438 



VARIATIONS OF THE MEAN TEMPERATURE. 



index of the heat of the body at different ages, but it is possible that 

 other unknown influences also are active. 



Newly-born Animals exhibit peculiarities owing to the sudden 

 change in their conditions of existence. Immediately after birth, the 

 infant is O3 warmer than the vagina of the mother, viz., 37'86. A 

 short time after birth, the temperature falls 0*9, while 12-24 hours 

 afterwards, it has risen to the normal temperature of an infant, which 

 is 37'45. Several irregular variations occur during the first weeks 

 of life. During sleep, the temperature of an infant falls 0'34 to 0'56, 

 while continued crying may raise it several tenths of a degree. 

 Old people, on account of their feeble metabolism, produce little heat ; 



[* Indicates taking of food.] 



