Pd 
SACCHARINE AND ASTRINGENT EXUDATIONS OF GREY GUM. 193 
*‘Eudesmin,” natural size, from kino of HE. punctata. 
tative ; (6) those that contain eudesmin alone, of which Z. punctate 
isa type; and(c) those containing both eudesmin and aromadendrin 
of which Z. hemiphloia is characteristic. 1 would here observe, 
that from my present knowledge, it appears to me that the 
presence or absence of these bodies (eudesmin and aromadendrin) 
in the kinos of the Eucalypts, will eventually be found to have a 
direct bearing upon the commercial value of their products in 
more ways than one. I look forward to the time when a few 
chemical tests of certain parts of the tree, together with examin- 
ation of the anthers, cellular and other portions, will suffice for a 
decision as to the possibilities and products of the tree, and indicate 
with some certainty what the constituents of the various products 
will be. My colleague Mr. R. T. Baker, F.u.s., to whom I am 
greatly indebted for much botanical assistance in this present 
research, is working at this side of the question. 
Besides the eudesmin, the kino of Z. punctata contains tannic 
acid and its derivatives, all of which are absorbed by hide powder, 
no other constituent being detected. They were, therefore, 
determined by this method after removing eudesmin. 
M—Aug. 4, 1897, 
