This excellent little monograph, although written in Spanish, is easily understood and presents an excellent résumé of the authors' experience with "purulent meningitis." In this term is included Hemophilus influenzae, pneumococcic, meningococcic, streptococcic and Salmonella meningitis. The authors used the sulfonamides, penicillin and streptomycin. Their mortality from influenzal meningitis was 27.7 per cent, from pneumococcic meningitis, 27.7 per cent, from meningococcic and streptococcic meningitis none, from Salmonella meningitis (1 case) 100 per cent and from that caused by undetermined organisms 20 per cent. Considerable space is given to the use of streptomycin in meningitis, and a separate chapter is on the exclusion of intrathecal therapy. The bibliography is complete for both Spanish and American authors.