220 
method of Bohmer, and that heated cotton seed oil, which does not 
give the Halphen test, can be detected by this method. He also 
criticises the paper referred to above. — Ibid., pp. 589-596. 
OLEUM HEDEOMJE. 
Umney and Bennett point out that their experience with American 
oil of pennyroyal is comparatively limited, but that examination of 
European samples of Spanish, French, and Portuguese origin show 
that these, as a rule, have a specific gravity within the limits of 
0.935 to 0.945 at 15° C. — Pharm. J., Bond., 1905, v. 21, p. 146. 
OLEUM JUNIPERI. 
Umney and Bennett point out that the solubility test of oil of 
juniper is a little too stringent, as it will exclude some pure oils 
except freshly distilled. — Pharm. J., Bond., 1905, v. 21, p. 146. 
Strocker (from Pharm. Post) has examined samples of Hungarian 
oil of juniper, which is obtained as a by-product in the manufacture 
of gin, and finds that the better quality corresponds fairly Avell to 
the requirements of the Ph. Austr. He gives the constants found, and 
concludes that for the preservation of the oil it is important that air 
be excluded. — Pharm. Zentralh, 1905, v. 46, p. 823. 
Brandel, I. AY., refers to two oils originating from Russia which 
showed dextro-rotation of +7° to +8°. This deviation in the optical 
behavior appears to be due solely to the origin of the oils, for in 
other respects the oils did not differ from a normal distillate. — 
Pharm. Rev., 1905, v. 23, p. 340. 
Delphin, Af. T., discusses the testing of oil of juniper. — S.vensk. 
Farm. Tidskr., 1905, v. 9, pp. 81-83. - 
OLEUM LAVENDULJE FLOEUM. 
Umney and Bennett point out that the U. S. P.. VIII, includes no 
recognition of the determination of ester percentage, nor indeed any 
method for its valuation; in commenting further on the difficulties 
involved, they say : 
One can see the difficulties of the compilers of the U. S. P. in trying to 
nrrange a monograph that would exclude English oils, or, vice versa. Perhaps 
it was the wisest way out of the difficulty. — Pharm. J., Lond., 1905, v. 21, p. 146. 
Schimmel & Co. point out that among the more common adulter- 
ants detected during the last season in oil of lavender were oils of 
turpentine, rosemary, spike, and the so-called Spanish lavender 
oil, as to the botanical origin of which little or nothing definite is 
known. They enumerate the constants of these several oils and call 
attention to their differences. — Semi-Ann. Rep., Schimmel & Co., 
1905, Apr.-May, pp. 50, 54. 
