Wolfenbüttel, Herzog-August-Bibliothek MS. August 3586. [55. 7. Aug. 4to.] 121 folios. Paper. 180x135mm. 15th Century. 1. f1-10 St. Thomas Aquinas. Tractatus de Lapide philosophorum. 2. f11-44 Liber de vera arte Alkimie. 3. f45-46 [Alchemical receipes.] 4. f47-78 Liber rosarii philosophorum, i.e. Thesaurus thesaurorum philosophorum abbreviatus [Divided into two books, the first being the 'theorica' and the second the 'practica'.] 5. f79-83 Descrittione d'un elixir universale. [In French.] 6. f87-121 Liber chymicus ex lingua Latina in linguam Italicam versus. [In Italian.]