227 



a hen hatching eggs to 108 *. Mr Hunter also 

 found the heat of the hen to raise the mercury from 

 103 to 104, when introduced within the rectum ! 

 184. But the degree of heat in animals varies, not 

 only at different times under a change of circum- 

 stances, but also in different parts of the same ani- 

 mal, where all the circumstances continue the same. 

 Some examples of this fact have already been inci- 

 dentally mentioned as occurring in different animals. 

 Under the tongue of a man, Mr Hunter found the 

 degree of heat to be 97 : at one inch within the u- 

 rethra, 92 : at two inches 93 : at four inches 94 : 

 and at the bulb 97. The heat of the rectum in the 

 same man was 98.5. In the mouse, when the at- 

 mosphere was 60, the mercury in the thermometer 

 stood in the pelvis at 96.8, and at the diaphragm 

 99. In the rectum of a dog, the temperature was 

 10O.5 : in the liver, 10O.7 : and in the right ven- 

 tricle of the heart and stomach, it was exactly 101 J. 

 The temperature of a horse, killed by dividing the 

 spinal marrow and large blood-vessels, was, in the 

 colon, 98 : in the stomach 101 : and in the spleen 

 103, according to Mr Carlisle, when the atmosphere 

 was at 30. The urine of the same animal was 97, 

 and the flowing blood 103. The water flowing 

 from a tapped person was 101, but, at the surface, 

 the temperature was 96, the atmosphere at the time 

 being 43 . From these facts, it is plain, that eve- 



* On Thermometers, p. 147. 

 f Observations an the Animal (Economy, p. 103. 

 t Ibid. p. 94. et scq. 

 Philosophical Transactions, 1805, p. 22. 

 P2 



