Lewis W. Leeds,
Germantown, Pa.
7th mo. 26th, 1867.
The subjoined are a few of the Letters received from prominent Sanitarians and others.
Office of the Superintendent of Health,
Providence, August 5, 1867.
Friend Leeds.
Your Lectures on Ventilation have been received. I am much interested in them, and think the views given are correct. I hope they will be widely circulated. Too much cannot be said to the people upon the subject.
Ventilation is all-important. Indeed, I think that if the air could be constantly kept in motion, the worst sources of impure air in our cities would be rendered almost free from danger.