34 Of t$e $9ttt)anical SDngitte of 



EXPE&. XVII. 



BUt to make it probable againfi 

 the Chymjfts , ( for I propofe 

 it but as an argument ad hominem ) 

 that the Solution of Sulphur in ex- 

 preft Oyls depends upon fomewhat 

 elfe betides the abundance of the fe- 

 cond Principle in both the bodies 5 

 Iwilladdeto what I faid before, an 

 affirmation of divers Chymical Wri- 

 ters thcmfelvesj who reckon Aqua 

 Regis^ which is plainly a Saline Men- 

 ftruum, and diflblves Copper^Iron, 

 Coral, &c. like Acid Liquors, a-* 

 mong the Solvents of Sulphur, and 

 by that power among other things 

 diftinguiCh it from Aqua Fortis. And 

 on the other fide \i^ there be a Con- 

 gruity betwixt an exprcft Oyl and 

 another body, though it be fuch as$ 

 by its eaiit DiiYolubieuefs in Acid 

 Salts, Ghymift* (hould pronounce to 

 be of a laiine oaturt $ an e>prtft 

 Oyl will teat ily enough work o^on 



it, 



