Of the Cold produced by Evaporating Fluids, and of some other Means of producing Cold; by Dr. WILLIAM CULLEN Professor of Medicine in the University of Glasgow

Of the Cold produced by Evaporating Fluids, and of some other Means of producing Cold; by Dr. WILLIAM CULLEN Professor of Medicine in the University of Glasgow. A Young Gentleman one of my pupils, whom I had employed to examine the heat or cold that might be produced by the solution of certain substances in spirit of wine, observed to me: That, when a thermometer had been immersed in spirit of wine, tho' the spirit was exactly of the temperature of the surrounding air, or somewhat colder; yet, upon taking the thermometer out of the spirit, and suspending it in the air, the mercury in the thermometer, which was of Fahrenheit's construction, always sunk two or three degrees. This recalled to my mind some experiments and observations of M. de Mairan to the same purpose; which I had read some time before. See Dissertation sur la glace, edit. 1749. pag. 248, & seq. * May 1. 1755.