Leiden MS. Vossianus Chym. Q. 2. 227 folios. Paper. 225x160mm. 15th/16th Century [c. 1500.] 1. f1-227 [Collection of chemical recipes and processes, in Latin, with parts in German.] 2. f85-89 Turba philosophorum [extracts.] 3. f122-132v Johannes de Rupescissa, Liber lucis; De quinta essentia [extracts.] 4. f195v-199 Raimon Lull, Epistola accurtationis.