7' 



long, channelled above. Oil glands quite obscured. Umbels axillary, peduncle 

 flattened, about i inch long, bearing mostly seven flowers. Calyx pyriform, 

 angular, pedicel short, 2 to 3 lines long ; operculum rather larger than the calyx, 

 hemispherical, either shortly acuminate or rostrate. 



Fruit. Hemispherical to turbinate, angular at the 

 base ; valves prominently exserted ; rim up 

 to i lines broad; 8 lines in diameter, and 

 9 lines in length. 



Tilt' fruits arc characteristic, the /It// rim liaring the 

 appearance (if protruding from the capsule /or nearly 

 %ofan inch. Jiusilv determined liv the figure here gi \ 



Habitat.- Manly ; South Const district of New South Wales. 



REMARKS.- -The tree, as stated above, was placed by Bcntham (loc. cit.) as a variety of E. resiiiifera 

 of Smith, and although the venation ami the shape of the leaves of the two trees resemble each other, the fruits 

 and timber arc' distinct and quite constant, and it is on these characters that the species w.is separated from 

 Ji. resinifera. Sin. 



ESSENTIAL OIL. Leaves and terminal branchlets for distillation were 

 obtained from Currawang Creek, N.S.W., in July, 1898. The yield of oil was 

 0-37 per cent. The crude oil was of a reddish-brown colour, and had an odour 

 resembling the pinene-cineol oils generally. Volatile aldehydes were pronounced, 

 in which valeraldehyde occurred. Pinene was the chief terpene, and phellandrene 

 was absent. Cineol was present in some quantity, and esters also. The higher 

 boiling portion consisted largely of the sesquiterpene. 



The crude oil had specific gravity at 15 C. = 0-9282 ; rotation + 7-09, 

 refractive index at 20 = 1-4678, and was soluble in ij volumes 70 per cent, 

 alcohol. The saponification number for the esters and free acid was 24-4 per 

 cent 



On rectification, 2 per cent, distilled below 169 C. (corr.). Between 

 169-183, 78 per cent, distilled; between 183-245, 10 per cent, came over; and 

 between 245-262, 4 per cent, distilled. These fractions gave the following 

 results : 



First fraction, sp. gr. at 15 C. := 0-9122; rotation a n + 6-82. 



Second ,, ,, ,, = 0-9252; ,, not taken. 



Third , = 0-9342; 



The cineol was determined by the phosphoric acid method in the first 

 fraction; 43 per cent, of that constituent was present, indicating about 35 

 per cent, in the original oil (O.M.). 



The above sample had been stored in the dark, and in August, 1919, 

 twenty-one years afterwards, was again analysed. It had increased in cineol 

 content to quite a considerable extent. The physical characters are also in 

 agreement with that result. The crude oil and the rectified portion gave the 

 following results. 86 per cent, distilled below 190 C. : 



Crude oil, sp. gr. at 15 C. = 0-9334 ; rotation a + 6-7; refractive index at 



20 = 1-4646. 

 Fraction ,, ,, = 0-9162 ; rotation a D + 5-7 ; refractive index at 



20 : 1-4599- 



The cineol was determined by the resorcinol method and calculated for 

 the crude oil ; the result was 72 per cent. By the rapid phosphoric acid method 

 it was 50 per cent, when calculated for the crude oil. 



