To make sal alkali.
TAke the ashes of leese of wine burned, quick lime, of eche equall quantitie, and put them into three stillitorie glasses one ouer another, to the intent that that which falleth frō the one may distill into the other: then power the water of the lower most into the vppermost, hauing a pot leaded vnderneth. Put often tymes the same lye thorowe it vntyll the ashes be no more bitter. Let the same lye stande a night, and seeth it in the morning in a pot leaded vntill the water con∣sume awaye and become harde. Then let it coole, you shall finde a stone in it called Alkali, the which you shall beate in pouder, and fyll a newe pot with it half full, and couer it not, & put it in a forneise of calcination, makinge at the firste a little fier vntill it seeth: then a great fier vntill it begyn to melt like lead, then power it quickly into another pot, and let it coole, and it will be sal Alkali, which you must kepe in a glasse.