14 ffif tfte. »c|>am'cal ^tgtne of 



EX PER. XL 



Nd though good Aqua, Fortis be 

 the mofb generally employed 

 qf corrofive Menftruums ^ as being 

 capable of diflblving or corroding, 

 pot oaely many Minerals , as Tin- 

 glafs. Antimony, Zmke^&c. but all 

 Metals except Gold, ( for, though it 

 jpiake not a permanent Solution of 

 grade Tin^ it quickly frets the parts 

 afunder^and reduces it to an immak 

 teable fubftance 3 ) yet to (hew, how 

 Wuch the power of corroding may 

 be taken away by changing the Me-^ 

 dianical Texture of a Menftruurn, 

 <?ven without feeming to deftroy 

 the fretting Salts* I pra&isd ( and 

 Qommuaicated to divers Virtuosi} the 

 following Experiment ? elfewhere 

 mentioned to other purpofes. 



We took equal parts of good dj : 

 qfis If orth •, and highly dephlegm'd 

 Spirit of Wine , and having min- 

 gled them warily and by degrees, 



( with- 



