636 ANIMAL HEAT 



Tissues. 



Brain ... - 40 C 



Liver - - 40 -6-40 -9 



Subcutaneous tissue 2-1 lower than 

 that of subjacent muscles (man). 

 Anterior chamber of eye - - 3i 

 Vitreous humour - 36 



Cavities. (Man.) 



Axilla - 36-3-37'5 C. (97'3-99'5 F -)- 



Rectum - - 36-37-8 



Mouth - - 37-25 



Vagina - - 37*5-38 



Uterus - - 37*7-38-3 



External auditory meatus - 37-3-37-8 



Bladder (temperature of the 



escaping urine) - - 36-0-37-5 



Respiratory Passages. (Horse.) 



Air fMiddle of nasal cavity - - 23-4 C. 



temperature, -j ,, trachea - - 32*4 in inspiration. 



4*5 c - I - 34*4 in expiration. 



Natural Surfaces* 



Cheek (boy, immediately after running) - 36-25 



Anterior surface of forearm - 33*5-34*4 



Posterior ,, ,, - 34-0 



Skin over biceps - 35-0 



,, ,, head of tibia - - 31*9 



immediately below xiphoid cartilage - 34*7 



over sternum - - 33 '2 



On hair (boy) - - 30-0 



Under hair over sagittal suture (boy) - 33- 7-34-0 



Shaved skin of neck (rabbit) - - 36-5 



On hair ,,,,,, - - 31-5 



,, between eyes ,, - 3*7 



Artificial Surfaces. 



Room I Surface of trousers over thigh - - 23'7-287 



temperature, 1 coat over arm 



j o ,, waistcoat - - - - - 26-0 



Normal Variations in the Temperature. The internal tempera- 

 ture, as has been already said, is not strictly constant. It varies 

 with the time of day ; with the taking of food ; with age ; to some 

 extent with violent changes in the external temperature, such as 

 those produced by hot or cold baths; and possibly with sex. On 

 the average the range of variation in the temperature of the rectum 

 or urine of a healthy man is from 36-0 C. (96-8 F.) to 37-8 C. 

 (100-0 F.). 



In the monkey a very distinct and constant diurnal variation has 

 been observed, and the range is much wider than in man (as much 

 as 5-4 F.), the maximum falling between 6 and 8 p.m. and the 

 minimum between 2 and 4 a.m. (Simpson). 



(Man) 



Room 



temperature, 



.0 



