358 Dr Davy on Animal Heat. 



the same individual. The subject of them was of middle age, 

 in good health, under whose tongue the thermometer com- 

 monly was stationary at 98°, when neither suffering from 

 heat nor cold. The place where they were made was Con- 

 stantinople, — the climate of which capital, it may be observ- 

 ed, is exceedingly variable, — often cold in winter and the 

 early spring, and commonly very hot in summer, — ^liable to 

 great vicissitudes from its situation on the confines of two 

 seas, in regard to warmth very different in character during 

 a great part of the year. The observations were begun early 

 in March, and were continued at intervals till the latter end 

 of July. During this time the thermometer in the open air 

 ranged from 31° to 94°, and the temperature observed under 

 the tongue from 97° to 99°. 5. It may not be amiss to men- 

 tion some particular instances. 



On the 5th of March, after having been exposed several 

 hours in an open boat on the Bosphorus, with a strong wind 

 at 43°, the thermometer placed under the tongue stood at 97°. 



On the the 11th of the same month, when the ground was 

 covered deeply with snow, and the thermometer in the open 

 air at 7 a.m. was 31°, and in a bed-room 45°, the temperature 

 under the tongue was found to be 97°. 5. 



On the 3d of April, when the thermometer in the room, 

 with the window open, was QQ,°, under the tongue it was 

 98°.5. 



• On the 17th of July, when the thermometer was 87°, under 

 the tongue it rose to 99°.5. On the 21st of the same month, 

 when the air was 87°, the temperature under the tongue was 

 99°.5 ; and on the 28th, when the former was 94°, the latter 

 was 99°. 



During the hot weather of July, it may be deserving of re- 

 mark, that the pulse was less affected than the respiration, 

 which, habitually about sixteen in the minute, was now com- 

 monly fourteen, and one day did not exceed twelve. 



It may also be mentioned that attention was paid to the 

 temperature of the extremities, and also to that of the urine, 

 and that commonly it was found of highest temperature when 

 the tongue and extremities were of lowest temperature : thus, 

 on the 5th of March, when the thermometer under the tongue 



