of #eatanD€olDt 6$ 



EX PER- XL 



TO confirm this Experiment 

 by a notable variation ; wc 

 took finely powder'd Sal Armoniac^ 

 and filings or fcales of Steel 5 and 

 when they were very diligently mixt 

 ( for that Circumftance ought to be 

 obferv'd ) we caus a them to be 

 gradually fublim'd in a glafsveflel, 

 giving a foiort fire towards the latter 

 end. By this Operation fo little of 

 the mixture afcended , that 3 as we 

 defired , far the greateft part of the 

 Sal Armoniac ftaid at the bottom 

 with the metal 5 then taking out the 

 Caput mortuum 5 I gave it time 

 throughly to cool ^ but in a Glafs 

 well ft opt, that it might not imbibe 

 the moifture of the Air (as it is 

 very apt to do. ) And laftly, 

 though the Filings of Steel , as well 

 as the Sal Armoniac , were bodies 

 a&ually cold 5 and fo might be 

 thought likely to increafe 5 not 



checks 



