191 
enumerated: Potassium hydrate, 35.0; distilled water, 25.0; oleic 
acid, 50.0; iodine, resublimed, 30.0; and alcohol, 95 per cent, 30.0. 
The resulting iodoform soap solution is said to be readily absorbed 
by the unbroken skin. — Boll. Chim. Farm., 1905, v. 44, pp. 702-704. 
Mulzer, P., presents an exhaustive discussion of the action of 
iodoform in the animal body and gives tabulated results of find- 
ings, both ante and post mortem. — Ztschr. f. expt. Path. u. Therap., 
Berlin, 1905, v. 1, pp. 446-449. 
IODUM. 
Ivothner and Auer discuss the work done by Stas, and some of the 
succeeding workers, in connection with the atomic weight of iodine, 
and report their experiments which lead them to believe that the 
atomic weight of iodine is 126.98 with 0 = 16. — Liebig’s Annal, d. 
Chem., v. 337, p. 169. 
Ladenburg, A., offers some criticism on the report made in the above 
article, and Kothner, P., replies. — Ibid., pp. 259-265. 
Baxter, Gregory Paul (from Proc. Am. Acad, of Arts and Sc., v. 
40, p. 419), discusses the work previously done, the relation of silver 
to iodine, the purification of the materials used, the method of analy- 
sis, the relation of silver iodide to silver chloride, and finally gives 
as his conclusion that the atomic weight of iodine is 126.975 with 
0 = 16. — Ztschr. f. anorgan. Chem., 1905, v. 43, pp. 14-33. 
Barbieri, Giuseppi, presents a note on the alkalimetric determina- 
tion of iodine. — -Boll. Chim. Farm., Milano, 1905, v. 44, pp. 6-7. 
Hennecke advises the titration of iodine in chloroform solution, 
instead of the usual aqueous potassium iodide solution, in order to 
avoid the decomposition of the iodine monochloride, which it may 
contain. — Bull, des Sc. Pharmacol.. Paris, 1905, v. 12, p. 16. 
Thilo (Chem. Ztg., v. 28, p. 866) outlines a method for the de- 
termination of iodine in the presence of bromine and chlorine, which 
is based upon the observation that the gradual addition of a silver 
salt solution to a solution containing all three halides will first 
precipitate the iodine, and that the latter will also convert silver 
bromide and chloride into iodide. The end point of the iodine pre- 
cipitation, carried out with silver solution of known strength, is 
shown when a drop of the solution no longer gives a dark spot of 
palladinous iodide on filter paper freshly dipped into palladinous 
chloride solution.— Abstr., J. Am. Chem. Soc., 1905, v. 27, p. 1347. 
Tatlock and Thomson outline a method for the determination of 
small proportions of bromine and of chlorine in iodine, in which they 
propose treating 5 to 10 gms. of the sample with 50 to 100 cc. of 
water and finely granulated or powdered zinc to convert all of the 
iodine into zinc iodide, care being taken not to allow the temperature 
