133 
and health and outlines the method of conducting the experiments. — 
Circ. Bur. Chem. U. S. Dept. Agric., 1906, No. 31, pp. 12. 
Duret (Bull. Acad. Med., Paris, v. TO, No. 26) suggests that the 
use of salicylic acid and other preservatives may be responsible in 
part for the extraordinary frequency of intestinal affections, includ- 
ing cancer. — J. Am. M. Ass., 1906, v. IT, p. 161. 
The compiler of the “ Therapeutics ” column mentions some of the 
principal external uses of salicylic acid, such as pruritus, corns, 
bromidrosis, eczema, and chancres, with appropriate forms of admin- 
istration. — Ibid., v. IT, p. T16. 
ACIDUM STEAR-ICUM. 
Dieterich, Karl, reports the examination of 11 samples of stearic 
acid, which varied in melting point from 51° to 5T° C. The acid 
number varied from 201.85 to 20T.95. — Helfenberger Annalen, 1905, 
1906, v. 18, p. 63. 
MacFadden, TV. Lester, says that stearin is always in a more or less 
rancid condition and is only excusable in ointments in small amounts. 
It is a satisfactory hardener, if that effect is desired regardless of 
results, but it is little used. Through its crystalline structure it is 
disposed to impart roughness. He discusses the uses of ammonium, 
sodium, and potassium stearates in the making of ointments, and 
asserts that stearic acid lends to ointments its property of absorptive- 
ness, but it must be used with judgment. It has distinctly acid prop- 
erties, which render chemical action possible if basic substances are 
present. — Bull Pharm., Detroit, 1906. v. 20. pp. 203-201, 293. 
ACIDUM SULPHURICUM. 
Winteler, F., describes the contact process for the production of 
sulphuric acid as carried out at Niagara Falls, N. Y. — Chem. Ztg., 
Cothen, 1906, v. 30, pp. 8T-90. 
Feigensohn. M., discusses the manufacture of sulphuric acid as 
carried out at the present time. (1) The contact process. (2) The 
chamber process. — Ibid., v. 30. pp. 851-853, 865-86T, 8T9-880. 
Reusch, K., reviews the progress made in the production of sulphuric 
acid during the past year and considers the economic conditions that 
prevail. — Ibid., v. 30, pp. 326-32T. 
Lunge and Berl discuss the chemistry of the lead-chamber process 
for making sulphuric acid. — Ztschr. f. ang. Chem., Berk, 1906, v. 19, 
pp. 881-894. 
Inglis, J. K. H.. presents some observations on the loss of nitre in 
the chamber process of making sulphuric acid. — Oil, Paint, and Drug 
Rep., 1906, v. TO, July 23, p. 16. 
