360 Dr Davy on Animal Heat 



walked pretty quickly an hour, a gentle perspiration produced, 

 the hands and feet hot, found the latter 99°, the former 98° ; 

 under the tongue 98° ; the urine 101°.5. 



March 20th, at 5^- p.m., open air 42° ; returned warm, after 

 a walk of three hours: the hands, which had worn warm 

 gloves, were 99° ; feet 97° ; under the tongue 98° ; the urine 

 101°.5. 



April 7th, after a walk of three hours in the open air, be- 

 tween 60° and 70°, returned at 5 p.m., gently perspiring : the 

 hands ^vere 94° ; the feet 96°.5 ; under the tongue 98°.5 ; the 

 urine 100°.5. 



May 27th, at 6 J p.m., after a walk of an hour and half, the 

 air 68°, returned slightly perspiring ; the hands were 95° ; the 

 feet hot ; under the tongue 99°. 5 ; the urine 101°.5. 



May 28th, air 65° ; under the tongue before taking exercise 

 98°.5 : after a walk of four hours and a half, gently perspir- 

 ing, under the tongue 98° ; hands 93° ; feet 97°.5 ; urine 

 100°.5 



September 13th, at 4 p.m., the open air on the shore of the 

 Bosphorus 76° ; ascended in about twenty minutes, without 

 stopping, the steep side of the hill, called the Giant's Moun- 

 tain ; on reaching its summit, when profusely perspiring, the 

 pulse was 102°, usually about 52° ; the hands 98° ; under the 

 tongue 98°. The pulse of another individual in company, of 

 about the same age, also profusely perspiring, was 138° ; ther- 

 mometer under his tongue 98° ; and in the hand the same. 

 After descent, the pulse of the former was 94° ; thermometer 

 under his tongue and in the hand 98°.5 ; the pulse of the lat- 

 ter was 112° ; the thermometer under his tongue 98°.5 ; both 

 only gently perspiring. 



What is the inference from these observations % Do they 

 not seem to indicate that whilst moderate exercise promotes 

 the diffusion of temperature and its exaltation in the extre- 

 mities, it augments very little, if at all, the heat of the deep- 

 seated parts \ And considering the blood as the heating me- 

 dium, warmed itself chiefly by respiration, is not this what 

 might be expected, reasoning on the subject? By active 

 exercise, the pulse and the respiration are both accelerated ; 

 more oxygen, it may be presumed, is consumed, more heat is 



