ft 2 Imperfection of tUe €tymi®& 



Quality^ as 5 for infbnce, of Sulphur 

 to be fufible, and therefore we are 

 not to exact a Reafon why it is foj 

 though* I could fay much by way of 

 anfwer, 1 (hall now 6oly obferve,that 

 this Argument is grounded but upon 

 a fuppofition, and will be of no force, 

 if from the primary affections of bo- 

 dies one may deduce any good Me- 

 chanical Explication of Fufibility in 

 • the general-, without oeceflarily fup- 

 pofing fuch a Primigemal Sulphur, 

 as the Chymifts fancy, or deriving 

 it from thence in other bodies* And 

 Indeed, fince not only Salt- peter, Sea 

 fait, Vitriol and Allum, but Salt of 

 Tartar^and the Volatile Salt of Urine 

 are all of them fuftble $ I do not well 

 lee, how Chymifts can derive the fu- 

 fiblenefs even of Salts obtained by 

 their own analyfu ( fuch as Salt of 

 Tartar and of Urine) from the par- 

 ticipation of the Sulphureous Ingredi- 

 ent f efpecially fince ^ if fuch an at- 

 tempt fhould be made, it would over- 

 throw the Hypothecs of three Simple 

 bodies^ whereof they will have all 



jnixf 



