Abstract
THE Journal of the Society of Arts of February 9 contains a paper by Messrs. Leonard Hill and Martin Flack on “The Influence of Ozone in Ventilation.” The authors point out that whilst it is not legally permissible for the carbonic anhydride in the air of a factory to exceed a few parts per 1,000, no harm whatever is caused by breathing air containing up to 4 per cent, of this gas. A similar statement applies to deficiency of oxygen, which does not become important until the proportion falls to 14 or 15 per cent. These conclusions are quite in accord with the fact that, on account of the dead-space separating the lungs themselves from the open air about one-third of the air drawn into the lungs is re-breathed; it is thus quite impossible that a few parts per thousand of carbonic anhydride in the outside air should affect the lungs, in which the percentage is normally about 5 per cent.
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Ozone and Ventilation . Nature 89, 72 (1912). https://doi.org/10.1038/089072a0
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DOI: https://doi.org/10.1038/089072a0