502 
Robinson, Frank P., presents a formula for the preparation of 
dithymol diiodide, similar to that of the French Codex, but produc- 
ing a better, a more ether-soluble compound. — Bull. Pharm., De- 
troit, 1906, y. 20, p. 155. 
Patch, E. L., reports on one lot of thymol iodide which contained 
soluble iodide and trace of free iodine. — Proc. Am. Pharm. Ass., 
1906, v. 54, p. 34T. 
Cormimboeuf, H., outlines a method for determining iodide in 
thymol iodide. — Repert. de pharm., Par., 1906, v. 18, pp. 100, 101. 
Fink, Emanuel, discusses the use of thymol iodide in the treatment 
of hay fever and points out the difficulties attending its use. — Therap. 
d. Gegenw., Berl., 1906, v. 47, pp. 163-169. 
TINCTUEJE. 
Francis, John M., considers the comments and protests with refer- 
ence to the changes in strength of tinctures a most hopeful sign, as 
it proves that the pharmacists are becoming more alive to the value 
and authority of the U. S. P. — Bull. Pharm., Detroit, 1906, v. 20, 
p. 231. 
Moerk, Frank X., calls attention to the fact that while nominally 
the tinctures of potent drugs represent 1 part of the drug in 10 of 
the finished product, in reality they represent but from 8.6 to 9.3 per 
cent of the active constituents. — Proc. Pennsylvania Pharm. Ass., 
1906, p. 159. 
Dohme, A. R. L., points out that percolated assayed drugs do 
not necessarily mean exhausted drugs and that therefore tinctures 
should be assayed irrespective' of their being prepared from assayed 
drugs. 
Similar opinion is expressed by H. A. B. Dunning, E. H. Gane, 
A. B. Lyons, and others. — Proc. Am. Pharm. Ass., 1906, v. 54, p. 445. 
Caldwell, Paul, gives the approximate percentage of alcohol present 
in the official tinctures. — Drug. Circ. & Chem. Gaz., X. Y., 1906, v. 
50, p. 434. 
Beysen, Kurt, proposes that the Ph. Germ, include the following 
definition for tinctures: Tinctures are alcoholic, vinous, or aqueous 
extracts of vegetable or animal drugs and must contain the soluble 
constituents of the whole of the prescribed drug. When not other- 
wise directed they are to be prepared by extracting the coarsely 
powdered drug with the accompanying fine powder with the required 
solvent. — Ber. d. pharm. Gesellsch., Berk, 1906, v. 16, p. 330. 
Utz believes that the pharmacopoeia should direct the specific 
gravity of all tinctures and also the extract content. — Apoth. Ztg., 
1906, v. 21, p. 931. 
Evans, J ohn, recommends the determination of the specific gravity 
by the Westphal balance, and of the extractive matter. — Apothecary, 
Boston, 1906, v. 18, p. 907. 
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