104 HcemaJ}atic$. 
than that of the Stove ; whence its fuddcii 
Tendency to Putrefadion, the Oils, Salts and 
Spirits of the Dog being thoroughly putrified 
in twenty eight Minutes. 
33. He obferves alfo that when a Man 
breathes an Air as hot as his natural Hear, he 
foon finds fuch a Difficulty of Breathing, that 
he cannot long endure it, but earneftly pants 
after cooler Air, which invigorates, while hot 
Air* weakens and difpirits 5 for neither Animals 
nor Plants can long bear a hot Air, without 
Intervals of cool refreffiing Air. 
34. Whence he juftly infers, that as the 
Blood is moft heated in the Lungs, by 
reafon of the great Velocity and Fridion 
it there undergoes, fo it is there alfo moft 
refrigerated. Element a Chemia Tom. I. 273 
to 278. 
35. And p. 378, he obferves that 
the natural Heat of the Blood is not far from 
the coagulating Point, which is a hundred 
Degrees, and the natural Heat ninety two : 
Whence it may be concluded that a Fever 
Heat muft tend to coagulate the Blood; in 
order to refill which Tendency, Nature is 
then under a Ncceffity of greatly accelerat- 
ing its Motion thro* the circulatory VelleJs, 
which. 
