TESCHEN, a circle of the Austrian principality of Moravia, usually called a duchy. It is bounded on the north by Prussian Silesia, on the east by Galicia, on the south by Hungary, and on the west by Perau. It extends over 756 square miles, and contains nine cities or towns, 279 villages, and 161,500 inhabitants. The capital is the city of the same name, on the beautiful river Elsa. It is well built, is surrounded with walls, and contains one Lutheran and four Catholic churches, and a collegiate institution belonging to each religion. It is a place of considerable trade, and has manufactures of linen and woollen. The situation is fine, and the country around fertile. It is celebrated for the treaty of peace between Austria and Prussia, concluded in 1779. The inhabitants amount to 5860. Long. 12. 27. E. Lat. 49. 41. N.