London, Wellcome Institute MS. 259. 1 + 61 + 47 + 72 folios. 190x130mm. 17th Century [1649.] Petrus Almerigus Encherchz. De lapide philosophico opera varia diversorum auctorum fideliter collecta. MDLII [sic]. 1. ff1-28 G.A. Pantheo. Ars transmutationis metallicae. 1518 [transcript]. 2. ff30-43 [Anonymous alchemical work.] 3. ff43-44 [Anonymous alchemical poem in Italian, written in the semi-Greek character cypher.] 4. ff44-61 [Alchemical notes.] 5. f1-47 Arthur Dee. Fasciculus chemicus. 6. f1-72 [Alchemical text beginning 'Studio namque florenti...']