and penetrant, being freed from the 

 earthy, aqueous and feculent parts, 

 which Diftillation difcovers to be in 

 the expreft Oyls 4 you may boil Salt 

 of Tartar twenty times as long 

 without making any. Soap of them, 

 or perhaps any fenfible Solution of 

 the Alkaly. And Chymifts know^' 

 how difficult it is , and how unfuc- 

 tefsfully 'tis wont to be attempted to 

 diflblve pure Salt of Tartar in pure 

 Spirit of Wine , by digefting the 

 not peculiarly prepar'd Salt in the 

 cognate Menftruum. I will not urge,, 

 that ^ though the mod confpicuous 

 mark of Sulphur be inflammability, 

 and is in an eminent degree to be. 

 found in Oyl as well as Sulphurs 

 yet an Alkaly and water which are 

 neither fingly , nor united inflam* 

 friable , will diffolve common Suh 

 phur. 



C 2 EX* 



