There are comparatively few conditions that offer the clinician more formidable problems than do the various types of bacterial meningitis. It is true that the diagnosis of inflammations of the meninges does at times tax diagnostic acumen, but repeated examination of the spinal fluid will, in most instances, clarify the situation. However, the major problems and those which cause the greatest concern are such as pertain to treatment. Many authors, at various times, have suggested different forms of therapy; this alone indicates that the therapeutic management of meningitis has been far from satisfactory. Even the cases of cerebrospinal fever, for which are employed rather potent specific antiserums and antitoxins, result in many fatalities. The records of all cases of bacteria-incited meningitis treated in the Charity Hospital during the last ten years have been reviewed in order to determine the distribution of the etiologic types, the various therapeutic procedures employed and