Summary

Lewis W. Leeds Lectures on Ventilation — Article

The ventilation of the latrines or water-closets of a hospital, as well as any other place, is a matter of great importance.
In the spring of 1863, I had put up in a hospital in Washington a ventilating shaft for the latrine room, similar to the one shown on the plans. This was an experiment, but it proved so satisfactory that it was subsequently ordered to be applied in all the principal hospitals.
Source: Wikisource

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