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

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

 angular, pedicel short, 2 to 3 lines long ; operculum rathei largei than the calyx, 

 hemispherical, eithei shorty acuminate or rostrate. 



Fruit. Hemispherical to turbinate angulai .it the 

 base ; valves prominently exserted; rim up 

 to i ' lines broad ; - s lines in diamel ei , and 

 (i lines in lengl h. 



The fruits arc characteristic, the flat rim having the 

 k/>/ of protruding from the capsule for nearly 



aninch. Easily determined by the figure hen 



Habitat. Manly; South Coasl district oi New South Wales. 



REMARKS. I'll. was plai I b Bentham (/or. cil.) as a variety of /:. resinifera 



ol Smith, and although the venation and the shape <>l the leaves of the two tries resemble each other the fruits 



and timber are distinci and quite constant, and n is on these characters that the sp ! from 

 /•.". 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 a u + 7-09°, 

 refractive index at 20 = 1-4678, and was soluble in i|- 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 D + 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 oi iginal oil O.M. . 



The above sample had hern 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 r.90 C. : — 



Crude oil, sp. gr. at 15 C. = 0-9 j.m ; n't at ion </„ 4-6-7°; refrai tive index at 



20 = 1-4640. 

 Fraction ,, ,, = o-<)io2 ; rotation (I|| 4- 57 ; refractive index at 



20° = 1-4599- 

 1 he cineol was determined by the re orcinol method and calculated foj 

 tin' crude oil ; the resull was 72 per cent. By the rapid phosphoric acid method 

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



