an arrondissement of the department of the Orne, in France, extending over 806 square miles, and containing a population of 122,000 persons. It is divided into eleven cantons, and these again into 171 communes. The capital is the city of the same name, situated on a hill, at the base of which flows the river Chyppe. It is a well-built town, surrounded with walls, containing 910 houses, and 5750 inhabitants, who make some linen and cotton goods, and carry on some twist spinning. Long. 0. 27. 14. E. Lat. 48. 31. 18. N.