BAR-SUR-SEINE, an arrondissement of the department of the Aube, in France, extending over 648 square miles, comprehending five cantons and eighty-six communes, and containing 50,449 inhabitants. The chief place of the same name has a population of 2600 persons, employed in manufactures, and trading in the wine grown in its neighbourhood. Long. 2. 15. E. Lat. 48. 5. N.