125 



The crude oil had specific gravity at 15 C. = 0-9038 ; rotation a D + 11-3 ; 

 refractive index at 20 C. = 1-4642; and was soluble in i volume 80 per cent, 

 alcohol, but not in 10 volumes 70 per cent. 



On rectification, a small quantity of acid water, and rather a large amount 

 of objectionable smelling aldehydes, came over below 167 C. (corr.). Between 

 167-172, 32 per cent, distilled; and between 172-194, 63 per cent, came 

 over. These fractions, gave the following results : 



First fraction, sp. gr. at 15 C. = 0-8967 ; rotation a + 16-7; refractive 



index at 20 = 1-4630. 



Second ,, ,, = 0-9086; rotation D + 9-4; refractive 



index at 20 = 1-4631. 



The cineol was determined by the resorcinol method in the portion 

 distilling below 194; when calculated for the crude oil, the result was 59 per 

 cent. By the rapid phosphoric acid method, it was 52 per cent, in the 

 crude oil. 



The saponification number for the esters and free acid was 5-9. 



The oil of this species and that of E. Muelleri are very closely related, 

 in fact, almost identical in composition, which may be seen by referring to the 

 results tabulated under that species. 



The results of this investigation were published by us in the Proc. Roy. 

 Soc., Tasmania, October, 1912. 



65. Eucalyptus urnigera. 



(Hook., f. in Lond. Jour. Bot., VI, 477, 1847.) 

 Urn Gum. 



Systematic. A tree varying greatly in size, usually found at an altitude 

 between 2,000 or 3,000 feet. Bark smooth, usually blotched with red or brown 

 (Rodway). Abnormal leaves opposite or alternate, rounded, oval to ovate, 

 crenulate, petiplate. or sessile, often cordate, branchlets and foliage often glaucous. 

 Normal leaves oval or ovate-lanceolate to lanceolate, older leaves often thick and 

 shining; venation very indistinct. Flowers pedicellate., the common peduncle 

 axillary, about .5 lines in length. Buds glaucous, about 5 lines long. Calyx 

 tube expanded from the pedicel, then contracted and enlarged again at the rim; 

 operculum about i line long, somewhat acuminate. 



Fruit. Urn-shaped, contracted below the orifice; 

 rim truncate, broad ; valves deeply inserted ; 

 about ,7 lines long and up to 5 lines broad. 



These are uncommonly like thosi of the " Bloodvoods," 

 . the nearest being E. corymbosa. 



Habitat. Confined to Tasmania. 



ESSENTIAL OIL. Material for distillation was obtained at Mount 

 Wellington, Tasmania, at an altitude of about 2,500 feet. It was collected in 

 July, 1908; and this being the depth of winter, the yield was probably less 

 than if collected in the summer, as this species most likely follows the general 



