Effect of a High Artificial Temperature on Man. 65 



ness. The men employed here in removing coal, of which it 

 is a receptacle, seldom remain beyond twenty, or at farthest 

 twenty- five, minutes. 



1. A healthy man, 24 years of age, who had been employed 

 about the fires three hours, and during the last quarter of an 

 hour was in this hot atmosphere, had his temperature tried 

 just on leaving it. Under the tongue it was 100*5 ; in the 

 closed hand 98*9 ; his pulse 112, and strong. He had on 

 trousers and shoes, was otherwise naked, and his skin was wet 

 with sweat standing in drops, or running off in small streams. 



2. After exposure to the same temperature for about 14 

 minutes, dressed as usual, I found the temperature under my 

 tongue 99*5 ; of the closed hand 98-5 ; the pulse 83* ; the re^ 

 spirations 16. There was profuse perspiration ; no uneasy 

 sensation. After exposure of about 25 minutes, sweating pro- 

 fusely, and still without any decided unpleasant sensation, the 

 temperature under the tongue was found to have risen to 100*2 ; 

 of the hand to 99*9 ; the pulse to 102, and the respirations to 

 18. It may be mentioned, that an hour before, after walking 

 gently for about half an hour, exposed to the wind at 80°, the 

 temperature under the tongue was 98° ; of the closed hand 98° ; 

 the pulse 60 ; the respirations 15. 



3. The chief-engineer, a robust healthy man, about 30 years 

 of age, who had been below nearly two hours seeing to the 

 engines, but not in the hottest parts, was the n«xt subject of 

 observation, after exposure of 25 or 26 minutes to a temper- 

 ature of 111°. His temperature under the tongue was 102*3 ; 

 of the closed hand 100 ; his pulse 142, and not feeble. He 

 was profusely sweating. He said he had no uneasy sensation. 



4. The last subject of observation was a man about 2b years 

 of age, active and healthy, who had been exposed to the high 

 temperature more than a quarter of an hour, and elsewhere to 

 a less high temperature about two hours. His temperature 

 under the tongue was 101° ; of the hand 100° ; his pulse 102. 

 He was profusely sweating. 



It may be worthy of mention, that when resting in my cabin 

 after this exposure, on making a deep inspiration and expira- 

 tion, a sensation of cooling was experienced in the region of 

 the lungs, contrary to what is felt, according to my experience, 



