1. Cotton MS Tiberius B IX, ff 225–236 Reference (shelfmark): Cotton MS Tiberius B IX, ff 225–236 Title: Mahumet Bag-dadini, Liber divisionum (225v–229r); Roger Bacon, De speculis comburentibus (230v–235r: T/K 530); unidentified verse (236r–v) Collection Area: Western Manuscripts Languages: Latin Date Range: 2nd half of the 14th century Extent: 1 item