Emanuelis Swedenborgii ... Regnum subterraneum sive minerale de cupro et orichalco : De que modis liquationum cupri per Europam passim in usum receptis : de secretione eius ab argento : de conversione in orichalcum inque metalla diversi generis : de lapide calaminari: de zinco : de vena cupri et probatione eius : pariter de chymicis praeparatis et cum cupro factis experimentis &c. &c
A 1734 Latin metallurgy treatise by Emanuel Swedenborg on copper and brass, printed at the expense of Friedrich Hekel, with its pictures being repeated letterpress ornaments: decorative headpieces and tailpieces of scrolling acanthus, swags and a shell motif, cut as woodblocks. A designer could take from them the Baroque cartouche vocabulary of symmetrical scrollwork, drapery festoons and grotesque masks, useful for period-style frames and borders.
