1050 Wisconsin Academy of Sciences, Arts, and Letters. 
—40.16°. Alcohol, ether, carbon disulphide, petroleum ether, 
chloroform and fatty oils dissolve it readily. 
The investigation of the composition of this oil has been 
undertaken by a number of workers. 6 Oglialoro 7 noted the 
presence of a small amount of a 1-terpene (pinene or camphene). 
Wallach 8 isolated dipentene and cadinene. The presence of the 
latter has been confirmed by others. 9 Cubeb camphor 10 has also 
been obtained from certain samples of the oil. It is a sesqui¬ 
terpene hydrate (C 15 H 24 H 2 0) which forms when the fruits are 
stored in a damp place or when the oil is exposed to a moist 
atmosphere. It separates out in the form of rhombic octahe¬ 
drons when the oil is cooled at a low temperature ( -12 to 
-14°C) for some time. 
The yield of the oil is stated by Schimmel & Co. 11 to be from 
10 to 18 per cent. A yield as low as 0.4 per cent, has been re¬ 
ported. 12 Schmidt obtained 14.215 per cent, from fresh cubebs 
and 13.041 per cent, from stored cubebs. 13 
Fatty Oil. Schmidt 14 describes the fatty oil as a thick, dark 
green liquid congealing at 0°C. It is stated to be slowly but 
completely soluble in cold alcohol, more soluble in hot alcohol, 
readily soluble in ether, chloroform, carbon disulphide and fatty 
oils. 
The yield as reported by the above investigator is 1.175 per 
cent, for fresh cubebs and 1.096 per cent, for fruits which have 
been stored for some time. 
“The earliest work on the constituents of the oil is that of Soubeiran and 
Capitaine, Ann. d. Chem. (1840), 34, p. 31. 
T Gaz. Chim. Ital. (1875), 5, p. 497. 
“Ann. d. Chem. (1887), 238, p. 78. 
0 Schaer and Wyss, Arch. d. Pharm. (1875), 206, p. 216; Umney, Pharm. 
Journ. (1895), 25, p. 951. 
10 Blanchet and Sell, Ann. d. Chem. (1833), 6, p. 294; Winckler, Buchner’s 
Repert. f. d. Pharm. (1833), 45, p. 397; Bernatzik, Buchner’s n. Repert. f. 
d. Pharm. (1865), 14, p. 97; Schmidt, Ber. d. deutsch. chem. Ges. (1877), 
10, p. 188. 
11 Schimmel & Co., Ber. (1897), p. 14. 
12 Busse reports 
gators as follows: 
the yield of volatile oil 
as obtained by 
various invest! 
Baum6 . . . . 
. 5.3 
per cent, 
per cent. 
Schoenwald 
. 7.03 
Oberdoerffer 
. 12.5 
per cent. 
Hager . 
. 0.4 
per cent. 
Busse . 
. .. 15. 
per cent. 
Arch. d. Pharm. 
(1844), 89, p. 30. 
13 Ibid. (1870), 191, p. 18. 
“Ibid., p. 34. 
