For more than eleven years I have been treating pneumonia patients in cool fresh air, gradually placing their beds nearer and nearer the open window. Last winter I put them out on the roof. It is not always practicable to make use of a roof, but what I have to say about the beneficial effects of open-air treatment is founded mainly on last year's experience at the Presbyterian Hospital, New York City. It comprises experience in all months of the winter.
Our systematic practice was to put all pneumonia patients during the day, for six hours, on the roof, in the open air, in all weather in which harsh high winds, rain and snow did not prohibit. Indeed, the patients were not always brought in for little sprinkling rains or trivial snowfalls, and many times were out when high snow banks formed a corral about the space in which the