Note 174 — Introductory material (continued 2)

Noyes, A. A., and Bray, W. C. System of Qualitative Analysis for the Common Elements. Journ. Amer. Chem. Soc., vol. 29, pp. 168, 172, and 191. 1907.

Note.—Barium sulphate is nontoxic on account of its insolubility. Orfila fed 16-24 grams to dogs without causing any disturbance. Bary, A. Beitr. z. Baryumwirkung. Dorpat, 1888, p. 25.