A METHOD OF IDENTIFICATION OF SOME HARDWOODS. 245 
the two Grey Gums, EH. propinqua and H. punctata, indicated 
that HE. propinqua gave a darker coloured extract than H. 
punetata, and correspondingly darker colourations with 
ferric chloride, lime water, etc. 
Comparing the darker coloured Ironbarks, e.g., EH. crebra; 
EK. siderophloia, Broad Leaved Ironbark; and E. sideroxylon, 
Red Flowering Ironbark; it was found that EH. erebra gave 
alighter colouration with ferric chloride which was greenish 
in colour, whereas the other two species gave a more bluish 
tint. Lime water and caustic potash did not give a decided 
difference. It is interesting to note that burning the 
shavings of these timbers does not show any marked vari- 
ation, though E. crebra was found to smoulder slightly, 
whereas the others ‘burnt black.’ 
Light coloured timbers of the Stringybark group, e.g., 
E. eugenioides, White Stringybark; E. capitellata, Brown 
Stringybark; EH. acmenioides, White Mahogany; and H. loevo- 
pinea, Silver-topped Stringybark; showed that EH. acmeni- 
oides gave a much lighter coloured extract than the others. 
With ferric chloride, H. loevopinea gave very dark blue 
colourations. The others also gave blue, but without 
sufficient contrast to separate them. Both caustic potash 
and lime water showed a more decided pink colour with 
EK. acmenioides than with remainder, E. loevopinea giving 
darker colourations throughout. It was not found possible 
to separate EH. eugenioides from H. capitellata with any 
certainty, though the latter timber was inclined to give 
darker tints than those obtained from EH. eugenioides. 
Apart from the EKucalypts are numerous other timbers 
which fall into groups which are difficult to separate at 
times. Thus Tristania conferta, Brush Box; and Synearpia 
laurifolia, Turpentine; are two timbers which sometimes 
resemble each other closely. It was found that the Tur- 
pentine gave amuch darker colouration with ferric chloride 
