an arrondissement of the department of the Tarn and the Garonne, in France, 372 square miles in extent. It comprehends six cantons, which are divided into sixty-seven communes, with a population of 61,800 persons. The capital is the city of the same name, situated in a fertile district, through which flows the Tarn, which soon after joins the Garonne. It contains 9800 inhabitants, who are chiefly occupied in trading with Bordeaux, to which city it conveys flour, oil, wool, wine, and a great deal of saffron, for the trade with the colonies. Long. 1. 17. E. Lat. 44. 8. N.