Details
FAHRENHEIT, Daniel Gabriel (1686-1736). Experimenta circa gradum caloris. In: Philosophical Tansactions. Vol. XXXIII, no. 381, pp. 1-3. [London: Printed for W. and J. Innys, 1724].
4o (215 x 167 mm). Folding engraved plate. (Some pale foxing.) Disbound; quarter morocco folding case.
FIRST APPEARANCE OF FAHRENHEIT'S INVENTION OF THE FAHRENHEIT THERMOMETER. "With his 'Experiments concerning the Degrees of Heat,' Fahrenheit perfected the modern instrument, his principal innovation being a 'fixed point' of departure, namely the temperature to which water can be cooled when mixed with ice and salt. This he called zero. At the ends of his scale were normal human blood-heat--which he took at 96o--and the normal freezing point of water, 32o. When this scale was later extended upwards, the boiling point of water fell at 212o. He may have been the first to use mercury as a thermometric fluid" (PMM). This extract also includes Robert Houstoun's "An Account of a Dropsy in the Left Ovary of a Woman" (pp.8-15), the first treatment of ovarian dropsy by tapping the cyst (Garrison-Morton 6017). PMM 182.
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FIRST APPEARANCE OF FAHRENHEIT'S INVENTION OF THE FAHRENHEIT THERMOMETER. "With his 'Experiments concerning the Degrees of Heat,' Fahrenheit perfected the modern instrument, his principal innovation being a 'fixed point' of departure, namely the temperature to which water can be cooled when mixed with ice and salt. This he called zero. At the ends of his scale were normal human blood-heat--which he took at 96