BOOK VIII . 340 … A — Launder . B — Interlacing fir twigs . C — Logs ; three on one side , for the FOURTH CANNOT BE SEEN BECAUSE THE DITCH IS SO FULL WITH MATERIAL NOW BEING washed . D — Logs at the head of the ditch . E — Barrow . F — Seven - pronged fork . G — Hoe . The third method of washing materials of this…
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![An illustration from Georgii Agricolae De re metallica : libri XII. Quibus officia, instrumenta, machinae, ac omnia deni[que] ad metallicam spectantia, non modo luculentissimè describuntur, sed & per effigies, suis locis infertas, adiunctis latinis, germanicis [que] appellationibus ita ob oculos ponuntur, ut clarius tradi non possint. ; Eiusdem De animantibus subterraneis liber, (1556)](https://img.insideoutlibrary.com/img/200/ia-gri_000033125008455038-442-282.webp)
