an arrondissement of the department of La Manche, in France. It comprehends 389 square miles, and is divided into five cantons and seventy-eight communes, containing 67,565 inhabitants. The capital, of the same name, is a city in a large bay at the mouth of the small river Divette. As the only part possessed by France in the Channel, great pains and cost have been expended within the last twenty years to render the haven secure and defensible. It contains 14,315 inhabitants, who chiefly belong to the naval service, or find occupation in the various trades with which an arsenal is naturally surrounded. Besides these, are establishments for making large mirrors and other glass. It is in long. 1° 8'. 20'. W. and lat. 49° 2'. 50'. N.