332 Dr. Marcet on the Temperature of the Human Body at 



does not appear to have a marked influence on the temperature 

 of man while at rest. Thus, 



Temperature of the body at Chamounix, 1050 metres, I a£.o 

 before breakfast j 



Same experiment another day 36*3 



At the " Cabane des Grands Mulets," 3050 metres, be-\ „., 

 fore breakfast ... J 



At the summit of the "Col du Geant/' 3362 metres,! „„ 

 after eight minutes' rest and fasting .... J 



'& — * www " o 



At the Grand Plateau (Mont Blanc), 4000 metres, at~l gg 

 rest and fasting J 



On the highest "Bosse du Dromadaire" (Mont Blanc), 1 07.1 

 4672 metres, about 2 h 40 m after breakfast, and at rest J 



In twenty observations made while in the state of rest, at alti- 

 tudes varying from 1050 to 4672 metres, and in various condi- 

 tions as regards the food taken, the temperature of my body 

 varied from 36° to 37°'l, or l°'l only; and it is remarkable 

 that the highest temperature was found at the greatest altitude*. 



Although there exists a comparative degreee of uniformity be- 

 tween the various temperatures observed when at rest, it is worth 

 remarking that the highest can, as a rule, be connected with the 

 circumstance that food had been taken not long previously, or 

 with the fact that the thermometer had been observed while in 

 the act of resting on the way down hill. The six highest readings 

 of the thermometer, with but one exception, may be accounted 

 for in that way; they are as follows : — 



Temp, 

 metres. 



1050 37*1 Chamounix, f of an hour after breakfast. 



3050 37' 1 After arrival at the Grands Mulcts about 2^ hours after 



a full breakfast with meat. 

 4G72 371 Bosse du Droinadaire ; breakfast with meat 2f hours 



before ; then a steep and exciting ascent, but slow 



and without fatigue. 

 1621 37 Fasting, but down hill (Col du Geant), for four or five 



hours. 

 1565 3G-9 Chalet des Chablettes, U hour after full breakfast. 

 3362 36*8 Summit of Col du Geant, breakfast with coffee three 



hours before ; temperature taken after eight minutes' 



rest. 



This last observation, made at the summit of the Col du Geant, 

 appears to be an exception to the rule : the temperature then 



* An observation at Planpraz, showing n temperature of 35 0, 5, is not 

 here taken into account ; it is exceptionally low, which must be owing to 

 some extraordinary circumstance, such as excessive perspiration during the 

 last part of the ascent. 



