CALAIS, St, an arrondissement in the department of the Sarthe, in France, extending over 465 square miles. It is divided into six cantons, and these again into sixty communes, containing 66,330 inhabitants. The chief place is a city of the same name, on the river Anille, in an unfruitful spot, containing 3646 inhabitants, occupied in manufacturing serges, flannels, and some kinds of linen goods.