[8 3 



crude oil was evidently due to the aromadendral, although the pinene was also 

 laevo-rotator) to a small extent • phellandrene was absent. This lefl rotation is 

 unusual with oilsoi this class, as in mosl cases the pinene shows a predominant 

 dextro rotation. The cineol content was onlj fair, and the oil did not contain 

 constituents having special characters ■ the heref ore, little valu< 



.mi oil-producing tree. 



rhe crude oil had specific gravitj a1 15 < . 0*9108; rotation a 

 ;■_■ ; refractive index a1 zo r -4659, and was soluble in 7 volumes ~>> per cent. 

 alcohol. The saponification number foi the * i and fret acid was 5-6. 



On rectification, a few drops of acid water, together with some aldehydes, 

 came over below r.67 (corr.). Between [67 172°, 9 per cenl distilled; between 

 172 198°, 75 per cent, came over, and between [98 270 , 11 percent, distilled. 

 These fractions gave the following results : 



First fraction, sp. gr. at 15" 1'. = 0-8909; rotation a - 2-6°; refractive 



index at 20° = I\*J.6l2. 



Second ,, ,, ,, = 0-9065; rotation a, - 3-0°; refractive 



lllde\ al 20° = 1-4628. 



Third ,, ,, ,, = 0-9296; rotation a D -3-3°; refractive 



index at 20 = 1-4827. 



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

 and calculated for the crude oil; the result was 50 per cent. By the phosphoric 

 acid method it was 43 per cent, when calculated for the crude oil. 



The rectified oil was tinged yellow, a peculiarity common with the oils of 

 this group. This colour is traceable to quinone influence, derived from the 

 phenol preseni in the oils of certain groups of the cineol class, but is not shown 

 by the oils from the " Peppermints" or the "Ashes." 



The results obtained with the oil of this species were published by us in 

 the Trans. Roy. Soc, South Australia, 1916. 



96. Eucalyptus strict a. 



(Sieli. in DC. Prod., iii, 28, Mem. Myrt, t. 8.) 



Systematic. A shrubby species with linear-lanceolate, shining leaves, of 

 a leathery texture and the veins scarcely visible, but upon removing the cuticle 

 the exposed venation resembles that of the group to which /•,'. Smithii (R.T.B.) 

 belongs. Peduncles short axillary, with live to eight rather small Mowers in the 

 umbel. 1 Calyx small, under 2 lines in diameter, graduall] tapering into a thick 

 pedicel; operculum hemispherical, shortly acuminate. 



Fruit. Oblong, shining, contracted .it die thin 

 rim; capsule sunk; valves not exserted- 



under (i line-, long. 



Great • are is required >!■ 1 to confound these •• ith thost- 

 oj \.. obi usiflora and E. apiculata. 



Habitai. Blue Mountains and Clyde District, New South 

 WaL 



