This is the second revision of this well-known work. The revision committee was composed of the following well-known members of the American Pharmaceutical Association: C. Lewis Diehl, A. B. Stevens, C. T. P. Fennel and Chas. Caspari, Jr. Most of the articles, or at least a large portion of them, should have been included in the U. S. Pharmacopeia, but even then we suppose as some sort of a supplement to the Pharmacopeia. In this edition the formulas of such preparations as were dropped from the last Pharmacopeia have been included. The decimal system of weights and measures has been introduced, and the work is now, in the language of the committee, " abreast of the times." We commend it to the profession.