copper is mixed with the remainder of silver ; the copper itself , equally with the lead , will be changed partly into litharge and partly into hearth - lead . 19 The silver - lead alloy which does not melt is taken from the margin of the crucible with a hooked bar . The work of “ drying ” is… … A — Cakes . B — Hammer . off the stalactites from the exhausted liquation cakes . They then carry the cakes to the furnace , and put the stalactites upon the heap of liquation thorns . The head of the chipping hammer is three palms and as many digits 19 The first instance given , of 44 centumpondia…
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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_000033125008455038-242-158.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_000033125008455038-463-290.webp)
![An illustration from Cosmographey oder beschreibung aller Länder/ Herrschafften/ fürnem[m]sten Stetten/ geschichten/ gebreüchen/ handtierungen, [et]c. (1574)](https://img.insideoutlibrary.com/img/200/heidelberg-muenster1574-657-1.webp)
