399 
Smith, Kline & French Co. report on the examination of two sam- 
ples of oil of spearmint having specific gravity of — 34° 30'. — Lab. 
Rep. S. K. & F., 1906, p. 24. 
See also under Mentha Viridis. 
OLEUM MORRHU2E. 
Schelenz, Hermann, discusses the etymology of Gadus'morrJiua and 
the introduction of the oil as a medicine. — Pharm. Zentralh., 1906, v. 
47, pp. 165, 166. 
An unsigned article presents some interesting data relating to the 
history of cod-liver oil in Newfoundland. — Oil, Paint and Drug Rep., 
1906, Jan. 22, p. 39. 
Tolman, L. M., presents the results of an exhaustive study of 
American cod liver oils and points out that the standards of the 
U. S. P. VIII, which are satisfactory for the Norwegian oils, are not 
applicable to the American oils. The latter are liable to show more 
variation and the U. S. P. nitric acid test is liable to give misleading 
results with many pure cod liver oils of American origin. — J. Am. 
Chem. Soc., 1906, v. 28, pp. 388-395. 
Weigel, G., comments on the condition of the cod liver oil market 
and reviews the tests and reactions that are in use. — Pharm. Zentralh., 
1906, v. 47, p. 890. 
Wiebelitz, H., suggests that in place of using litmus paper as sug- 
gested in the pharmacopoeia, the use of one-tenth normal potassium 
hydroxide solution is preferable for determining the limit of acid- 
ity. — Pharm. Ztg. Berl., 1906, v. 51, p. 1004. 
Yreven, S., (Anal, de Pharm., 1906-7) describes a new color re- 
action of cod liver oil by treating with a mixture of ether and alcohol 
and a subsequent addition of fuming nitric acid. — Apoth. Ztg., Berl., 
1906, v. 21, p. 352. 
Bull, Henrick, (Chem. Ber., 1906, v. 39, pp. 3570-3576) reports 
experiments in the separation of the fatty acids of cod liver oil by 
fractional vacuum distillation. — Biochem. Centralbl. Leipz., 1906-7, 
vol. 5, p. 881. 
Madsen, Fred. V., discusses the examination of cod liver oil and 
the determination of the several constants required. — Arch. f. Pharm. 
og Chem., Copenhagen, 1906, v. 13, pp. 7-9, 17-22, 34-38, 49-55. 
Thomson and Dunlop have shown that the refractive index has no 
independent value as a test of the purity of cod liver oil, and now 
describe experiments to show that it throws no additional light on the 
effect of oxidation. — Abstr. in J. Soc. Chem. Ind., Bond., 1906, v. 25, 
p. 272. 
An editorial discusses the article by Thomson and Dunlop and calls 
attention to the differences in the iodine number of cod liver oil and 
