I dressed his wound, and God healed it! modestly exclaimed Ambrose Pare, and his trite saying contains a truth too often forgotten in theory, and overlooked in practice. No remedy cures. The utmost we are able to do for any disease is to remove, as far as possible the cause, and allow natural forces to carry on the various processes of repair, and the rational treatment of diphtheria whether situate in the fauces, nose, larynx or trachea should include surgical cleanliness as far as it can be attained. Primarily, we must have correct hygiene; secondarily, nourishment, and lastly, drugs. The selection of a well ventilated room, isolation of the patient, absolute confinement in bed, fresh air and sunshine, the toilet, frequent changes of linen, immediate destruction of soiled cloths, thorough disinfection of the fauces, nose, throat and mouth, should not give place in any stage to internal treatment. Few facts