincol, per cent.

(1)

Bungendore, 6/1898 ......

0.11

0.9209

+ 4.4°

6.2

15-20

(2)

" 3/1899 ......

0.09

0.9137

+ 2.2°

12.3

15-20

(3)

Wingello, 10/1900 ........

0.01

0.9067

+ 3.3°

3.2

10-15

(4)

Cooma, 11/1913 ......

0.08

0.9180

- 1.1°

5.8

10-15