266 
and the addition of coal tar dyes. Commercial mustard should con- 
tain not more than 4.5 per cent of ash and not more than 0.5 per cent 
insoluble in 10 per cent hydrochloric acid. — Ztschr. f. Unters. d. Nahr. 
u. Genussm., 1905, v. 10, p. 32. 
Leach, A. E., discusses the determination of added mustard hulls in 
ground mustard and suggests the following limits for ground mus- 
tard, expressed on the dry, fat free substance: 
The reducing matter (as dextrose) should not exceed 2.5 per cent, the crude 
fibre should not exceed 5 per cent, and the total nitrogen should be not less 
than 8 per cent. As shown by the microscope the sample should be free 'from 
more than minute traces of starch and should not exhibit an excess of hulls 
over seed tissue. — Analyst, Lond., 1905, v. 30, p. 59. 
Hartwich and Vuillemin have examined 36 samples of mustard and 
present an exhaustive record of their findings. — Schweiz. Wchnschr. 
f. Chem. u. Pharm., 1905, v. 43, p. 394. 
Vuillemin (Pharm. Zentralh., 1905, v. 45, p. 384) proposes a modi- 
fication of Dietrich’s method for determining the amount of mustard 
oil, the final product being silver sulphide. — Analyst, Lond., 1905, v. 
30, p. 59. 
Schimmel & Co. discuss the work done by Hartwich and Vuillemin 
on the determination of mustard oil in seed. — Semi-Ann. Pep. Schim- 
mel & Co., 1905, Oct.-Nov., p. 49. 
Barford (Svensk. Farm. Tidskr.) elaborates on the work done by 
J. W. Hammer in connection with the volatile oil content of mustard 
seed. The greater number of the samples of mustard seed exam- 
ined contained more volatile oil than is required by the Ph. Ger., 
IV. — Pharm. Ztg., Berlin, 1905, v. 50, p. 563. See also Arch. f. Pharm. 
og Chem. Copenhagen, 1905, v. 12, pp. 34-37. 
Sal vert, A., outlines a method for the estimation of sulphur com- 
pounds in mustard. — Bull. Soc. de pharm. de Bordeaux, 1905, v. 45, 
pp. 142-146. 
Suss, P., (Pharm. Zentralh., v. 46, p. 291) discusses the artificial 
coloring of mustard and methods for detecting the same. — Pharm. J., 
Lond., 1905, v. 21, p. 33. 
SODII ACETAS. 
Bauer, C., describes the manufacture of sodium acetate from pyro- 
ligneous acid. — J. Soc. Chem. Ind., Lond., 1905, v. 24, p. 275 (from 
Chem. Ztg., 1905, v. 29, p. 181). 
SODII ARSENAS. 
Wulff, C., presents a comparative study of the requirements for 
sodium arsenate as recorded in the several pharmacopoeias. — Apoth. 
Ztg., Berlin, 1905, v. 20, p. 1029. " 
