16 ANALYTIC SECT. IT. 
continued in that heat for some minutes, the 
dead parts raised the thermometer to 114°, while 
the living raised it no higher than 102}°.” The 
venous blood of the living penis must necessarily 
have carried off a considerable quantity of caloric, 
as all the blood which passed through it, during 
the immersion, would acquire the temperature of 
that organ. If the circulation of the blood had 
been stopped, there is no valid reason to suppose, 
that the living penis would not have been of the 
same temperature with the dead one. 
xv. An atmosphere, heated considerably above 
the temperature of the blood, communicates its 
caloric but slowly to the human body. Sir Joseph 
Banks and Dr. Fordyce remained (without having 
their heat much augmented) fifteen minutes in a 
humid atmosphere at 130°; but if the stay ina 
heated atmosphere be protracted, the animal heat 
may be raised five or six degrees, as hath been 
proved by Messrs. Berard and Laroche. 
xvi. Although 98° of Fahrenheit is regarded 
generally as the healthy natural temperature in 
Britain, yet in some individuals it is lower than 
this in the wiriter season ; and “ every temperature 
of the air above 62°, applied to the human body, 
is found to increase the heat of it.” In tropical 
countries, when the temperature of the atmosphere 
in the shade rises to 90°, the heat of the blood 
