Metals and metallic compouonds. By U. R. Evans, M.A. Vol. I. Introduction, Metallography, Electro-Chemistry. Pp. xii+468. Price 21s. Vol. II. Metals of the ‘A’ Groups. Pp. xi+396. Price 18s. Vol. III. The Transition Elements. Pp. xii+270. Price 14s. Vol. IV. Metals of the ‘B’ Groups. Pp. xii+350. Price 18s. London: E. Arnold & Co., 1923