EISENACH, the Isenacum of the ancients, is a town of Germany, in the duchy of Saxe Weimar, and former ly the chief town of the principality of Saxe Eisenach. The town is situated in an agreeable and fertile valley on the river Ncssc, and was founded in the year 1070. The streets are regular, and are well paved and light ed, and the town contains several good houses. The principal objects of curiosity at Eisenach ale, the an cient castle of Wartburg, in which Luther was con fined, in 1521. It is situated about two miles from the town, on the top of a high mountain, and is now in a state of ruin. It. is nearly an hour's walk from the town to the top of the mountain, and the highest part of tl a road is cut through the rock. The walls, tl.e ceiling, several ornaments, and the ancient hall of the cheva liers, arc now filled with hay. The signal tower, the subterraneous prisons, the chambers inhabited by the ancient landgraves of Thuringia, anti the chapel of tl. :
pious Elizabeth, are still shewn. The view from the castle is very fine and extensive. Among the surround ing rocks, there are two remarkable for their elevation and their form. The English garden belonging to M.
Roese is upon the heights which surround Wartburg, and \veil worthy of being visited. There is a very hrge and good library, belonging to the grammar school, tihich was founded in 1707, by the Duke John William. There is also a college, a seminary for di vinity, and an orphan hospital. Eisenach carries on a very active commerce, and possesses manufactures of white lead, serges, shags, ribbons and starch. The population of the town is between 9000 and 10,000. For a particular account of the castle of Wartburg, see the second edition of the description of it published by M. East Long. by astronomical observations, 10° 20' 15", North Lat. 50° 58' 55". (w)