94 



edge, the lateral veins spreading. Umbels axillary, consisting usually of four 



ti eighl sessile flowers in the head; the common stalk being broadish and 



strongly compressed. The calyces sub-conical and exceeding the operculum, 

 which is conoid, the calyces sometimes angular. 



Fruit. Small, shining, bell-shaped; rim medium; 

 valves slightly exserted, and usually three 

 in number; about 2 lines long and 2 

 lines broad. 



Somewhat resembles those of E. camphora, but not 



quite so turbinate, and the valves are more exserted and 

 pointed than obtains in that species. 



Habitat. — This species has a very limited range, so far as is 

 known at present, having been found only in the 

 neighbourhood of Hill Top, about 70 miles south of 

 Sydney; Milton, and Mittagong, New South Wales. 



REMARKS. — The sessile fruits and abnormal leaves, as well as the timber and bark, differentiate this 

 species from E. Bridgesiana. R.T.B., and E. Bosistoana, F.v.M., and E. conica, D. & M., its nearest affinities. The 

 timber is pale-coloured, hard, and one of the best " White Box " timbers of New South Wales. Unfortunately, 

 as stated above, its distribution is limited. 



ESSENTIAL OIL. — Leaves and terminal branchlets for distillation were 

 obtained from Milton, New South Wales, in February, 1900. The yield of oil 

 was o-68 per cent. The crude oil was reddish-brown in colour, and had an odour 

 resembling those belonging to the cineol-pinene class of Eucalyptus oils generally. 

 The oil of this species may be considered to consist very largely of dextro-rotatory 

 pinene and cineol. Phellandrene was not present, and the esters small in amount. 

 The sesquiterpene was not at all pronounced. 



The crude oil had specific gravity at 15 C. = 0-9064 ; rotation a D + 10. y° ; 

 refractive index at 20 = 1-4625, and was soluble in 2 volumes 70 per cent, 

 alcohol. The saponification number for the esters and free acid was 4-9. 



On rectification 2 per cent, distilled below 162 C. (corr.). Between 

 162-183 , 91 per cent, distilled; and between 183-198 , 3 per cent, distilled. 

 These fractions gave the following results :— 



First fraction, sp. gr. at 15 C. = 0-9047; rotation a D + n-6°. 

 Second ,, ,, ,, = 0-9294; ,, not taken. 



The cineol, determined in the large fraction by the phosphoric acid 

 method, was 35 per cent., indicating about 32 per cent, in the crude oil (O.M.). 



The comparative absence of high boiling constituents in the oil of this 

 species is exceptionable for those of this class. 



The above sample of oil had been stored in the dark, and in September, 

 1919, was again analysed. Not much alteration had taken place during the 

 nineteen years it had been kept, except that the cineol had evidently increased 

 in amount. The crude oil and the fraction gave the following results :— 



Crude oil, sp. 



gr. 



at 15 C. 



io-6° ; refractive 



Fraction 



refractive 



0-9192 ; rotation a D + 

 index 20 = 1-4648. 

 0-9125 ; rotation « D + io-9 c 

 index at 20 = 1-4607. 

 The cineol was determined by the resorcinol method and calculated for 

 the crude oil; the result was 69 per cent. By the rapid phosphoric acid method 

 it was 54 per cent., when calculated for the crude oil. Terpineol was detected 

 in the rectified portion, 



