THIS is a most satisfactory text-book for the student. It is up to date, the theoretical principles underlying the various methods are clearly and accurately stated and the conditions for carrying out individual exercises are given in ample detail. To each chapter there is a useful résumé in the form of graded problems, and answers are provided to the numerical ones.
a Theoretical Approach. By Prof. William Rieman III., and Dr. Jacob D. Neuss. (International Chemical Series.) Pp. ix+425. (New York and London: McGraw-Hill Book Co., Inc., 1937.) 18s.