The latest edition of the British Pharmacopoeia made the 1949 edition of the Codex obsolete; hence this new edition. As in the past, it includes many of the nonofficial, as well as the official, drugs used in the British Empire. Despite the fact that 69 new substances and 84 new formulations were added, so many of the less-used drugs and formulations were dropped that the book is 200 pages shorter than its predecessor. The work is divided into the following main sections: general monographs (on active ingredients); antiserums, vaccines, and related substances; preparations of human blood; formulary (giving directions for the extemporaneous compounding of such drugs as are sold in bulk); appendixes (covering reagents and tests); and an index. While much of the material concerns pharmacists, e. g., solubility, purity, and compatibility, physicians will have use for the short, critical paragraphs on pharmacology and therapeutics, the lists and descriptions of