VOLATILE OIL OF DAPHNANDRA AROMATICA. 133 
The Composition of the Volatile Oil of 
the Leaf of Daphnandra aromatica 
Bailey. 
By T. G. H. Jonss, B.Se., A.I.C., and FRANK SMITH, 
BSc; Hee: 
(Read before the Royal Society of Queensland, 26th 
November, 19283.) 
SUBSEQUENT to the publication of our note (this 
volume, pp. 61-2) on the essential oils from the bark and 
leaves of Daphnandra aromatica, we received from North 
Queensland through the courtesy of Mr. E. H. F. Swain, 
Director of Forests, a further supply of leaves permitting 
of chemical examination in detail of their volatile oil. 
Contrary to expectation from the cursory examination 
of the small amount of leaf oil (40 ces.) previously avail- 
able, limonene was not found to be present in the lower 
boiling fractions of the oil. 
The principal constituents of the oil are da-phelland- 
rene and a sesquiterpene; the other bodies present being 
d-pinene, cineol and a sesquiterpene alcohol together with 
small quantities of an aldehyde (probably iso-valeric or 
caproic) and a phenolic body. 
In view of the present inexact condition of knowledge 
of the sesquiterpene group and of the scantiness of the data 
secured, it is not possible to decide whether the sesquiter- 
pene and the sesquiterpene alechol of Daphnandra leaf oil 
are each distinct chemical entities or are identical or not 
with any similar bodies previousiv described. 
Experimental.—The distillation in steam of 200 lbs. 
of air-dried leaves yielded 400 ces. or -5 per cent. of a pale- 
yellow oil of agreeable odour possessing the following 
constants :— 
ad 
: ‘ 15: 
Specific gravity —— 9084 (N)p» 1-4892 (a) + 23-6. 
Ester value 10, Acetyl value 40. 
