a principality forming part of the duchy of Brunswick. Area 170 square miles, comprehending a part of the Hartz Forest; pop. 22,000. The chief city, of the same name, is at the foot of the Blankenstein mountain, on the summit of which, 1130 feet above the city, is situated the summer palace of Louisenburgh, with its pavilions and preserves for game, from which is an enchanting prospect over a most romantic district. Pop. 3500. Long. 10° 52' E. Lat. 51° 47' N.