British Library MS. Sloane 75. Paper interspersed with some parchment leaves. Small quarto. 185 folios. 15th Century. Miscellaneous medical and alchemical works. Includes: 1. Roberti de Cisterna. Curae super Viaticum. ff.1-90. 4. Roger Bacon and John de Rupecissa. De quinta essentia tripartus ab aliquibus. ff.99-120. 11. Fragmentum tractatus alchymi de corporibus. f.137. 17. Ramon Lull. Ars operatura. ff.157-161. 18. Ramon Lull. Prologus Monaldi Monachi. ff.162-164. 21. De Lapide philosophorum. f.172. 24. Arnald of Villanova. Epistola ad Jacobum de Toledo. ff.182-184. 25. Ramon Lull. De xvi electuariis. f.183. 26. Ramon Lull. List of works. f.185.