376 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS larger than the second devotes cons.iderably more space and dis- cussion to chromatographic and extraction separations and several new colorimetric reagents. In the chapters on specific meth- ods, more extraction and chromato- graphic procedures are included. Newer methods have been added and old methods brought up to date. More specific applications of meth- ods have been included. This volume of selected methods remains an outstanding contribution to analytical chemistry and a valua- ble addition to any analyst's library. --S. R. KRAus, Bristol-Myers Prod- ucts Div., Bristol-Myers Co.

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