This compendium has been appearing in new editions at frequent intervals since 1920. It is in essence a short encyclopedia of medicine. Because of the necessity of condensation and the rapid advances in medicine, the book is not completely satisfactory in all respects. Under the heading endocarditis, for example, four types are considered together: rheumatic, syphilitic, bacterial and "indeterminate." Under treatment of "endocardtis" mercurochrome is mentioned as having value, but there is no mention of penicillin. A brief discussion of penicillin, however, is contained in the alphabetical list of drugs which forms part II of the book. As a source for quick though superficial reference this volume continues to have merit.