t 463 1 
XLV. Experiments in an heated Room, By Matthew 
Dobfon, M. D. In a Letter to John Fothergill, M, D, 
F. R. S. 
DEAR SIR, Liverpool, April 25, 1775. 
Redde,^june 22, 'F PERUSED with particular pleafure, your 
fhort account of the curious experiment 
made by Mr. banks and Dr. solander. The fame, 
and fome additional experiments, have been made here; 
the refult of which I fliould fooner have tranfmitted to 
you, had I not been prevented by the conlfant engage- 
ments of my profeffion. 
EXPERIMENTS, 
I. The fweating-room of our Public Hofpital at Liver- 
pool, which is nearly a cube of nine feet, lighted from 
the top, was heated till the quicldilver flood at 224° on 
Fahrenheit’s fcale, nor would the tube of the thermome- 
ter indeed admit the heat to be raifed higher. The ther- 
mometer was fufpended by a firing fixed to the wooden 
frame of the flcy-light, and hung down about the cen- 
tre of the room. Myfelf and feveral others were at this 
time inclofed in the flove, without experiencing any op- 
preflive or painful fenfation of heat, proportioned to 
the degree pointed out by the thermometer. Every me- 
tallic about us foon became very hot. 
VoL. LXV. Q qq II. My 
