Caption:
Collecting gold with animal skins on a water source, Skins are placed in ponds of springs to collect gold particles that are in water, woodcut, p. 263, (Liber octavus), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica libri XII: quibus officia, instrumenta, machinae, ac omnia denique ad metallicam spectantia, non modo luculentissime describuntur, sed & per effigies (...). Basileae: [Froben], 1556.