Industrial Electrochemistry

THE first edition of Dr. Mantell's valuable work has been thoroughly revised and brought up to date, and has grown by some 130 pages in the process. The text has been rewritten almost entirely, so much so that it may be asked whether the author has not taken unnecessary trouble in this respect, since quite large portions of the present version are mere paraphrases of the original.Industrial ElectrochemistryBy Dr. C. L. Mantell. (Chemical Engineering Series.) Second edition. Pp. x + 656. (New York and London: McGraw–Hill Book Co., Inc., 1940.) 38s.