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We consider that it is especially unsuited for telegraph poles and piles, inasmuch as saplings of the 
size required for such purposes carry an inordinate proportion of sapwood, which is of a peculiarly 
perishable nature. 
Spotted Gum should be cut from mature trees, and should be free from sap and heart-wood. It 
also should be well seasoned. 
5. Presence of Gum-veins. 
The timbers is often deteriorated by the presence of gum-veins, and we recommend the timber to 
be “as free of gum-veins as can be pi’ocured.” 
Minimum Girth for Felling. 
The regulations of the Forest Department preclude the cutting of Spotted Gum trees less than 6 feet 
in girth, measured 5 feet from the ground. 
In our opinion this regulation concerning minimum girth should be strictly enforced, and, if 
possible, should be extended to 7 feet 6 inches. 
Exudations. — I am only aware of the existence of two previous analyses of 
this kino, but they differ exceedingly ; and in the absence of the fullest details of 
the kinos, one cannot institute comparisons between them. 
According to Mr. Staiger (quoted in Dr. J. Bancroft’s “ Contributions to 
Pharmacy from Queensland”) :— 
This kino is entirely soluble in boiling water to the extent of 60 per cent. It contains benzoic acid 
in an impure state, and catechin. The gum, insoluble in water, is of a sticky nature. When dissolved in 
alcohol, and the solution evaporated in the air without artificial aid, a sticky, clear, reddish brown, taste¬ 
less gum remained. If this is treated with ether, the sticky part of the gum goes into solution, and a dry, 
clear, reddish, tasteless gum remains possessing the qualities of shellac.” 
Mr. F. N. Grimwade ( Pharm . Journ. [3], xvi, 1102) says of a sample:— 
Soluble in rectified spirit to the extent of 80 85 per cent. ; cold water dissolved 18'9 per cent. 
Warm water extracted “a slightly higher percentage.” The amount of volatile constituents w T as 
determined to be about 7-07 per cent., and consisted almost entirely of water, with the merest trace of a 
volatile oil, to which the peculiar aromatic odour, strongly resembling styrol, possessed by the gum, is due. 
By steam distilling, two or three drops of this oil were obtained from about three-quarters of a pound of 
gum. I found no trace of either benzoic or cinnamic acids in the gum. 
The tannic acid was found to be nearly allied to, if not identical with querco-tannic acid, giving the 
blue-black precipitate with ferric chloride, which is readily distinguished from the dirty-green precipitate 
produced by kino-tannic acid, the variety existing in the B.P. kino. Percentage of tannic acid, 10 per cent. 
Dr. Wiesner says :— 
E. citrioclora, Hook., easily soluble in water ; solution faintly acid, smells like Bordeaux wine; 
yellow colour, turbid on cooling. Porous lumps with greenish lustre, like Socrotine aloes ; mixed with bark. 
E. maculata, Hook. Exactly like the last. 
This is one of the kinos mentioned as quite suitable for replacing the official 
kino in Spon’s Encyc. of Industrial Arts. It is, however, an unfortunate statement 
as regards this species, chiefly on account of its colour. 
“ The kino from Cambewarra has quite a strong odour, something like 
decomposing apples or pears, or perhaps like a not perfectly sweet wine cask. But 
while the smell is hard to describe it is easily recognised, and it appears to be - 
characteristic. 
