66 ANIMALCULA OF INFUSIONS. I, 



portable. Coinciding with Boerhaave's fenti- 

 ments, it is commonly believed, we cannot exi t 

 in an atniofphere warmer than blood-heat. So 

 that illuftrious philofopher concluded, becaufe 

 he faw certain birds and quadrupeds die at 

 149°, which is 50° more than human blood (i). 

 This opinion is ill founded ; fmce there are coun- 

 tries inhabited where the atmofpherical heat is 

 greater than that of our bodies. Thus, in Apa- 

 mea and the Cape of Good Hope, it is 113° in 

 the {hade (2) ; to which the natives mull be ex-, 

 pofed. In Carolina, it furpalTes that of the human 

 body ; for the thermometer falls when taken 

 from the air in the fhade and put in a perfon's 

 mouth (3). In warm baths, we are fometimes 

 fubjeded to more heat than in the hotted cli- 

 mates. Certain waters are 113°, and others fo 

 much as 120^ (4). 



There is the lame fimilarity in the facb related 

 of cold to thofe related of heat. Boerhaave 

 thought the utmofl degree of cold that could 

 happen was zero in Fahrenheit's thermometer, 

 or i4|-° below freezing by Reaumur's ; at 

 which, he remarks, men, animals, and vege- 

 tables foon perilh. Experience proves that, in 

 different parts of the globe, cold is greater. Ac- 

 cording to what the Parifian academicians relate, 



in 



(i) Chemia. Tom. 1. (2) Cap. 4. 



(3) Haller, Phyfiolog. T. 2. (4) Kaller, ibid. 



