British Library MS. Sloane 3713. Paper. Quarto. 187 folios. 17th Century. A collection of Alchymical processes and observations from various authors, with an index of contents. 1. Notes and sentences from various philosophers' books touching quintessence of metals and minerals, divided into 12 chapters. ff.1-33. 2. 'The worke of Boniface the IV of whiteing and Rubifienge'. ff.34-55. Begins: 'First we will beginn at the dissolucion of [Mercury]'. 3. 'Of the vegitable menstruall after Ramond Lullii in his most Newe Testament'.