91 
An abstract (from Apoth. Zt g., 1905, v. 20, p. 932) discusses the 
purification of hydrochloric acid by treatment with strong solution 
of vanadous chloride. — Abstr. Pharm. J., Lond., 1905, y. 21, p. 910. 
Kebler, Lyman F., found hydrochloric acid containing free chlo- 
rine. — Proc. Am. Pharm. Ass., 1905, v. 53, p. 182. 
Burke, W. J., examined 25 samples of diluted hydrochloric acid; 
2 were practically of the U. S. P. strength, 10 below, and 13 above ; 
ranging from 8.5 to 13.3 per cent. — Proc. Massachusetts Pharm. Ass., 
1905, p. 106. 
Ferguson, W. C., publishes a table of specific gravities of hydro- 
chloric acid varying in composition from 5.73 to 42.57 per cent of 
HC1. — J. Soc. Chem. Ind.. Lond., 1905, v. 24, p. 786. 
Kiister and Muench publish a table designed to facilitate the prepa- 
ration of normal hydrochloric acid solutions, based on the specific 
gravity of the acid used. — Ber. d. deutsch. chem. Gesellsch., 1905, 
v. 38, pp. 150-152. 
Neumann, A. (Pharm. C. H., 1905, No. 40), figures and describes 
an apparatus designed for the demonstration and the estimation of 
hydrochloric acid in stomach content, particularly when the latter 
is available in but small quantities. — Pharm. Ztg., Berlin, 1905, 
v. 50, p. 927. 
ACIDUM HYDROCYANICUM DILUTUM. 
Herting, Otto, discusses some of the tests given in the U. S. P., 
VIII, and recommends hydrogen peroxide as an efficient antidote in 
case of poisoning. — Deut.-Amer. Apoth. Ztg., 1905, v. 26, p. 142. 
Guerin, M. G., discusses the methods proposed by Liebig and by 
Fordos and Gelis for the titrimetric estimation of hydrocyanic acid, 
and proposes a modification which consists essentially in the addition 
of a solution of sodium borate to the hydrocyanic acid containing 
liquids before titrating with silver nitrate. — J. de pharm. et de chim., 
Paris, 1905, v. 22, p. 433. 
IVeehuizin, F., discusses phenolphthalin as a reagent for hydro- 
cyanic acid (Pharm. IVeekblad, 1905, v. 42, pp. 271-272) : 
If an alkaline solution of plienolplitlialin, together with a 1 : 2000 solution of 
copper sulphate be added to a solution of hydrocyanic acid a red coloration is 
produced in the cold, the phenolphthalin being oxidized to phenolphthalein. A 
perceptible coloration is produced in a solution containing 1 : 500000 hydrocyanic 
acid. — Abstr. J. Soc. Chem. Ind., Lond., 1905, v. 24, p. 562. 
McDowall (Chem. News, v. 89, p. 229) outlines a method for the 
determination of hydrocyanic acid in cyanides by the use of an am- 
moniacal solution of copper sulphate. The disappearance of color is 
sharp and the presence of chlorine is without influence. — Abstr. J. 
Am. Chem. Soc., 1905, v. 27, p. 1340. 
