Leiden MS. Vossianus Chym. Q. 9. 209 folios. Paper. 215x158mm. 16th Century [before 1541.] De Alchimia; De Urina [all in German.] 1. f9-21 Pseudo Albertus Magnus, Semita recta. 2. f21v-26 Alphabetum philosophorum. 3. f26v-70v Operationes alchimicae. 4. f71-? [Additions to these preceding operations, made by various scribes.] 5. f?-123 Collectio medicamentorum. 6. f126-142 De urina. 7. f142-173 Collectio medicamentorum. 8. f173-210 [Additions to this preceding 'Collectio medicamentorum', made by various scribes.]