df^eat anD CotD* pi 

 EX PER., xxir. 



T Hough common Sea* fait does 

 ufiially ipipart fome degree, 

 though not an intenfe one, of Cold- 

 nefs unto cpmmon water (!> during the 

 aft of Diffolution } yet fome Trials 

 have informed me , that if it Were 

 caft into a competent quantity of 

 Oyl of Vitriol., there would for the 

 mod part infue an Incalefcence^ 

 which yet did not appear to fucceed 

 fo regularly $ as in moft of the fore- 

 going Experiments. But that Heat , 

 (hould be produc'd ufually, though 

 not perhaps conftantly , by the a- 

 bove-named Menftruum and Salt, 

 feems therefore worthy of our notice, 

 becaufe 'tis known to Chymifts, that 

 common Salt is one main Ingredient 

 of the few that make up common 

 faftitious Sal Armoniac > that is 

 wont to be fold in the Shops. And 

 I have been inform'd , that the ex* 

 cellent Academians of Florence have 

 G ob~ 



