an arrondissement of the department of the Upper Rhine, in France. It extends over 660 square miles, and contains thirteen cantons, with 142 communes, and 156,970 inhabitants. The chief place, a city of the same name, is situated on a beautiful plain, with a canal connected with others extending to Basle in Switzerland. It was formerly more completely fortified than it is at present. It is the seat of the local judicatures, and has an institution for the instruction of artillery officers. It contains 1278 houses, and 11,033 inhabitants. There are some large cotton manufactories, and near to it are royal establishments for refining saltpetre and making gunpowder. It is said that 1600 pounds of the latter can be fabricated daily. There is one of the finest nursery gardens in France, with an orangery 150 feet in length. It is in long. 7° 29' 55" E. and lat. 48° 4' 44" N.