Ut etiam in ferro animadvertimus, quod, quamvis natura sit durum, in fornacibus ab ignis vapore percalefactum ita mollescit, uti in omne genus formae faciliter fabricetur; et idem, cum molle et candens refrigeretur tinctum frigida, redurescat et restituatur in antiquam proprietatem.
Moreover, we see the same thing in iron, which is hard by nature, and yet when it is heated through in furnaces, by the vapour of fire becomes so soft that it is easily fashioned into every kind of shape; and when, being soft and red-hot, it is chilled and steeped in cold water, it hardens again and is restored to its previous character.
final_alignments\Vitruvius_Architecture_Book_1.json