“ There are a museum, a library of 36,000 volumes, classical and commercial schools, and a teachers’ seminary. Lüneburg owes its importance chiefly to the gypsum and lime quarries of the Kalkberg, which afford the materials for its cement works, and to the productive salt-spring at its base which has been known and used since the 10th century. Hence the ancient saying which, grouping with these the commercial facilities afforded by the bridge over the Ilmenau, ascribes the prosperity of Lüneburg to its mons, fons, pons. Other industries are the making of chemicals, ironware, soda and haircloth. ”