British Library MS. Sloane 338. Paper. Quarto.108 pages. Dated to 1461. [Once belonged to Francis Bernard, and numbered 84.] 1. Johannis de Rupescissa de quinta essentia libri duo. p.1. Exstant impress. in 12mo., Basileae, 1597. 2. 'Tractatus de septem herbis, septem planetis attributis' e libris Kyranidarum. p.93. 3. Tractatulus de alchymia, qui appellatur, Donum coeleste. p.100. Begins: 'Audite secreta, quae loquor.' Ends: 'Explicit liber iste A.D. 1461, ultimo die Maii.'