Silver with a bare Solution of conw 

 mon Salt made in common water. 

 And whereas both Spirit of Salt and 

 Silver diflblv'd in Aqua Forth will 

 each of them apart readily diffolve 

 in fimple water, our tuna Cornea not 

 onely will notdofo, but is fo icdif- 

 pos'd to Diflblution, that I remem- 

 ber I have kept it in Digeftion, fome 

 in Aquafortis^ and fome in Aqua Re- 

 gia and that for a good while , and 

 in no very faint degree of heat, with-* 

 out being able to diflblve it like a 

 Metal , the Menftruums having in- 

 deed ting d themfelves upon it , but 

 left the Composition undiffolv'd at 

 the bottom. 



With this Inftancc (of which fort 

 more might be afforded by Chymical 

 Precipitations) f fhall conclude 

 what I deiignM to offer at prefent 

 about the Corrofibility of Bodies 3 as 

 it may be confider'd in a more ge- 

 neral way. For as to the Difpofi- 

 tioa that Particular Bodies have of 

 being diffolved in 5 or of refitting, 

 Determinate Liquors, it were much 



eafier 



