STEAROPTENE OCCURRING IN ESSENTIAL OILS OF MYRTACE. 87 
I have to thank Mr. H. H. F. Swain, Director of Forests, 
Brisbane, and Mr. F. C. Epps, Forest Ranger of Frazer 
Island, Queensland, for kindly furnishing the excellent 
supply of leaves from that locality; also Messrs. Gillard 
Gordon Limited, Sydney, for permission to publish the 
results from material collected at Broadwater. My thanks 
are likewise due to Mr. F. R. Morrison, Assistant Chemist, 
for much help in the investigation, and Mr. C. F, Laseron, 
the Museum collector, for the material from Woodburn, 
New South Wales. 
PRELIMINARY NOTH ON A NEW STHAROPTENE 
(PROBABLY A PHENOL ETHER) OCCURRING 
IN SOME HSSHNTIAL OILS OF THH MYRTACHAL. 
By A. R. PENFOLD, F.c.s., and F. R. MORRISON. 
[Read before the Royal Society of N.S. Wales, July 5, 1922. ] 
In the course of investigations at present being undertaken 
in this laboratory on the essential oils of Australian plants, 
we have observed the presence of a solid constituent of 
high melting point in a number of those belonging to the 
N.O. Myrtacez, varying from traces up to about 6%, which 
apparently has not been previously observed or recorded. 
So far, those oils yielding this constituent in greatest 
amount are the essential oils of Baeckea crenulata(5'5/) and 
Darwinia grandiflora (27%). The examination of these two 
Oils is proceeding, and the results will be communicated to 
the Society in papers to be presented later. We have 
thought it advisable to record the occurrence of this inter- 
esting substance, together with a note of its characters 
