London, Wellcome Institute MS. 117. 281 pages + 51 folios. Vellum. 165x105mm. 15th Century [1462.] [Collection of alchemical and medical works, tracts on the virtues of stones, medical receipts, etc. Copied from a MS. belonging to Bisticius, A Florentine silversmith and physician, by Bartholomaeus Marcellus.] 1. pp1-103 Bartholomaeus de Ripa Romea. De lapidibus. 2. pp104-110 Zael. Liber sigillorum. 3. pp110-206 J. de Rupescissa. De consideratione Quintae Essentiae. 4. pp207-240 R. Lullius. Ars operativa. 5. pp240-248 Bisticius. Receptae. 6. pp248-258 Pseudo - St. Albertus Magnus. De secretis philosophorum. 7. pp258-261 F. Ariosto. Superadditio dictis [ Rupescissae.] 8. pp261-278 J. de Rupescissa. Liber lucis. 9. pp229 Petrus de Abano. De venenis.