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The editor says in the preface to this volume that "the radical changes introduced in the last edition of the United States Pharmacopœia has necessitated the rewriting of the entire descriptive part of the materia medica." The National Convention of 1890 instructed its committee on revision to employ the metric system of weights and measures, and the committee say (page 33) that "as directed by the convention the committee has in most cases employed definite weights for solids and measures for liquids in terms of the metric system," but the book continues to use the old British system in giving the doses of medicines. Many of the "definitions," or rather examples, cited in the opening chapter are properly subject to adverse criticism, for example, "Empirical Therapeutics.—Therapeutics based upon clinical experiences only, e.g., the use of mercury for syphilis." This is news to carry to those experimenters who have spent so
Materia Medica, Pharmacy, Pharmacology and Therapeutics.. JAMA. 1894;XXIII(13):516. doi:10.1001/jama.1894.02421180034013