Consumptives used to get well in the Alleghenies. Once in a while, it was accidental, of course, for in those days night air was not considered a suitable medium of respiration. Consumptives used to get well every little while in the Michigan and Minnesota woods. By that time, a few invalids were leaving their windows up, with window-boards inserted to keep out drafts. Quite a lot of the consumptives who went to the Rocky Mountains recovered, returned East and died a few years later. Others recovered, remained in the West and lived out their lives there. Those who remained West continued sleeping with wide-open windows. Those who got better and went back East found public opinion too strong for them, and closed the windows on cold and damp nights. On the coast recovery became a general rule. By that time, the night air was freely inspired. In the arid Southwest, almost everybody got well, because it wasn't necessary to live in a house at all, practically.

At home all over the country now it is a disgrace to die of tuberculosis. The disease is one that has a strong tendency toward spontaneous healing, if you give it a show. The open-air life, in town or country, on mountain or in the valley, is curing thousands of cases everywhere. The essentials of cure are very simple. (1) a doctor who attends regularly and throughout the illness: (2) open-air day and night the year around; (3) all the sunlight available or endurable; (4) rest; (5) wholesome food in reasonable variety; (6) graded exercise, under strict regulation by the doctor, according to the conditions in  Cases which give peace of mind.
(locutions and Antwerp). 