The spontaneous discharge of cerebrospinal fluid from the nose was first positively established as a pathologic possibility by St. Clair Thomson1 in 1899. Since the publication of his monograph, reports of a considerable number of cases have appeared in the literature, although it is still regarded as an exceedingly infrequent condition. It has long been known that cerebrospinal fluid may escape from the ear after fractures of the base of the skull or following operations during which the inner ear or subdural space has been opened, but the literature dealing with spontaneous cerebrospinal otorrhea is apparently meager. Canfield,2 in 1913, reported a case of escape of cerebrospinal fluid and pus from the ear with no history of trauma, but the condition was preceded by pain in the ear for six weeks and impaired health for six months. The report of the autopsy was as follows: A plastic basal