47 
tion 1 : 100,000, which is the least permissible quantity of arsenic 
allowed by the pharmacopoeia. — Meyer Bros., Druggist, 1905, v. 26, 
p. 248. 
Hill, C. A. (Chem. and Drug., Lond., 1905, v. 67, p. 548), describes 
an effective method of applying the Gutzeit test for arsenic. — Ref. 
from Ind. Med., 1905, v. 3, p. 1137., 
Lockemann, Georg, gives a comprehensive review of the literature 
relating to the use of the Marsh apparatus and its various modifica- 
tions. — Zeitscher. f. angew. Chem., 1905, v. 18, pp. 416-429. 
Pozzi (L’Industria Chimica, v. 6, p. 144) outlines a rapid method 
for the determination of arsenic by regulating the flow of hydrogen 
from a Marsh apparatus and slowly passing the arsine through a 
solution of tenth normal silver nitrate with ammonia. After three 
or four hours he acidifies the silver solution and determines the 
amount of undecomposed silver nitrate by means of potassium sul- 
phocyanate, using ferric sulphate as an indicator. — Abstr. J. Am. 
Chem. Soc., 1905, v. 27, p. 1350. 
Gautier, A. (Zeitschr. f. Unters. d. Nahr. u. Genussm.) , recommends 
a method for the determination of small quantities of arsenic which 
depends on the fact that, in the oxidation and precipitation of iron, 
all of the arsenic that may be present in a solution is precipitated 
with the iron. — Abstr. Pharm. Prax., 1905, v. 4, jd. 13. 
Mai and Hurt (Zeitschr. f. Unters. d. Xahr. u. Genussm., 1905, v. 9, 
pp. 193-199) discuss an improved method of estimating arsenic 
electrolytically, and figure the apparatus. — Abstr. Exp. Sta. Rec., 
v. 17, Xo. 1, p. 7. 
Frerichs and Rodenburg review the work that has been done on 
methods for the electrolytic determination of minute quantities of 
arsenic. — Arch. d. Pharm., 1905, v. 243, p. 328. 
Hill and Collins describe and figure the apparatus used in an ef- 
fective and simple method of applying the Gutzeit test. — Chem. & 
Drug. Lond., 1905, v. 67, pp. 548, 739. 
Chapman and Law express a preference for cadmium chloride in 
place of stannous chloride. — Ibid., p. 768. 
Cantoni and Chautems (Arch. Sc. phys. nat. Geneve, 19, p. 364- 
366) point out that arsenic can be separated from antimony by mak- 
ing use of the volatility of methyl arsenite at the ordinary tem- 
peratures. — Abstr. J. Soc. Chem. Ind. Lond., 1905, v. 24, p. 691. 
Xorton and Koch outline a method for the detection and the de- 
termination of arsenic and antimony in the presence of organic mat- 
ter. — J. Am. Chem. Soc., X. Y., 1905, v. 27, pp. 1247-1251. 
Miranda (Revista Farmaceutica Chilena) outlines differential re- 
actions to distinguish methylarsenate, cacodylate, and arsenate of 
sodium. — Abstr. Repert. de Pharm. Paris, 1905, v. 17, p. 102. 
