Dr Davy on Animal Heat. , 359 



was 97°, the feet and hands cold, in the urine it rose to 101'' ; 

 and on the 28th of July, when under the former it was 99°.5, 

 in the latter it was the same. 



Do not these observations, besides tending to confirm the 

 preceding conclusion, for which they were brought forward, 

 viz. that the temperature of the body rises and falls in a per- 

 ceptible manner with the temperature of the air, lead also to 

 the further conclusion, that the tendency of a high tempera- 

 ture of atmosphere is to raise the temperature of the surface 

 and of the parts adjoining the surface, in a somewhat higher 

 ratio than the deep-seated organs ; and of a low temperature 

 of atmosphere to raise the temperature of the deep-seated 

 parts, whilst that of the surface is subjected to undue reduc- 

 tion from the cooling agencies to which it is exposed, directed, 

 as it were, in both instances, for a beneficial result, on the 

 principle of compensation 1 



4. On the Effect of Exercise on the Temperature of the Body. 



This subject of inquiry, notwithstanding its manifest im- 

 portance, has been much neglected ; indeed, I do not know 

 of any work in which any precise information is to be obtain- 

 ed respecting it. 



The observations which I have to offer are fewer than I 

 could wish, and more limited ; they were made at Constanti- 

 nople in 1841, at intervals between February and August, 

 and had for their object mainly to endeavour to determine 

 the effect of moderate exercise in walking, on the temperature 

 of the body. The individual on whom they were made was 

 the same as was mentioned in the last section. The particu- 

 lar observations are the following : 



February 19th, at 1^^ p.m., air of room, 60° ; before walking, 

 feet cold, temperature between the toes QQ° ; under the tongue 

 98° ; urine 100°. At 5^ p.m., open air 40° ; just returned from 

 a walk, gently warmed by the exercise ; feet and hands warm ; 

 the former 96°.5, the latter 97° ; under the tongue 98° ; urine 



lor. 



March 2d, at 4^ p.m., open air 50° ; air of room ^Q>°', feet 

 and hands moderately warm ; the former 75°, the latter 81° ; 

 under the tongue 98° ; urine 100°. At 5i p.m., after having 



