Catalog 13: Carrier air washers and humidifiers: applied to public office and industrial buildings, with notes on humidity . ore than if itwere a dry one/* He further states that a humidity up to 88 percent wouldnot be injurious. In an article by Dr. W. M. Wilson of the Weather Bureau,entitled Atmospheric Moisture and Artificial Heating, thefollowing is stated: The evaporation power of the air at a relative humidity of 30 percent is very great, and when the tissues and delicate membranes of therespiratory tract are subjected to this drying process, a correspondingincrease of work is placed upo
Catalog 13: Carrier air washers and humidifiers: applied to public office and industrial buildings, with notes on humidity . ore than if itwere a dry one/* He further states that a humidity up to 88 percent wouldnot be injurious. In an article by Dr. W. M. Wilson of the Weather Bureau,entitled Atmospheric Moisture and Artificial Heating, thefollowing is stated: The evaporation power of the air at a relative humidity of 30 percent is very great, and when the tissues and delicate membranes of therespiratory tract are subjected to this drying process, a correspondingincrease of work is placed upon the mucous glands in order to keepthe membranes in proper physiological condition, so that nature, in hereffort to compensate for the lack of moisture in the air, is obliged toincrease the functional activity of the glands, and this increase of activityand the frequent unnatural stimulation, induced by the changing conditionsof humidity from the moisture-laden air outside, to the arid atmospherewithin our dwellings, finally results in an enlargement of the gland 77 Carrier Air Conditioning Company —? of America .. Carrier Type C Washer Installed in the New England Historicaland Genealogical Building, Boston, Mass. 7S Carrier Air Conditioning Company of America tissues, on the same principle that constant exercise increases the size ofany part of the animal organism. Not only do glands become enlarged,but the membrane itself becomes thickened and harsh, and sooner orlater the surface is prepared for the reception of the germs of disease,which tend to develop under exposure to the constantly changing per-centage of humidity. It might be interesting to notice some remarkable cases which havecome under observation where catarrhal troubles have been relieved andapparently cured by simply introducing sufficient moisture into the airto bring the conditions to something near normal. Drs. Thos. R. Crowder, J. A. Denny, and C. A. Schroyer, as a Committee on the Ventilation of Cars, r
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