London, Wellcome Institute MS. 309. 350 pages. 135x75mm. 16th Century [1572.] Johann Gerlach. Occulta scripta chymica. [In cypher. Illustrated with numerous small water-colour symbolic drawings.] 1. pp1-6 [Four Psalms in German, and two Latin prayers.] 2. pp7-178 Secreta alchemica [in cypher, German.] 3. pp179-180 [Prayers in German.] 4. pp181-187 Elixir Vitae [list of components in Latin.] 5. pp188-209 [Alchemical and medical receipts, prayers, etc., mainly in cypher, and in German.] 5. pp210-219 Ciment Regal [in German.] 6. pp221-252 Libellus de creatione omnium rerum Anno 1575 Die 23 Augusti. In der Naunburgk an der Sala. Authori Johanne Girlachio [in German.] 7. pp322-328 Lapis philosophorum. 1576 Die Saturni 25 February [in German.] [From the Julius Kohn library.]