Modena, Biblioteca Estense MS. Latin 299 (Alpha M 8, 16). 59 folios. Paper. 15th/16th Century. 1. Petrus Bonus. Incipit pretiosa et notabilis Margarita Novella et ipsa est quaestio de speculatione et virtute artis alchimie... per magistrum Bonum Ferrariensem scilicet utrum ars alchimie sit omnino vere vel fantastica. [At the end is an epigram by Lud. Lazarellus Septempedanus (scribe of this MS. or of its archetype) to his teacher Johannes.]