Aids to the Analysis and Assay of Ores, Metals, Fuels, &c.

Abstract

THIS little book is intended for the use of students and others to whom the more expensive standard works on analysis and assaying are inaccessible. It is entirely devoted to quantitative, estimations, and some two hundred methods are concisely described. It contain the assay of the ores of gold, silver, copper, lead, tin, zinc, iron, manganese and chromium, and the estimation of the impurities usually met with in these metals. There are also sections devoted to the analysis of fluxes, refractory materials, slags, fuels, &c., and of white alloys, iron alloys and copper alloys. This enumeration is enough to show that an enormous amount of ground is covered, and in such a small book there is, of course, no room to explain the principles on which the directions are based. The directions themselves, however, are clear and generally accurate. Among the mistakes and omissions which have been noticed, the neglect to re-oxidise the lead reduced by the filter-paper in the ignition of lead sulphate and an erroneous method of calculating the gold contained in ores may be mentioned. The modern method of adding zinc acetate instead of soda and acetic acid in the iodide copper assay is not mentioned, and electrolytic methods generally are ignored. The book should be useful to students in polytechnics and other evening schools.

Aids to the Analysis and Assay of Ores, Metals, Fuels, &c.

By J. J. Morgan Pp. viii + 105. Students' Aids Series. (London: Bailliere, Tindall and Cox, 1902.) Price 2s. 6d.