Leiden MS. Vossianus Chym. Q. 31B.
137 folios. Paper. 203x140mm. 16th Century [1573.]

1. f1-125 [Various extracts from philosophical, and religious works, together with soem poems.]
2. f126-127v Clavis ad intelligendum materiam Tincturae Universalis et processum quorundam philosophorum.
3. f128v-130 [Various notes and recipes.]