283 
mixed with more or less corn starch. — Paint, Oil and Drug. Rep., 
1905, Oct. 6, p. 15. 
The committee on adulteration reports finding one sample of 
powdered tragacanth which contained dextrin. — Proc. Michigan 
Pharm. Ass., 1905, p. 79. 
Payet, M. E., outlines a test for powdered acacia in powdered traga- 
canth which depends on the brown color produced by the oxidase of 
.the former when brought in contact with an aqueous solution of 
guaiacol in the presence of hydrogen dioxide. — Ann. de chim. analyt., 
1905, v. 10, p. 63. 
White, Edmund, points out that if mucilage of tragacanth be mixed 
with water and muscilage of acacia, respectively, the mixed muscilages 
are thinner than the corresponding mixture of tragacanth and 
water ; . . . with other gums, like ghatti, which form glairy or viscous 
muscilages the same result does not appear to be obtained. He be- 
lieves that the cause of this phenomenon is a problem which could 
very well be placed on the research list of the B. P. C. — Pharm. J., 
Bond., 1905, v. 21, p. 133. 
TROCHISCI. 
The editor believes that little change was called for in the official 
troches, because the preparation of lozenges has never been part of 
the art of the pharmacist, and the few combinations that have ap- 
peared in the various pharmacopoeias have met with little apprecia- 
tion at the hands of the medical profession. He also points out that 
compressed lozenges in this country have taken almost altogether the 
place of the confectioner’s productions. — Drug Topics, 1905, v. 20, 
p. 217. 
TJLMTJS. 
Eberle, E. G., mentions Ulmus fulva among the medicinal plants of 
Texas. — Proc. Am. Pharm. Ass., 1905, v. 53, p. 305. 
Vanderkleed, Charles E., found one sample of powdered elm bark 
which was grossly adulterated with starch. — Proc. Penna. Pharm. 
Ass., 1905, p. 54. 
Havenhill, L. D., examined 9 samples of powdered elm bark. Two 
were found to contain traces of starch, and 2 additional samples con- 
tained a considerable quantity of wheat starch, and did not yield a 
satisfactory mucilage. — Proc. Kansas Pharm. Ass., 1905, p. 90. 
Hommell, P. E., discusses the use of a glycerite of elm bark as a 
vehicle for a number of drugs, particularly insoluble substances such 
as bismuth subnitrate, and bismuth subcarbonate. — Proc. N. J. Pharm. 
Ass., 1905, pp. 59-61. 
UNGUENT A. 
Haenen, M., discusses the preparation of ointments, and insists on 
the need of having these preparations homogeneous. For the deter- 
