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De re metallica (1912)

Agricola, Georg, Hoover, Herbert · leaf 378

An illustration from De re metallica, 1912, leaf 378
BOOK VIII . 334 … A — Tray . B — Bowl - like depression . C — Handles , Sand mixed with particles of gold is also washed in a tray , or in a trough or bowl . The tray is open at the further end , is either hewn out of a squared trunk of a tree or made out of a thick plank to which side - boards are fixed , and is…

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