CUTANEOUS RESPIRATION IN MAN

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Abstract
In experiments on 5 subjects, when the skin was surrounded by air containing approximately 8.5% CO2, a condition of equilibrium was established. When the concentration was diminished, CO2 passed from the skin into the air; and when the concentration was increased, then CO2 passed from the air into the skin. O2 was absorbed by the skin even when the air contained less than 0.5%. Under no conditions was the passage of O2 from the skin into the air observed. The avidity of the skin for the O2 of the air at tensions as low as 3 or 4 mm. Hg indicates that the skin under normal conditions utilizes the 0 available from this source in addition to that supplied by the blood. The rate of 0 absorption decreases progressively as the CO2 tension of the air increases.

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