In considering the subject of tetanus we are struck by the fact that it is a disease that has been recognized for centuries, widely diffused throughout the world, found during all periods of life save the first five years, excepting the primary month; varying in mortality, age incidence, occurrence during the season of the year, and susceptibility of the sexes; a disease having an extensive literature, the data of which as to frequency, mortality, and prognosis are singularly indefinite and unsatisfactory, giving rise to conclusions and statistics both unreliable and confusing. The error, according to my judgment, is due in large part to the persistent disregard of certain clinical characteristics and natural tendencies of the disease as exhibited in incubation, progress, and duration, unmodified by any treatment whatsoever.Recovery from tetanus once developed is to-day, as in the past, due more to the character of the attack than to the