231 



continued perfectly natural, but anxiety and oppres- 

 sion then came on : the pulse was 144. When the 

 clothes were stripped off, the air at 212 was more 

 disagreeable for five or six minutes, until a profuse 

 perspiration breaking out, gave instant ease : the 

 breathing during this experiment was not oppressed, 

 partly because the pulse was eight beats less in a mi- 

 nute, and partly because the experiment was made 

 with an empty stomach, and the former with a full 

 one *. Dr Dobson also went into a stove heated to 

 224, and felt no oppressive sensation of heat, al- 

 though every metal about him became speedily hot : 

 a porter remained twenty minutes in the stove when 

 heated to 210, and, on leaving it, the pulse beat 

 164 in a minute, and the animal temperature rose 

 only to 101.5 f. M. Tillet has observed, that girls 

 accustomed to attend an oven, have hprne, for ten 

 minutes, a heat equal to 280 Fahrenheit J. 



187. Other animals, when exposed to intense 

 heats, exhibit similar phenomena. A bitch, of a mo- 

 derate size, was put into a room heated to 220 ; in 

 ten minutes, she panted and held out her tongue, 

 but shewed no other sign of distress. After remain^ 

 ing in the room half an hour, when the heat had ri- 

 sen to 2S6, the basket in which she had been con- 

 fined, was opened, and its bottom was found wet 

 with saliva. The thermometer being placed in her 

 flank, fell to 110, only nine degrees above the na- 

 tural standard heat : and when turned into the cool 



* Philosophical Transactions, 1775. f Ibid. 



Mem. Acad. 1761% 



P4 



