1. Harley MS 1611 Reference (shelfmark): Harley MS 1611 Title: Two astronomical treatises Scope & Content: Contents: ff. 1r-52v: A treatise on the sphere, geophysics, geography and cosmology known as 'Compendium astronomiae'. ff. 53r-134v: A treatise on astronomy. Decoration: Several geometrical diagrams. Collection Area: Western Manuscripts Languages: Latin Date Range: 16th century Extent: 1 volume