22() 



greyish on both sides ; veins not prominent, lateral ones oblique, the intra- 

 marginal vein removed from the edge. Flowers mostly in umbels, forming 

 terminal panicles. Calyx tube tapering into a short, angled pedicel; operculum 

 conical, and as long as the calyx tube. 



Fruit. Petiolate or sessile, cylindrical or urn- 

 shaped ; rim thin ; valves quite enclosed ; 

 3 to 4 lines long and 2 lines in diameter. 



The nearest in shape to this fruit is that of E. coryno- 



calyx. 



Habitat. Distributed throughout the whole coastal area, and 

 well into the tableland of New South Wales; South 

 Australia ; Victoria ; 'Queensland. 



REMARKS. E. hcmiphlulu is the common " Box " of the Coast and Dividing Range, and is distinct from 

 any of the " Box " trees of the interior. The timber is pale-coloured, hard, but not highly valued. This tree can 

 be distinguished from E . albcns by its smaller fruit and smaller leaves, and an absence of glaucousness on its branchlets, 

 leaves, and buds. The fruits are characteristic, and differentiate it from E. conica, H.D. & J.H.M., and E. \Voollsiana, 

 R.T.B. 



ESSENTIAL OIL. Leaves and 'terminal branchlets for. distillation were 

 obtained from Belmore, N.S.W., in September, 1900. The yield of oil was 0-58 

 per cent. The crude oil was reddish-brown in colour, and had a somewhat rank 

 odour, with a secondary one of aromadendral. It contained some pinene, but 

 phellanclrene was absent at this time of the year. Cineol was present, but only 

 about 15 per cent, in the crude oil. Aromadendral occurs in quantity, and it 

 was from this oil that the pure substance was first prepared for research. 

 The esters were not pronounced. Little difference in the constitution of the oils 

 from this species, E. albcns, and E. Woollsiana was observed. 



The crude oil had specific gravity at 15 C. = 0-9117 ; rotation a n 6-85 ; 

 refractive index at 20 1-4853, and was soluble in 2 volumes 70 per cent, 

 alcohol. The saponification number for the esters and free acid was 5-8. 



On rectification, 2 per cent, distilled below 168 C. (corr.). Between 168- 

 183, 73 per cent, distilled ; between 183-214, 13 per cent, came over, and between 

 214-230, 6 per cent, distilled. These fractions gave the following results:- 

 First fraction, sp. gr. at 15 C. == 0-9041 ; rotation D - 3-2. 

 Second ,, ,, =0-9122; ,, -10-3. 



Third ,, ,, =0-9424; ,, 24-9. 



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

 was 24 per cent., indicating about 18 per cent, in the crude oil (O.M.). 



Material had previously been obtained from Emu Plains, N.S.W., in 

 September, 1899 ; the oil was practically indentical with the above. It was, in 

 fact, after the investigation of this sample that it was decided to obtain 

 sufficient oil of this species for the preparation of aromadendral, in order that 

 its chemistry might be determined. 



The above samples were mixed together and stored in the dark, and in 

 September, 1919, the oil was again analysed. Not much alteration had taken 

 place in the oil during the nineteen years it had been kept, except that it had 

 perhaps increased a little 'n cineol. 74 per cent, distilled below 190 C. The 

 crude oil and the rectified portion gave the following results : 



Crude oil, sp. gr. at 15 C. -- 0-9166; rotation a D - - 5-5; refractive index 



at 20 = 1-4859. 



Rectified portion ,, = 0-8933 ; rotation a n - - 7-5 ; refractive index 



at 20 = 1-4796. 



