EditorialHollowed tree trunk is used for gold washing, A long hollowed out tree trunk is buried in the bottom of a stream to gain gold, rarely used, woodcut, p. 268, (Liber octavus), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metalli...
EditorialGoldwaschen, Woodcut to the end of the gold washing from the 16th century, Fig. 1, p. 44r, 1598, Lazarus Ercker: Beschreibung allerf?rnemisten mineralischen Ertzt unnd Bergkwercks Arten, wie dieselbigen, und eine jede in Sonderheit, jrer Natur und Eyge...