CARLSTADT, a division of that part of the Austrian empire denominated the Croatian Military Frontier. It extends along the shores of the Adriatic Sea, being bounded on the north by Illyria; on the east by the Banal Frontier, Bosnia, and Dalmatia; on the south and west by the Adriatic; and on the north-west by Illyria. It extends over 3750 square miles, or about 2,300,000 English acres, and contains 193,600 inhabitants, living under a kind of feudal military discipline, in small establishments, always in a state of preparation to repel any incursions from their Turkish neighbours. The country is for the most part mountainous and sterile; but many spots are cultivated, and produce, corn, wine, and silk; and there are many saw-mills for converting the woods to useful purposes.