This excellent summary of the radiologic management of actinomycosis describes the results of treatment of 52 patients observed since 1915 in Radiumhemmet, in the Roentgen Institute of the Serafimer Hospital and in the private practice of Dr. G. Forssell. The following lesions were encountered: those of the face and neck in 31 patients, of the abdomen in 13, of the thorax in 3, of the skin in 2, of the genital region in 1 and of undetermined origin in 2. The form of treatment has varied, but currently it consists of roentgen therapy, the application of molded plaques containing radium needles or exposure to a radium bomb, or téleradium. In this series of cases these various technics were employed singly or in diverse combinations. Roentgen therapy was effected by repeated exposures, totaling one skin erythema dose, daily or on alternate days over a period of from three to twelve days.