A verbal communication from Dr. Hare, respecting some experiments made by him to ascertain the comparative heating or cooling influence of changes of density resulting from changes in pressure in dry air, and air replete with aqueous vapour : also, some experiments favourable to the idea that a vacuum has a capacity for caloric.

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A verbal communication from Dr. Hare, respecting some experiments made by him to ascertain the comparative heating or cooling influence of changes of density resulting from changes in pressure in dry air, and air replete with aqueous vapour : also, some experiments favourable to the idea that a vacuum has a capacity for caloric. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)