224 



On rectification, the usual amount of acid water and volatile aldehydes 

 came over below 165 C. (corn). Between 165-183, 39 per cent, distilled; 

 between 183-244, 17 per cent, came over, and between 244-270, 35 per cent, 

 distilled. These fractions gave the following results : 



First fraction, sp. gr. at 15 C. == 0-8964; rotation a u + 1-3. 

 Second ,, ,, =0-9102; - 2-3. 



Third ,, ,, = 0-9477; ,, not taken. 



The cineol, determined by the phosphoric acid method in the first fraction, 

 was 29 per cent., or about 14 per cent, in the crude oil (O.M.) 



This sample of oil had been kept in the dark, and in September, 1919, 

 18 years afterwards, was agaui analysed. Comparatively little alteration had 

 taken place during that time, although the specific gravity had increased, 

 and the rotation diminished a little. 42 per cent, distilled below 190 C. The 

 crude oil and the fraction below 190 gave the following results : - 



Crude oil, sp. gr. at 15 C. = 0-9328; rotation a D + 4'i; refractive index 



at 20 = 1-4869. 

 Fraction ,, ,, = 0-9020; rotation a u + 2-2; refractive index 



at 20 1-4684. 



The cineol, determined by the resorcinol method in the oil distilling below 

 190, and calculated for the crude oil, was 28 per cent. By the phosphoric acid 

 method it was 19 per cent. 



118. Eucalyptus Fletcher i. 



(R.T.B., Proc. Linn. Soc., N.S.W., 1901, p. 682, t. XIV.) 

 Lignum- vitae or Box. 



Systematic. A medium-sized tree, with a " Box ' bark on the trunk; 

 branches smooth, branchlets glaucous. Leaves from orbicular to ovate-acuminate 

 in shape, sometimes oblique, cuneate or rounded at the base, from i to 3 or 4 

 inches in width, thin, not shining; venation faintly marked, lateral veins oblique, 

 spreading, intramarginal vein removed from the edge, but more pronounced at 

 the base, giving a trinerved appearance to the leaf. Flowers numerous in axillary 

 or terminal panicles. Peduncles short, 2 to 3 lines long. Buds about 5 lines 

 long ; calyx tube conical, with scarcely any pedicel ; operculum hemispherical, very 

 shortly acuminate or obtuse. 



Fruit. Conical, tapering to a short pedicel ; rim 

 very thin and countersunk, mostly in 

 mature fruits with a notch ; valves inserted ; 

 about 4 lines long, and 3 lines broad. 



The fruits of E. conica are almost identical in shape 

 with these. 



Habitat. South Creek, St. Mary's (N. V. Fletcher); banks 

 of the Nepean River; Thirlmere, New South Wales ; 

 Gippsland Lakes Entrance, Heyfield, and Bruthea, 

 Victoria. 



