ESSENTIAL OIL OF KUNZEA CORIFOLIA. 201 
means of resorcin solution, but the amounts were too small 
to permit of the confirmation of their identity. It might 
be mentioned here that in order to obtain the terpenes in 
anything like a condition of purity it was necessary to 
remove these constituents by the procedure indicated. 
In conclusion [ bave to thank the Director of Forests, 
Brisbane, for making the necessary arrangements for the 
-collection of material of H. virgatus from Stradbroke Island, 
-Queensland, and Mr. F. Morrison, Assistant Chemist, for 
his usual help in these investigations. 

THE ESSENTIAL OIL OF KUNZEA CORIFOLIA. 
By F. R. MorRRIsoN, 
Assistant Chemist, Technological Museum, Sydney. 
[Read before the Royal Society of N. S. Wales, November 1, 1922. | 
_ THIS species, described by Bentham in ‘Flora Australi- 
-ensis,”’ Vol. Il, page 115, is a dark green bushy shrub, 
and grows on the eastern coast of New South Wales, 
attaining a height of 5 to 15 feet. This is one of the 
commonest of the tea trees growing inthe Port Jackson 
district, but owing to the rapid spread of population is not 
now so plentifulas formerly, nevertheless, luxuriant patches 
are still to be found quite close to Sydney. The material 
from which the essential oils were distilled for investiga- 
tion was obtained from Gore Hill, Longueville, Waverley 
and Hornsby, all near Sydney. 
The essential oil consists principally of d-o-pinene, a 
‘Ssesjuiterpene closely resembling cadinene, together with 
