Leiden MS. Vossianus Chym. Q. 33.
200 folios. Paper. 198x158mm. 16th Century [before 1533.]

1. f1-12 [Guillaume de Pavie], Lilium floris de spinis evulsum.
2. f12v-23v Veridicus de lapide magno [?]
3. f24 Enigmata de merucrii operatione.
4. f25-28v Pseudo Duns Scotus, Disputatio de opere lapidid philosophorum.
5. f29-31 XIII regulae alchimiae.
6. f31-33r Geber, De investigatione magisterii [extracts.]
7. f33v-37v Rasis, Summa perfecti magisterii [extracts.]
8. f37v-40 [Prohemium in librum Baconnis], De Naturis metallorum et transformatione ipsorum.
9. f40v-44v Frater Elias, De elixir ad album er rubeum.
10. f45-58v Antoine de Châtillon, Liber Montis speculi ad Philippum ducem Burgundiae.
11. f59-64v Arnold of Villanova, De secretis Naturae.
12. f64v-67 Arnold of Villanova , Verbum Abreviatum.
13. f67-69 Raimon Lull [?], Aphorismi.
14. f69v-72v Pseudo Raimon Lull, Disputatio cum monarcho.
15. f73-77v Pseudo Raimon Lull, Epistola accurtacionis.
16. f78-87 Pseudo Raimon Lull, Apertorium parvum.
17. f87v-93r [Recipes in Latin.]
18. f93v-106v Pseudo Raimon Lull, Anima Artis.
19. f107-111v Pseudo Raimon Lull, Elucidarius (Testamenti).
20. f112-116 [Recipes.]
21. f116-121v [Recipes and formulae.]
22. f122-129v Arnold of Villanova, Liber de vita philosophorum.
f23. 130-134v De lunaria.
24. f134v-135 [Recipes.]