and P^oDuttton of Wlolatilify* 3 7 

 terous , but a patient diftiller. 



But now as to the making a fixt 

 Alkaly of Tartar become Volati), I 

 take it to be another, and have found 

 it to be a far more difficult, work ; the 

 common Proceffes of performing it 

 being work to promife much more 

 than they can make good 5 which I 

 may juftly fay of fome other, that 

 private men have vaunted for great 

 Arcana, but upon triall havefatisfied 

 me fo little^ that I have divers times 

 offered pretenders to make Salt of 

 Tartar Volatil , that without at all 

 inquiring into their ProceflesJ would 

 lay good wagers, that they could not 

 doe what they pretended* not onely 

 as divers Philofophical Spagy rifts re- 

 quire,without any vifible additamenr, 

 but by any additament whatever 5 

 provided I were allowed to bring the 

 Salt of Tartar my fdf^and to examine 

 the Succefsj not by what may appear 

 in the Alembic and Receiver, but 

 by the weight of what would remaio 

 i& the bottom. For I have convin- 

 ce^ fome of the more Ingenuous Ar- 

 ] £ 3 tifts^ 



