AROMADENDRIN FROM EUCALYPTUS KINOS. 135 
Ox AROMADENDRIN or AROMADENDRIC ACID From 
THE TURBID GROUP or EUCALYPTUS KINOS. 
By Henry G. Smiru, F.c.s. 
[Read before the Royal Society of N. S. Wales, August 5, 1896.] 
Ar the general meeting of this Society held on June 5th of Jast 
year, a paper’ was read by the author in conjunction with Mr. 
é. Maiden, in which was described the new organic substance 
“Eudesmin” found by us existing in the kino of Hucalyptus 
hemiphloia, which body (together with another new organic sub- 
stance existing in the same kino provisionally named by us 
Aromadendrin) caused the turbidity of this Eucalyptus kino when 
dissolved in hot water and allowed to cool. We then promised to 
make a further communication to the Society when the chemistry 
of this other body (Aromadendrin) should have been worked out. 
Through the transference of Mr. Maiden to the Directorship of 
the Botanic Gardens, the work of continuing this research has 
devolved upon me. It is with pleasure that I am enabled to lay 
before the Society the results of my investigation in this direction. 
Some short time since the Bureau of Agriculture for Western 
Australia, forwarded to the Technological Museum a sample of 
the kino of the Red Gum, Eucalyptus calophylla, R. Br., and in 
investigating this kino, which belongs to the turbid group of 
Eucalyptus kinos, it was found that the turbidity was caused by 
the second body found in the kino of Zucalyptus hemiphloia and 
named Aromadendrin. It was also found that “eudesmin” was 
entirely absent. This was a most gratifying discovery, as it has 
enabled me to make this investigation upon a pure substance, free 
from “eudesmin,” the presence of which in a kino makes it exceed- 
'8 difficult to obtain Aromadendrin sufficiently pure for research 
1 eh é . 
A Contribution to the Chemistry of Australian Myrtaceous Kinos— 
Surn. Royal Society of N. 8. Wales, 1895, Vol. xx1x., p. 30. 
