Temperature of the Human Body in Health, 



209 



After hot-water bath. 



Name. 



Date. 



Fall from 



of 



in 







Jan. 18 



o 



100 



o 



0-6 



37 



minutes. 



Mountain . . 



Dec. 21 



100 



0-6 



13 







Jan. 1 



100 



0-6 



20 



)> 



Rundell .... 



Dec. 21 



100 



0-8 



20 



jj 



Thompson . . 



Dec. 6 



100 



0-6 



25 



J5 



Ryman .... 



Dec. 21 



100-2 



1-0 



57 



ii 





After hot- vapour bath. 







Mooney .... 





99i-4 



0-6 



33 



minutes. 







100 



0-6 



36 



55 







100-4 



1-2 



42 



J> 



Luff........ 





100 



0-6 



15 



»> 







100-4 



0-6 



20 



55 



Can the figures last given be accepted as about the usual rate at which 

 heat is lost by the body in health ? 



"We shall now try to ascertain the source of this increase of body heat 

 under a warm-water or hot-vapour bath. 



Our experiments with vapour-baths afford the more complete solution ; 

 and the following remarks will be limited to them, though it is evident 

 that they will also hold good in the case of hot-water baths. 



This increase in the heat of the body may be due to 



1. Accumulation of heat in the body. 



2. Absorption of heat from the bath. 



3. Both of these circumstances. 



Some of the increased heat was undoubtedly due to an accumulation 

 of heat in the body. 



It is evident that a person in a hot-vapour bath of the temperature of 

 the body, and when breathing the steam, could lose no heat by evapo- 

 ration, or radiation, or conduction, the only means of withdrawing heat 

 from the body. If the production of heat is not diminished pari passu 

 with its loss from the body, then heat will accumulate, and the tempera- 

 ture of the body will be raised. 



Two observations show this to be the case. Thus with Mooney on 

 Jan. 29th and Church on Jan. 22nd the temperature of each respectively 

 was raised to 100° and 100°*4, while the bath was never more than the 

 temperature of their bodies. "We show this in a Table : — 



Name. 



Mooney 

 Church 



VOL. XXVI. 



Temp, of body 

 before bath. 



o 



98-4 

 98-8 



While in 

 bath. 



35 inins. 



24 „ 



Rise, 



100 =1-6 

 100-2 = 1-4 



Temp, of bath. 



97 and 98 

 highest 94 



