check, the coldnefs wont to be pro* 

 duced in water by that Salt > yet 

 putting the mixture into common 

 water, there enfuedj as we expect- 

 ed, an intenfe degree of Heat* 

 And I remember, that having fub- 

 linvd the forementioned Salt in di- 

 ftinft Veflels, with the Filings of 

 Steel, and with Filings of Copper, 

 and for curiofities fake kept one of 

 the Caput moYtuums ( for I cannot 

 certainly call to mind which of the 

 two it was, ) divers moneths , (if I 

 miftake not, eight or nine,) we at 

 length took it out of the VefleU 

 wherein it had been kept carefully 

 ftopt 5 and^ upon trial 5 were not de- 

 ceiv'd in having expefted that all 

 that while the difpofition to give 

 cold water a notable degree of Heat 

 was prefervedinit. 



PX- 



