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)
44 3 DE RE ME TALENCA einde uenæ profundæ nõ parum inter ſe differunt in diuidendo : ſiqui dem alia aliam tranſuerſa ſecat : alia ali obliquè diffindit & quaſi decuſſat . Vena principalis „ ein tranſuerſa B . Vena principalem oblique diffindens . C . … Qudd ſi uena , quæ alteram principalem obliquè diffindit , durior quàm ipſa fuerit : per eam penetrat non aliter ac cuneus faginus uel ferreus inſtru mento aliquo percuſſus per lignum molle : ſi mollior , eam principalis uel ſe cum rapit ad pedes tres , aut ad paſſum unũ , duos , tres , plures ue t…
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