AND ON MYSELF. 847 



circulation of the body, it is capable of resisting 

 the influence of external cold for a longer time? 

 Hence it is that the Russians sometimes roll 

 themselves while naked in the snow, after leaving 

 the vapour bath, which they could not do with 

 pleasure and impunity, if not thus previously 

 heated, by which the circulation through the 

 lungs, and consequently, the process of respira- 

 tion, are afterwards augmented, especially if a 

 bucket of cold water be thrown over the indivi- 

 dual on coming out of the bath, so as to reduce 

 his temperature to something like the natural 

 standard. 



At twenty-five minutes after twelve o'clock of 

 the same day that Mr. Hopkins went into the bath, 

 he noted down the results of the following experi- 

 ments on myself. The temperature of the air was 

 46 out of doors, that of the mouth under the 

 tongue was 99, and the pulse 75, when I entered 

 a bath at 104. In ten minutes, the temperature 

 in the mouth had risen to 102, and the pulse to 

 88, at which they remained twenty-five minutes. 

 The bath was then raised to 110; five minutes 

 after which my own temperature rose to 104, and 

 the pulse to 118, where they remained for ten 

 minutes longer, when I left the bath in a very 

 feeble condition. After walking half a mile, and 

 dining at three o'clock on mutton chops with 

 bread and potatoes, the temperature under the 

 tongue was 100*5 or 1*5 higher than before going 



