Pseudo-Roger Bacon, with anonymous Liber de duodecim aquis

Late-sixteenth-century manuscript of the Speculum alchimiae attributed to Roger Bacon, followed by an anonymous Italian treatise on twelve powerful waters; the catalogue notes it belongs to a group of Wellcome manuscripts that were once part of one larger volume. Unique manuscript: a handwritten codex held in the Wellcome Library's Western Manuscripts collection, so no second copy of this particular text-witness exists. Digitized by the Wellcome Collection and released under its Public Domain Mark.

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