A collection of alchemical texts by Christophorus (or sometimes in this manuscript “Christofalus”) Parisiensis. Despite his name, Christophorus Parisiensis (Christopher of Paris) was likely Italian, possibly from…

This manuscript includes two texts by notable Catalan philosopher, theologian, and mystic of the High Middle Ages, Ramon Llull (Ramon Llull or Raimundus Lullus; 1232-1316), Ars brevis, and Ars abbreviata praedicandi.
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This is a seventeenth-century copy of a fifteenth-century translation and re-working of the Rosarius Philosophorum, one of the most important texts in the corpus of alchemical works that circulated under the name of…

Copy of an early text from the Pseudo-Lullian alchemical corpus, assembled before the sixteenth century from two independent manuscripts. This manuscript is noteworthy for its illustrations, tables, figures, and…

The Testamentum Theorica is the earliest work in the Pseudo-Lullian Alchemical corpus, a large collection of as many as 143 different texts that circulated as the work of Raymond Lull (Ramon Llull or Raimundus Lullus;…

The Liber de secretis naturae seu de quinta essentia is the central work in the Pseudo-Lullian Alchemical corpus, a large collection of as many as 143 different texts that circulated as the work of Raymond Lull (Ramon…

This is one of only six known complete manuscripts of a 14th-century alchemical treatise; all the extant manuscripts date from the 15th century or later. This copy includes lengthy contemporary glosses, possibly…