208 
similar conditions, did not increase in weight. — Ibid., v. 22, pp. 
493, 494. 
Bell. J. Carter, points out the need for providing tests for lini- 
mentum camphorse, particularly for the detection and estimation of 
mineral oils and determining the deficiency in active principle. He 
outlines a series of tests. — Brit. & Col. Drug., Loud., 1906, v. 49, pp. 
548, 549. 
Utz (Pharm. Nachr., 1906, v. 1, p. 222) points out that the most 
satisfactory method for the determination of camphor liniment is by 
polarization. — Chem. Repert., Cothen, 1906, v. 30. p. 351. 
The Ph. Brit. Committee of Reference in Pharmacy points out that 
a method for estimating the camphor in spirit of camphor is desira- 
ble.— Chem. & Drug., Lond., 1906, v. 69, p. 865. 
Xestell, Raymond J., proposes a method for the examination of 
spirit of camphor based upon the fact that the addition of sufficient 
water to the spirit will separate out nearly all of the camphor and 
that the increase in volume of an immiscible solvent is practically 
equal (c. c.-gm.) to the weight of the camphor dissolved. — Drug. 
Circ. & Chem. Gaz., X. Y., 1906, v. 50, p. 5. 
Leach, Albert E., reports that a number of samples of spirit of 
camphor were found to vary considerably from the pharmacopceial 
standard. The published report indicates that three of these sam- 
ples varied from 35 to 50 per cent of the required amount. — Rep. Mas- 
sachusetts Bd. Health. 1906, p. 403. 
Linke, R., reports finding a sample of spirit of camphor made with 
methyl alcohol, and calls attention to the advisability of testing for 
methyl alcohol. — Apoth. Ztg., Berl., 1906, v. 21, p. 1023. 
Arnost, Alois, outlines a method for the estimation of camphor, 
which depends on the shaking out of the contained camphor by means 
of petroleum benzin, in a specially designed apparatus. — Ztschr. f. 
Unters. d. Xahr. u. Genussm., 1906, v. 12, pp. 532-539. 
Beysen, Kurt, suggests that the Ph. Germ, require the following- 
assay in connection with spirit of camphor : On shaking, in a gradu- 
ated cylinder, 10 gm. of spirit of camphor with 10 gm. of a solution 
of sodium chloride and 5 c. c. of petroleum ether the resulting petro- 
leum ether layer should measure at least 6 c. c. The camphor remain- 
ing after the evaporation of the petroleum benzin should have a 
melting point of 175° C. — Ber. d. pharm. Gesellsch., Berl., 1906, 
v. 16, p. 330. 
Barnard, H. E., reports that but 30 of 70 samples of spirit of 
camphor analyzed contained a sufficient quantity of camphor to com- 
ply with the requirements of the U. S. P. VIII. One sample con- 
tained but 16 per cent of the required amount. — Rep. Indiana Bd. 
Health, 1906, pp. 381-383. 
