Copenhagen, Kongelige Bibliotek MS. 3498. Paper. Octavo. 15th Century. [Alchemical miscellany, in a number of hands.] 1. [Various alchemical excerpts, gathered by 'Johannes de Prussia Magister totius-artis'.] 2. De croco Martis. 3. Das Werck und Arbeit Arnoldi de Villa Nova von der Materie des Steines [in German but with notes in Latin added.] 4. Practica de compositione Lapidis Philosophorum, nec non Lapidum pretiosorum. 5. Quaestiones tam essentiales quam accidentales Magistri Arnoldi de Villa Nova super compositione Lapidis. 6. Altitudo divitiarum sapientiae. 7. Opus Hermetis, et Liber triginta Verborum in Alchymia.