London, Wellcome Institute MS. 938. 1 folio + 134 pages + 4 folios. 195x145mm. 18th Century. 1746, 1747. Philippus Jacobus Josephus de Amatis. Angelicus liber aureus de pretiosorum lapidum compositione et virtute, ac de divino maximoque arcanorum arcano, tam super simplici et philosophica extractione veri auri potabilis, quam de lapide philosophico et sua multiplicatione in Elixir, cum additione duarum cabalarum astronomicarum. [Illustrated by pen and wash drawings of alchemical apparatus.] [In Latin and Italian. Written in Naples.]