The above sample had been stored in the dark, and in August, 1919, was 

 again analysed. Not much alteration had taken place during the twenty-two 

 years it had been kept, although the cineol had increased somewhat. 82 per 

 cent, distilled below 190 C. The crude oil and the rectified portion gave the 

 following results : 



Crude oil, sp. gr. at 15 C. = 0-9258; rotation a D + 1-2; refractive 



index at 20 = 1-4675. 

 Redistilled portion ,, = 0-9180; rotation a D + 3 - 6; refractive 



index at 20 = 1-4612. 



The cineol was determined by the resorcinol method in the rectified portion, 

 and calculated for the crude oil; the result was 71 per cent. By the rapid 

 phosphoric acid method, it was 61 per cent, when calculated for the crude oil. 



52, Eucalyptus Behriana. 



(F.v.M., in Trans. Viet. Inst., i, 34, 1834.) 



Systematic. A small tree of the " Mallee " country. Branchlets terete. 

 Bark thin, smooth, greenish, hard. Leaves ovate, ovate-lanceolate, oval, 

 acuminate, or shortly acuminate, smooth, coriaceous, more or less shining, 

 2 to 3 inches long; venation fairly prominent, lateral veins very oblique, 

 distant, spreading, intramarginal vein removed from the edge. Flowers in 

 rather lengthened, terminal panicles. Peduncles short, 3 to 4 lines long, 

 angled; seven or fewer flowers on the umbel. Flowers sessile, calyx angular, 

 almost cylindrical, under 2 lines long; inner operculum hemispherical, shortly 

 acuminate, outer one very small, membraneous and persistent. 



Fruit. ^Small, shining, top-shaped, slightly hemi- 

 spherical, truncate; rim comparatively 

 thick, sunk ; valves enclosed ; under 2 lines 

 in diameter. 



In shape they resemble E. odorata, but are much 



smaller and shining. ^v /"^ 



Habitat. Interior of New South Wales; South Australia; 

 Victoria. 



REMARKS. -This sp3cies is easy of determination, both in the field and the herbarium. The bark is 

 very characteristic, being smooth, firm, and very hard, and difficult to remove, even after the timber is cut. The 

 leaves have somewhat the resemblance of " Mallee Box," E. Woollsiana, R.T.B., from which species it differs in 

 having a smooth bark, its inflorescencs, timber, and chemical constituents. It is a strong species and 

 Mueller's figure of it in the " Eucalyptographia " is very good. 



ESSENTIAL OIL. Leaves and terminal branchlets for distillation were 

 obtained from Wyalong, N.S.W., in December, 1900. The yield of oil was 0-62 

 per cent. The crude oil was of a reddish-brown colour, and had an odour 

 resembling those of the cineol-pinene class of Eucalyptus oils. It was fairly 

 rich in cineol; pinene was present, but phellandrene could not be detected. 

 It is doubtful if the aldehyde aromadendral occurs, as the rotation of the crude 

 oil and of the higher boiling portion was more highly dextro-rotatory than was 

 that of the first fraction. It is probable that a constituent exists in this oil, 

 similar to that in E. Rossii and other species. The specific gravity of the oil 

 was high, but it was less rich in cineol than those from such " Malices " as E. 

 polybradea and E. oleosa. The third fraction contained the sesquiterpene. 



50068 H 



