London, Wellcome Institute MS. 631. 65 folios. 125x95mm. Mid 17th Century. 1. ff1-7 [Alchemical recipes in Italian, some headings in Arabic and Armenian script.] 2. ff9-22 [Alchemical recipes in Italian with a few in latin, some with headings and paragraphs in Armenian script.] 3. ff23-52 Josephus Quercetanus [Duchesne]. Diverses expériences copies [sic] des manuscrits de feu Monsieur de la Violette [i.e. Quercetanus]. 4. ff52v-end [Alchemical and other recipes, in French, Italian and Latin, on written entirely in Armenian script.]