The Sincerely Discovered Art of Assaying and Refining of the Venetians

continues from previous page in a new, sealed pot, and mix the powder afterward with a little Venetian glass, so the silver separates, and it does not harm the lead.

Burn verbena, or bee-wort, to powder, or cut that into the melted ore, so you see what it bears, silver or gold.

6. To melt all kinds of ore.

Take a pound of ore, much or little, and beat it to powder, onto the cupel; afterward take the ore, and then again powder, and make it into the ore until it becomes full, and seal it at the top. Afterward, make a gentle fire under it, hold it until the smoke becomes blue underneath. When you see it, take tongs and lift the cupel out, and make a pit, and pour it into it.

7. To make an ore flowing.

Take steel filings, pound them to powder, and clean them. Add to it sulfur, lead, melt and rub it until it becomes powder, and mix into it

which are all made into powder.