CORBEIL, a town of northern France, capital of an arron dissement in the department of Seine-et-Oise, at the confluence of the Essonne with the Seine, 21 m. S. by E. of Paris. Pop. From the loth to the 12th century Corbeil was the chief town of a powerful courtship, but it was united to the crown by Louis VI. ; it continued for a long time to be an im portant military post. In 1258 St. Louis concluded a treaty here with James I. of Aragon. It was besieged by the Huguenots in 1562, and by Alexander Farnese, prince of Parma, in 1590. A bridge across the Seine unites the main part of the town on the left bank with a suburb ; handsome boulevards lead to the town of Essonnes (pop. 8,708), about 1 m. S.W. St. Spire, the only survivor of the formerly numerous churches of Corbeil, dates from the 12th to the 15th centuries. Behind the church there is a Gothic gateway. Corbeil is the seat of a sub-prefect, and has tribunals of first instance and commerce and a chamber of com merce. It has flour-mills, tallow-works, printing-works and paper works and manufactures plaster.