British Library MS. Add. 29487. Paper. Quarto. Early 17th Century. Alchemical tracts, in Italian, viz: 1. 'Libro del Giovanni Isaci Hollandese originale in penna copiato e translato della lingua Germanica in Italiana per me Giovanni Giouansonjo Beltes, Groninganus Frisus,' with an index and a glossary of alchemical symbols. The translator states that the work differs from the printed editions. f.1. 2. 'De cabala del phylosopho Giovanni Isaci Hollandese,' with an index and glossary, f69. 3. 'Stanza del Tesoro;' a collection of alchemical processes, f.99.