Leiden MS. Vossianus Chym. F. 39. 229 folios. Paper. 300x205mm. 16th Century. 1. f1-198 Isaac Holandus, De lapide philosophorum [in German.] 2. f199-200 [Alchemical poem in German.] 3. f200-225 Philosophi Rosarium [in German.] 4. f225 [Poem in German.] 5. f226 [Recipes, extracted from the works of Paracelsus.]