1714

Fahrenheit’s thermometer becomes available, and Herman Boerhaave and his pupils Gerard van Swieten and Anton de Haen noted its value. van Swieten recommended that it, rather than the hand, be used to measure fever, whereas de Haen pointed out that a physician’s touch was inadequate, especially when a shivering patient complained of extreme coolness while registering a temperature that was three or more degrees above normal (Grodzinsky & Levander).