Oxford, Bodleian Library MS. Bodley 645 (2264). In Latin on paper: 8 3/8 x 6 ins, 97 folios. 2nd half of 14th Century. With coloured capitals and diagrams. Alchemical Treatises by Raymundus Lullus:- I. f1 De secretus naturae et quintae essentia [in two books with the prologue by Monaldus, here without title. Colophon on f.72v. 'Finuit Remundus librum istum parisius anno ab Incarnacione Domini M.CCC.XIX. In monasterio sancti Benedicti Canturien [sic] extra ciuitatem.'] 2. f74 Anima artis transmutatorie metallorum. [At end 'Finuit Remundus librum istum in Monte Pessulano... anno ab Incarnatione Domini M.CCC.XXI'.]