the test , and soon two twig basketsful of charcoal . Then he blows in air with the bellows . This bellows is double , and four feet two palms long , and two feet and as many palms wide at the back ; the other parts are similar to those described in Book VII . The nozzle of the bellows is placed in… … A — Grate . B — Brass block . C — Block of wood . D — Cakes of silver . E — Hammer . F — Block of wood channelled in the middle . G — Bowl full of holes . H — Block of wood fastened to an iron implement . I — Fir - wood . K — Iron bar . L — Implement with a hollow end . The implement which has a…
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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_000033125008455038-375-253.webp)
![An illustration from Description abregée des principaux arts et metiers et des instrumens qui leurs sont propres. Le tout détaillée par figures / [Anon]. (1743)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b30409482-161-1.webp)
