Glasgow University Library MS. Ferguson 9. 24 folios 178x131mm. 17th Century. 1. f1-13 A treatise of the most great Lord and Philosoph: Dunston, Bishop of Canterbury: Concerning the Philosophers' Stone. [Note at end]: 'Dunstan of the Stone of Philosophers is to be found at the end of Philosophia Maturata, an exact piece of Philosophy, etc pubd. 1668, but the work so called is not this which is in MS. nor a copy of it.' 2. f14r-24r Manna from Heaven.