Ventilation with Air from Superior Layers in Place of Inferior Layers
نویسنده
چکیده
In sanitary inquiries my attention was early directed to instances of layers or strata of air of malarious influence, sucli as this : A medical officer, pointing to a mist, spread like a sheet over a valley, said, " That sheet just covers the bulk of my patients; out of it or above it I have nothing scarcely but midwifery cases and accidents. I have, had instances of children whose heads were above a visible mist
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