GQ&o&bmtteoz QopoGtiUtPf XJ 



ex per. vir. 



THe Tra& about Salt-peter, that 

 gave occafion to the/e Anno- 

 tation^ may furnifti us with an emi- 

 nent Inftanceof the Produ&ion of 

 Solvents. For, though pure Salt- 

 peter it fclf, when diffolv'd in water^ 

 is not obferv 9 d to be a Menftruum 

 for the Solution of the Metals here- 

 after to be named, or fo much as of 

 Corjil it felf j yet ,. when by a con- 

 venient Diftillation its parts are fplit r 

 if I may fo fpeak 3 and by Attrition, 

 or other Mechanical ways of work- 

 ing on them j reduced to the fbapes 

 of Acid and Alcaliiate Saks 5 it then 

 affords two forts of Menftruums of 

 very differing natures , : which be- 

 twixt them Biffblve or corrode a 

 great number and variety of Bodies 5 

 as the Spirit of Nitre without addi- 

 tion is a Solvent for jnoft Metals, as 

 Silver, Mercury , Chopper, Lead, &c G 

 and alfo divers Miperal Bodies T | as 

 B 2 Tin- 



