6 
From the rectification residue a considerable amount of cuminic aldehyde 
was separated by means of its bisulphite compound. It was identified by oxidation 
to cuminic.* 
Messrs. Schimmel & Co’s, own figures, obtained from a South Australian 
specimen, are, specific gravity of crude oil ‘093 at 16° C., rectified oil - 909 at 18° C- 
No phellandrene could be detected. 
In Schimmel’s Semi-Annual Report of October-November, 1903, p. 36, is a 
discussion as to whether an oil of this class does (Schimmel) or does not (H. G. 
Smith) contain cuminic aldehyde. 
Messrs. Baker and Smithf give the following result of examination 
of this oil:— 
Specific Gravity 
at 15°C. 
Specific Rotation. 
Md 
Saponification 
Number. 
Solubility in 
Alcohol. 
Constituents found. 
0-9042 
+ 2-43° 
3-41 
1 vol. 
Eucalyptol, 
80 per cent. 
pinene, 
aromadendral. 
Bark .—Hard, scaly, or sub-fibrous, furrowed in the case of larger trees. 
Branches smooth or nearly so. It is often of that peculiar character known as 
“ Peppermint.” It is very commonly intermediate in character between that of an 
Ironbark and a Box, hence the name “ Ironbark Box,” which is sometimes applied 
to it in New South Wales, and which is descriptive. The height to which the scaly 
or sub-fibrous bark occurs up the trunk varies. 
Timber. —The timber is pale or fawn brown in colour, though sometimes 
darker, with sap-wood of a dull white where present—old trees often showing no 
difference in colour. It is heavy, dense, and hard to work with plane or any other 
tools. Being usually cross-grained it makes the very best of mauls, and is one of 
the most valuable Of firewoods. It is used for posts which last—when obtained from 
trees of fair size—for about fourteen years, though the scrub form, called often 
“ Black Mallee,” is comparatively worthless for that purpose. 
Trees of this Gum are in most instances too hollow to give timber for 
construction purposes of any size, but it is well adapted for bearing considerable 
strain in all directions, where obtainable in large dimensions. Sound mature timber 
weighs 70 lb. per cubic foot seasoned. (W. Gill.) 
Exudation. —Friable and brownish. 
Size. —A shrub or medium-sized tree, rarely a very large tree. Sometimes 
mallee-like, but not a true Mallee. 
•Bericht von Schimmel & Co., April, 1889, p. 19. See also Pharm. Journ., (3) xix, 843 (April 20th, 1889). 
t “ Research on the Eucalypts,” p. 286. See also pp. 210-211 for a fuller account of the oil. 
