EFFECTS OF HEAT ON THE ANIMAL ECONOMY. 215 



XII. 



Experiments on the Effects produced by a high Tempera- 

 ture on the Animal Economy: by F. F. Delaroche, 

 of Geneva. 



{Concluded from p. 149.,) 



Sect. II. Of the Degree of Heat Man is capable of 

 supporting. 



JL HYSIOLOGISTS have paid much more attention to the Experiments of 

 effects of beat on man, than to those it produces on other & £" Relied 

 animals. The extremely interesting experiments of Drs. 

 Fordyce and Blagden leave little to be desired on this head : 

 yet I thought it not amiss to repeat some of them, in order 

 to determine whether other individuals would be able to en- 

 dure heat as well as those gentlemen. For this purpose 

 Mr. Berger and I shut ourselves up in a room heated by a 

 stove, our bodies being naked, and defended from the radi- 

 antheat by a linen screen. We estimated the temperature 

 by a thermometer hung against the wall, four feet nine in- 

 ches- from the floor. 



Experiment I. 

 Temperature of the room at the beginning - 189° -5 Fahr. Temp, from 



at the end - - 194 189-5 to 194* 



I entered the room at ------- 3h. 17m. 8 minutes, 



I left it at - - - 3h. 25m. 



Weight of my body when I entered - 1281b. lloz. 3gr. loss in weight 

 ten minutes after I came out - 1281b. 5oz. 

 On entering I felt pretty sensibly the impression of the Other effects 

 hot air, but without being inconvenienced. In four minutes 

 a few drops of sweat appeared on my forehead. In five 

 minutes all my body was covered with a copious perspira- 

 tion. At this time I began to feel a little weakness, and 

 difficulty of breathing, which continued to increase, and 

 obliged me to quit the room. 



Experiment II. 

 Temperature of the room at the beginning - 194°. From 194° to 



at the end - - 189° -5. m° ■:->, 



Mr. 



