EditorialExtraction of vitriol from soil_2, Pieces of vitriol earth are dissolved in water, then the solution is boiled, the precipitated vitriol is made liquid and filled into pots, woodcut, p. 464, (Liber duodecimus), Manuel, Hans Rudolf (graveur sur bois), 1...
EditorialExtraction of vitriol from soil_1, The earth is dissolved in water and copper settles on the ground., The solution is then boiled, woodcut, p. 463, (Liber duodecimus), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica lib...