On rectification a few drops of acid water with some aldehydes came over 

 below 163 C. (corr.). Between 163-167, 32 per cent, distilled ; between 167-198, 

 53 per cent, came over ; the temperature then rose to 245, and between 245-272, 

 10 per cent, distilled. These fractions gave the following results : 



First fraction, sp. gr. at 15 C. :; 0-8854; rotation D + 24-5; refractive 



index at 20 = 1-4629. 

 Second ,, : 0-9022; rotation D + 14-1; refractive 



index at 20 = 1-4625. 

 Third ,, ,, ,, =0-9289; rotation not taken; refractive 



index at 20 = 1-4920. 



The cineol was determined by the resorcinol method in the portion dis- 

 tilling below 198 ; when calculated for the crude oil the result was 42 per cent. 



The oil belongs to the pinene-cineol class, and does not contain constituents 

 of a special character. The species is thus of little value as an oil-producing 

 tree, particularly as others are available from which a superior oil can be 

 obtained. 



The chemical resemblance between this species and E. leucoxylon, shown 

 by the formation of the red colouration of the leaves when steam-distilled, is 

 further exemplified with their oils, which are in close chemical agreement. 



99. Eucalyptus polybractea. 



(R.T.B., Proc. Linn. Soc., N.S.W., 1900, p. 692.) 

 Blue Mallee. 



Systematic. A glaucous shrub, with quadrangular branchlets. Leaves 

 lanceolate (those on the early shoots lanceolate to oblanceolate), erect, rarely 

 falcate, not oblique, narrow, under 6 lines broad, mostly 3 inches long, acuminate, 

 often with a recurved point, not shining ; mid-rib raised on the under side, 

 giving the leaf a strong resemblance to that of an Olea, intramarginal vein 

 removed from the edge, lateral veins oblique, spreading, finely marked, only 

 occasionally distinctly pronounced ; petiole about 3 lines long. Peduncles 

 axillary, short, 2 to 3 lines long, angled, with from eight to twelve flowers. Buds 

 angular, i to i| lines long, glaucous in the early stages of development, surrounded 

 by numerous acuminate glabrous, ribbed, whitish bracts. Calyx conical, tapering 

 into an exceedingly short pedicel ; operculum obtuse, or only very slightly 

 acuminate, hemispherical. 



Fruit. Hemispherical to pear-shaped, glaucous; 

 rim thin, slightly contracted ; valves 

 deeply set, not exserted ; 2 lines in 

 diameter. 



The fruits of E. Woollsiana and E. viridis are un- 

 commonly like those of this species, so care is required 

 in separating them. 



Habitat. Wyalong and large areas west of that district, New 

 South Wales ; also Bendigo district, north of Victoria, 



