De Re Metallica (On the Nature of Metals)

Based on the document provided, here is a summary of the publishing history for De Re Metallica On the Nature of Metals:

Latin Editions

• Basel Folio: 1556, 1561, 1621 (Ludwig König), and 1657 (Emanuel König).
• Other mentions: The text notes that some bibliographers mention an octavo edition in Schweinfurt (1607) and an octavo edition in Wittenberg (1612 or 1614), though the authors express doubt regarding the existence or accuracy of these entries.

German Editions

• Vom Bergkwerck On Mining, Basel (Froben), folio, 1557.
• Bergwerck Buch Mining Book, Frankfort-on-Main (Sigmundi Feyrabend), folio, 1580.
• Bergwerck Buch Mining Book, Basel (Ludwig König), folio, 1621.
• Other mentions: John Ferguson’s bibliography lists editions for Basel (1657, folio) and Schweinfurt (1687, octavo), which the authors categorize as unconfirmed.

Italian Edition

• L’Arte de Metalli The Art of Metals, Basel (Froben), folio, 1563.

Other Languages

• The authors state that the work was never officially published in other languages.
• They note a potential confusion regarding a historical ledger entry from 1560 referencing a "correction of Agricola’s De Re Metallica On the Nature of Metals in French," which they suggest may actually refer to the Italian edition.
• There is also a mention of a Spanish manuscript of the work.