Hesse-Nassau (1,664), a province in the SW. of Germany, between the Rhine on the W. and Bavaria and Saxony on the E.; was formed in 1868 out of the electorate of Hesse-Cassel, duchy of Nassau, &c.; the country is hilly, abounds in minerals, which are extensively worked, but agriculture and cattle-rearing are the chief industries; the medicinal springs of Homburg, Wiesbaden, &c., are celebrated; Cassel is noted for its gold and silver ware; damasks and other textiles are produced at Fulda, and at Hanau are flourishing iron-works; Marburg has a fine university.