The modern soap and detergent industry including glycerol manufacture. Volume I. By Geoffrey Martin, D.Sc., Ph.D., F.I.C., Industrial Chemist and Engineer; Late Director of Research of the Coöperative Wholesale Society Ltd. of Manchester; Director of Research of the Portland Cement Research Association; Author of “Industrial and Manufacturing Chemistry,” “Oils, Fats and Waxes,” “Perfumes and Essential Oils,” “Dyestuffs and Coal Tar Products,” etc., “Salt and Alkali Industry,” etc. Price, $10.00. Crosby Lockwood and Sons, London, 1924. D. Van Nostrand Company, N.Y.