London, Wellcome Institute MS. 449. 77 folios. 125x85mm. Mid 17th Century. Art misterieux de Raymond Lulle, ou science généralle. Praxis argumentandi. [Illustrated with a few pen drawn diagrams, and a small engraved portrait of Lully, below which is the signature in pencil of 'Frederick Hockley 1827'. On the fly leaf is 'Wm. Alexr. Aytoun'.]