Georgii Agricolae De re metallica libri XII : qvibvs officia, instrvmenta, machinae, ac omnia denique ad Metallicam spectantia, non modò luculentißimè describuntur, sed et per effigies, ... (1561)
Verum halinitrũ conficitur ex terra ſicca & ſubpinguit q ; fi aliquantulũ in ore retincatur , guſtatũ ſalſedine , cum acrimonia quadã permiſta , cõmouet . Ea terra & puluis miſtus altitudine palmi , alternatim ponantur in cupis : pul uis iſte habeat duas portiones calcis uſtæ & aqua non reſtinctæ ,…
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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_000033125008455038-469-296.webp)
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