Point VI

Much Silver may be separated from Bismuth, the Bismuth preserved, a Secret agreeing to those places which abound with that Mineral.

This Secret is not of so little weight as perhaps it will seem to some; for no Man even to this day hath proved this in the matter it self and with effect, yet seeing that it may easily be done, viz. in this manner, melt Chalcitis in a Crucible, and cast upon it successively so much Nitre, until all the Chalcitis shall pass into Scoria, or green Glass, pour out the Mass into a Cone, then the Silver will settle to the bottom in form of a Regulus, which was contained in the Chalcitis, then put the Scoria of the Chalcitis into a Crucible and melt them well for the space of an hour, so all the Chalcites will be revived, rendred Corporeal, and a little will be lost. He therefore that can make the Salt-peter himself, and needs not to buy it at a dear rate, will hence reap great profit, otherwise not; however it proveth that the Salt of the Earth can perform what is here attributed to it.