Leiden MS. Vossianus Chym. F. 20. 402 folios. Paper. 324x204mm. 16th Century [1574.] 1. f1-21v Morienus, Liber de compositione alchimiae [in German.] 2. f21v Robert du Val, [Poem of six verses.] 3. f22-43 Bernard Trevisanus, Responsio ad Thomam de Bononia, 1484 [in German.] 4. f44-47 Pseudo Arnold of Villa Nova, Semita recta [in German.] 5. f49-53v Arnold de Villa Nova, Novum lumen [in German.] 6. f54-55v Arnold de Villa Nova, Epistola super alchymia ad regem Neapolitanum [in German.] 7. f56-88 Clangor Buccinae [in German.] 8. f89-93v Pseudo Aristotle, Practica lapidis philosophici [in German.] 9. f96-98 Allegoriae super turba philosophorum [in German.] 10. f98-101 Aenigma ex visione Arislei philosophi et allegoriis sapientum [in German.] 11. f101-110 In turbam philosophorum exercitationes [in German.] 12. f111-130v Aurora consurgens [in German.] 13. f132-141 Liber secretorum Calidis filii Iazichii [in German.] 14. f145-154 Rosinus, Ad euthesiam [in German.] 15. f154v-158 Rosinus, Ad sarratantam episcopum [in German.] 16. f158-166v Rosinus, De divinis interpretationibus [in German.] 17. f166v-168v Rosinus, Liber definitionum. 18. f168v-169 Rosinus, Liber divinarum interpretationum et definitionum [in German.] 19. f170-177v Avicenna [?], Liber octo capitulorum de lapide philosophorum [in German.] 20. f178-191v Scala philosophorum sive gradus scalae philosophorum [in German.] 21. f193-204 De secretis chimia [in German.] 22. f205-275 Pseudo Raimon Lull, Theorica testamenti [in German.] 23. f275v-294v Pseudo Raimon Lull, Practica testamenti [in German.]3 24. f295-336 Pseudo Raimon Lull, Codicillus sive Vademecum [in German.] 25. f337-351 Pseudo Raimon Lull, Compendium animae transmutationis [in German.] 26. f352-374v Pseudo Raimon Lull, Testamentum novissimum, liber primus [in German.] 27. f375-395v Pseudo Raimon Lull, Testamentum novissimum, liber secundus: practica [in German.] 28. f395v-397v Pseudo Raimon Lull, Elucidatio testamenti [in German.] 29. f398-400 Pseudo Raimon Lull, Lux mercuriorum [in German.] 30. f400 [Two recipes from Lorentz Zatzer.]