The recent comments in The Journal concerning the best climate for consumptive patients, and the necessity for careful discrimination in regard to the extent and stage of progress of the pulmonary disease, as well as to the special qualities of climate, have called forth a letter from Dr. Henry B. Baker, Secretary of the Michigan State Board of Health, which will be found in this number of The Journal under the head of " Domestic Correspondence." The letter calls our attention to his paper read in the Section of Climatology and Demography of the International Medical Congress in Washington, D. C., 1887, in which he claims that dry cold air exerts a controlling influence in the production of all the inflammatory affections of the respiratory passages and parenchyma of the lungs, including pulmonary phthisis.
The facts, statistics and diagrams contained in his paper constitute a valuable contribution, and so far as