ciccoubechy Sahulice ara saline ta i aba enue 
CHEMISTRY OF AUSTRALIAN MYRTACEOUS KINOS. 31 
In the papers already published* it was suggested that this 
body was catechin for the following reasons—it was mostly 
dissolved in boiling water but separated again on cooling, it gave 
an intense purple colour with concentrated sulphuric acid (in the 
precipitate of the Eucalyptus kino tested), it gave a yellow colour 
with caustic potash; for these reasons, which are admittedly 
inconclusive, the substance was at the time considered to be 
catechin. Work on these kinos has been since proceeded with, 
though slowly, in consequence of other demands on our time. 
At the recent meeting (January 1895) of the Australasian 
Association for the Advancement of Science, held at Brisbane, 
Dr. Lauterer of that city, read a paper on “Queensland native 
astringent medicines,” and the paper has since been published. { 
The most interesting observation in this paper from a scientific 
stand point is where the writer seeks to show that the substance 
causing turbidity in kinos is ellagic acid. As the presence of 
ellagic acid had not been detected by us in kinos, we considered 
that the time had arrived when the results of our experiments in 
this connection might be usefully published. It is with pleasure 
that we place the results of our investigation before this Society, 
and announce the separation of two new organic substances, to 
the presence of which, either singly or in company, the turbidity 
of some kinos is due. 
As the work of classification has already been dealt with by 
one of us, in three papers read before the Linnean Society of New 
South Wales,t we have restricted our researches to a typical 
Eucalyptus kino belonging to the turbid group, namely that of 
Eucalyptus hemiphloia, F.v.M., and also that of Angophora 
lanceolata, Cav. 
iT Pree. Linnean 8 Society, N. s. W., ‘{2ys vi 1, 389 (1891). 
+ Chemist and Druggist of Australasia, May Ist, 1895, p. 1 
t Proc. Linn. Soc,, [2] 1v. 605-18 (1889); [2] rv. 1277-87 pets [2] vie 
389 (189 1). 
§ The exudations of the Angophoras closely resemble those uf some 
— of the Turbid Group of Eucalyptus kinos. See “ Angophora 
'"—Proc, Linn, Soc., N.S.W. [2] rv. 253 (1891.) 
