British Library MS. Sloane 2125. Paper. Octavo. 69 folios. 17th Century. 1. A Treatise on the Philosopher's Stone, by Basilius Valentinus, Benedictine Monk [German.] ff.1-55. 2. 'Particularia a Basilianis non omnino aliena': consisting of various processes. [German.] ff.56-59. 3. 'Erklärung uber die XII Schlüssel F. Bas. Valentini. Elucidation ista Rudolpho II Imperatori ab Archiepiscopo Coloniensi [Ernesto de Bavaria] Pragam transmisso.' German. f.60-69.