The invasion of the central nervous system by the mold Actinomyces is rare. Ford1stated in 1937, "There are now 40 cases on record in which the nervous system has been invaded by the ray fungus. All reported cases have been fatal; no treatment is of any value." Friedman and Levy2after an extensive review of the literature found that 108 cases had been reported. Two more cases of actinomycotic meningitis have been added to the literature since this report3(1941). When the disease attacks the central nervous system, it is universally considered to be 100 per cent fatal. No case of recovery has as yet been reported. Actinomycosis occurs in the central nervous system usually as a direct extension of an infection about the head; i. e., the upper jaw, the sphenoid sinuses or the mastoid. The nasopharynx has been suspected, as a possible sourceof the