Atmospheric environment and health, by Leonard Hill; Note in regard to indoor and outdoor humidity, by John R. Weeks; Note in regard to primary cause of colds, by John R. Weeks; Climate and health, with special reference to United States, by Robert DeC. Ward, author's abstract; Comparison of temperature and humidity during 1920, with mean and their relation to comfort, at Anaconda, Mont., by C. D. Demond; Relation of malaria to temperature.

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