a duchy in Italy, between Modena and Guatemala, the Austrian province of Mantua. It is thirty-three square miles in extent, containing the city of the same name, and four small places, with 7200 inhabitants, who cultivate with great care and success wheat, barley, rice, maize, olives, and silk, and breed many black cattle. The city stands in a marshy situation, at the junction of the Crostolo with the Po. It is surrounded with walls and ditches, has an ancient castle, several churches, and 5500 inhabitants, who carry on the trades of spinning and weaving silk. Long. 10° 34' 26" E. Lat. 44° 54' 57" N.