Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
Regnum minerale, generale et speciale, quorum illud naturalem et artificialem mineralium productionem cum parallelismo alchymico verorum philosophorum, tractatibus hucusque ineditis, commentario super Introitum Philalethae etc. candide sistit; olim sub nomine Regni quarti sulphurum fixorum metallicorum promissum. Hoc vero metalla ... sulphura, terras, quin & acidulas, thermas ... practice recludit / [Emanuel König]. Public Domain Mark. Source: Wellcome Collection.