214 
OLEUM CAJUPUTI. 
Umney and Bennett believe that a minimum of 50 per cent of 
cineol would be more in accordance with the minimum specific gravity 
requirement; they also point out that there is one test, the test for 
the absence of copper, which is not quite clear, and assert that — 
Should such a test be insisted on, there would be no necessity for the inclusion 
•in the description of the words “ a greenish liquid,” as the green color of cajuput 
oil is entirely removed by the shaking with a solution of ferrocyanide of potas- 
sium, indicating that it is due to the presence of copper. — Pharm. J., Lond., 
1905, v. 21, p. 145. 
See also Semi- Ann. Rep., Schimmel & Co., 1905, Apr.-May, p. 12. 
Geerligs, H. C. Prinsen (from Pharm. TCeekbl.) points out that 
the green color of cajuput oil is due to the presence of copper, this 
being dissolved by the butyric and valeric acids and the esters of these 
acids which are contained in the oil ; this he demonstrates by experi- 
ments with the purified oil from which the acids and esters had been 
completely removed. — J. Ghent. Soc., Lond., 1905, v. 88, part 2, p. 223. 
Schimmel & Co. give the quantity of this oil imported into the 
United States as having increased from 1783 pounds in 1902 to 31,137 
pounds in 1904. — Semi- Ann. Rep., Schimmel & Co., 1905, Oct.-Xov., 
p. 14. 
OLEUM CARI. 
Schimmel & Co. discuss the production of caraway seed, the mar- 
keting of a chemically pure carvone. the constants of the latter, and 
the isolation of several hitherto unknown bodies from oil of caraway. 
These latter are given as (1) a small quantity of a base with nar- 
cotic odor, which was not examined further; (2) dilwdrocarvone, the 
constants and properties of which are enumerated; (3) clihydrocar- 
veol, the behavior, constants, and properties of which are also 
enumerated. — Semi-Ann. Rep., Schimmel & Co., 1905, Apr.-May, 
pp. 19-21. 
Schimmel & Co. report finding adulterations of carvone (carvol). 
One sample, in addition to being adulterated with 15 per cent of alco- 
hol, was so exceptionally deficient in solubility as to clearly evidence 
the inferior quality of the base used. — Ibid ., Oct.-Xov., p. 14. 
Umney and Bennett point out that no process has been included 
for the determination of carvone, but that the physical characters 
enumerated should suffice to ensure an oil containing over 50 per 
cent carvone. — Pharm. J., Lond., 1905, v. 21, p. 145. 
Riedel’s Berichte reports that the limitations of the boiling point 
of oil of caraway, 229 to 230° C., as given in the Ph. Germ., IV, 
were found to be limited to a barometric pressure of from 755 to 770 
mm. — Riedel’s Berichte, Berlin, 1905, p. 48. 
