134 
Silberrad, Oswald, presents the results of experiments to deter- 
mine the rate of removal of nitrous acid from concentrated nitric 
acid. — Ibid., v. 69, May 21, p. 40. 
Littmann, Sigmund, discusses the relation of selenium to the 
manufacture of sulphuric acid and points out some of the difficulties 
encountered, due to its presence in all kinds of pyrites. — Chem. Eng., 
Phila., 1906, v. 14, pp. 190-197. 
Scholtz, M. outlines a method for the titrimetric estimation of 
combined sulphuric acid. (From Arch. d. Pharm.). — Pharm. Zen- 
tralh., 1906, v. 47, p. 319. 
Caspari. Chas. E., reports two samples examined : One U. S. P. ; 
one contained arsenic. — Proc. Missouri Pharm. Ass., 1906, p. 100. 
Kebler, Lyman F., reports a sample of sulphuric acid extremely 
dark in color, due to action of acid on the luting employed in closing 
packages. — Proc. Am. Pharm. Ass., 1906. v. 54. p. 348. 
Kraemer, Henry, reviews the history and use of sulphur in con- 
nection with disinfection, and records experiments made with the 
use of sulphuric acid as a fungicide. He concludes that dilute solu- 
tions of sulphuric acid appear to have a beneficial effect on the plants 
treated apart from fungicidal action. — Proc. Am. Philosoph. Soe., 
1906, v. 46, pp. 157-163. 
ACIDUM SULPHUPvOSUM. 
Coblentz, Virgil, gives the results of a number of experiments in 
the extemporaneous preparation of sulphurous acid and the reason 
for the use of charcoal as over against copper. — Am. J. Pharm., 
Phila., 1906, v. 78, p. 389. 
Ehman, J. TV, presents the work of F. L. Cheney in the prepara- 
tion of extemporaneous sulphurous acid by a process similar to that 
of compound solution of chlorine. — Ibid., x. 78, p. 333. 
An abstract from U. S. patent Xo. 829765 outlines the production 
of sulphurous acid from sulphur-containing ores. — Chem. Repert., 
Cothen. 1906, v. 30, p. 352. 
Deniges, G., discusses the application of a characteristic reaction 
for sulphurous acid and sulphites, depending on the reducing action 
of the lower oxides of phosphorus. — Bull. Soc. de pharm. de Bor- 
deaux, 1906, v. 46, pp. 161-164. 
Bigelow, TV D., outlines the methods adopted by the Association 
of Official Agricultural Chemists for the determination of sulphurous 
acid in foodstuffs and allied products. — Circ. Bur. Chem. U. S. Dept. 
Agric., 1906, Xo. 28, pp. 11-12. 
Kirk, C. D. R. (Mod. Eclecticism, December, 1905), considers the 
red tongue, with dirty coating (in typhoid), an unmistakable appeal 
for “ specific sulphurous acid." The case was not one for ecliafolta, 
