her shift when he has made an extra thirty . At the same time that he pours the copper - lead alloy into the copper mould , he also pours water slowly into the top of the mould . Then , with a cleft stick , he takes a hook and puts its straight stem into the molten cake . The hook itself is a digit… … A — Furnace in which “ slags ” are re - smelted . B — Furnace in which copper is ALLOYED WITH LEAD . C — DOOR . D — FORE - HEARTHS ON THE GROUND . E — COPPER moulds . F — Rabble . G — Hook . H — Cleft stick . I — Arm of the crane . K — The hook of its chain .
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![An illustration from Ova Paschalia sacro emblemate inscripta descriptaq[ue] (1635)](https://img.insideoutlibrary.com/img/200/ia-ovapaschaliasacr00sten_0-468-0.webp)
![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_000033125008455038-427-275.webp)
![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_000033125008455038-156-103.webp)
