[8g 



On rectification .1 lew drops ol acid watei with some aldehydes came ovei 

 below [63 I '"M. . Between [63 r.67 . [2 per cent, distilled ; between 167-198 , 

 g j per cent, came ovei ; the temperature then rose to 245 . and between 245 272 . 

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



First fraction, sp. gr .it 13 C. = 0-8854; rotation a B + 24-5°; refractive 



index al 20° = ]• ;<■•', 

 Second .. ,, .. = 0-902 _> , rotation «„ + 1 pi ; refractivi 



index ,11 20 = 1-4625. 

 Third ,, ,, .. = 0-9289; rotation nol taken ^"refractive 



index at 20° = 1-41)20. 

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

 tilling below [98 . when calculated for the nude oil the resull was \i per cent. 



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

 of a special character. The species 1- thus oi little value as an oil-producing 

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

 obtained. 



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

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

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



99. Eucalyptus polybractea. 



(R.T.B., Proc. Linn. Soc, N.S.W., [900, 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 Oka, intramarginal vein 

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



isionally distinctly pronounced; petiole about 3 lines long. Peduncles 



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

 angular, 1 to i 1 , lines long, glaucous in the early stages of development, surrounded 

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

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

 acuminate, hemispherical. 



Fruit. Hemispherical to pear-shaped, glaucous; 

 11111 thin, slightly contracted ; valves 



deeplj set, nol exserted ; 2 lines in 

 diameti 1 



The fruits oj E Woollsiana and E. \ui«li> are un- 

 commonly like those 0/ this species, so care is twinned 

 in separating them. 



Habitat. Wyalong and lai 1 areas west "i ihat district, New 

 South Wales; also I'" ndigo distrii 1 , 1101 th of Vi< toria, 



