EXPER. VL 



'/• ■ "*Is known that Salt-peter be* 

 1/ ing put into common water 

 produces a fenfible Coldnefs in it, as 

 it alfo does in many other Liquors : 

 But that the fame Salt put into a Li- 

 quor of another Constitution may 

 have a quite differing effeft, I have 

 convinced fome inquifitive perfbns by 

 mingling eight ounces of fine Salt- 

 peter powder'd with fix ounces of 

 Oyl of Vitriol : For by that com- 

 mixture with a Salt that was not 

 only a&ually, but 5 as to many other 

 bodies., potentially cold, the Oyl of 

 Vitriol^ that wasfenfibly cold before, 

 quickly conceived a confiderable de- 

 gree of Heat, whofe Effects alfo be- 

 came vifible in the copious Fumes 

 that were emitted by the incalefcent 

 Mixture. 



EX- 



