127 
(Mueller and Rumroel, in Wittstein's " Organic Constituents of Plants," p 175 
1878.) 
As it has such a bitter, acrid taste (like the fruits) I quite expected it would 
possess medicinal properties, but Dr. Thomas Bancroft informs me that this genus 
is physiologically inert, or practically so. 
In an article, " The Medicinal Uses of Pittosporum Barks " (Pkarm. Journ., 
xviii, 4th ser., 30th April, 1904, p. 588), will be found a useful abstract of papers 
referring to the resins and bitter principles contained in barks of the genus. 
Dr. M. GreshofE found a Saponin in this species (Kew Bulletin for 1909, p. 414). 
The note is valuable, and will be found at p. 57, Part LIII, of the present work. 
Exudations and Oils. These are obtained from both the bark .and from 
the fruit, and the following papers may be referred to : 
1 . Notes on the Exudations yielded by some Australian Species of Pittosporum," 
by J. H. Maiden (assisted by H. G. Smith). (Rep. Aust. Assoc. Adv. Sci., iv, p. 289, 
1892.) This will be useful for reference. 
2. The late Dr. Joseph Lauterer, of Brisbane, examined a soft resin from this 
tree. See his paper, " Gums and Resins exuded by Queensland Plants Chemically and 
Technologically Described," in Bailey's Botany Bulletin (Queensland), No. XIII (1896), 
p. 50. 
It remains to be mentioned that the fruits and the wounded bark of this species 
exude a peculiarly aromatic gum-resin, which is very viscid, and which apparently 
possesses stimulating properties, and might therefore be found useful in medicine, 
both for external and internal application. I do know that it was applied to the wounds 
of a dog, and that the dog soon got well, and that the cure was attributed to the resin, 
but should be sorry to generalise from this one incident. 
3. " Note on Some Products from the Fruit of Pittosporum undulatum, and from 
the Leaves of the Pepper Tree, Schinus molle," by R. H. Threlfall, Proc. Roy. Soc. N.S.W., 
xxix, p. 456 (1895). 
He obtained 70 c.c. of a thick juice from 500 grm. of fruit by means of a screw 
filter-press. From this an oil was obtained by distillation. The residues were also 
treated. The oil was subjected to fractionation, with results stated, and the refractive 
index was also measured. 
4. " The Constituents of the Essential Oils from the Fruit of Pittosporum 
undulatum," by Frederick Belding Power and Frank Tutin. (Journ. Chem. Soc., July, 
1906, pp. 1083-92.) 
Its fruits when bruised have an odour similar to that of the Tangerine orange, and yield on 
distillation 0-44 per cent, of essential oil. The oil undergoes change on keeping. A sample of freshly 
distilled oil gave the following constants : 
Specific gravity, 0-8165; (a)c = + 74 4'; a trace of free acid, a large amount of esters, no 
aldehydes or ketones, and a small quantity of phenols having the odour of eugenol. On distillation the 
following fractions were obtained : Up to 165 C., pinene 4 per cent. ; up to 173-180 C., limonene 
