British Library MS. Sloane 3711. Paper. Quarto. 84 folios. 17th Century. 1. Codex veritatis sive arcana Naturae referata et exposita per ignem, auctore Georgio Starkey (?). ff.1-7. 2. A collection of Alchymical processes and observations, extracted from various sources. ff.8b-69, 74-84. 3. A few extracts from Edward Mainwaring's book, entitled, Tutela Sanitatis. ff.69-73.