G—The forehearth crucible: one-half inside is to be seen open in the other furnace.
Then the same assistant throws a little powdered charcoal into the pit of the forehearth and sprinkles it with pulverised earth.
Then the stannum runs out of the furnace into the forehearth; this is an alloy of lead and silver.
At the first stands the smelter, who with a ladle pours the alloy out of the forehearth into the moulds.
When the alloy has been poured out of the forehearth, the smelter foreman and the mine captain weigh the cakes.
Afterward, when the tap-hole has been opened, they flow into the forehearth and mix there with the molten lead.
By this method the lead contained in the forehearth absorbs the silver, and the silver-lead is taken to the cupellation furnace.
L—The master stands at the other furnace and prepares the forehearth by ramming it with two rammers.
In this method the molten lead in the forehearth absorbs the silver.
One half of the latter consists of copper and silver, and it settles to the bottom of the forehearth.