English: Page 158 from De re metallica libri XII : quibus officia, instrumenta, machinae, ac omnia denique ad metallicam spectantia, non modò luculentissimè describuntur, sed et per effigies, suis locis insertas, adjunctis Latinis Germanicisq́ue appelationibus, ita ob oculos ponuntus, ut clariùs tradi non posint : quibus accesserunt hac ultimâ editione, tractatus ejusdem argumenti, ab eodem conscripti, sequentes ... con indicibus diversis, quicquid in opere tractatum est, pulchrè demonstrantibus / ... Georgii Agricolae Kempnicensis Medici ac philosophi clariss. ... by Georgii Agricolae . Basileae : Sumptibus et Typis Emanuelis König, Anno 1657. In the late 15th and early 16th centuries capital-intensive new technologies made central European mines vastly more productive. Potential investors wanting to familiarize themselves with the industry created demand for richly illustrated mining and metallurgy treatises such as Agricola's.