De Re Metallica by George Agricola, 1556. Illustration of Book X. Gold parting. The separating of gold from silver."Agua Valente
De Re Metallica by Goerge Agricola, 1556. Illustration of Book X. Gold parting. The separating of gold from silver."Agua Valente". round hole. of the furnace. opening under it. crucible. spout. ampulla. in which this is usually placed lest it be broken.
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