ESSENTIAL OILS OF TWO SPECIES OF HOMORANTHUS. 197 
These fractions beyond giving the usual colour reactions 
with bromine vapour and sulphuric acid in acetic anhydride 
solution, did not yield any of the solid derivatives typical 
of sesquiterpenes. The sesquiterpene appears to be identical 
with that isolated from the various Leptospermum oils 
described by the writer, and assumed to be identical with 
eudesmene. 
Minor Constitwents.—In the course of the examination 
of the crude oils the following minor constituents were 
detected, but were not present in sufficient quantity to 
enable their identity to be confirmed :—Woodburn sample, 
amyl alcohol and paraffin. Stradbroke Island sample, iso- 
valeric aldehyde and paraffin of melting point 65— 66° C. 
HOMORANTHUS FLAVESCENS. 
Material of this low decumbent shrub was collected from 
-one locality only, the State Forests at Narrabri, N.S.W., 
for the whole of which I have to thank the Forestry Com- 
mission of New South Wales, and particularly Mr. Gordon 
Burrow the District Forester, through whose kindly interest 
and assistance such excellent supplies were furnished. 
The percentage yield of crude oil averaged 0°557, varying 
from 0°35% to 0°82%, the lower yield being from material 
collected at the close of winter, the higher being attained 
about the middle of summer. 
The Essential Oil. 
The essential oils obtained from three consignments of 
leaves were of a pale straw colour, particularly mobile, and 
possessed an odour peculiar to themselves characteristic 
of the hydrocarbon ovimene, modified by the presence of 
small amounts of amyl alcohol, and its acetic and butyric 
acid esters. During the winning of the oil these low boil- 
ing constituents came through the condenser first, and 
rapidly diffused through the still room giving the charac- 
