APT, a town in France, in the department of Vaucluse, on the left bank of the Coulon, 41m. E. of Avignon by rail. Pop. Apt was the chief town of the Vulgientes, de stroyed by the Romans about 125 B.c. and restored by Julius Caesar, who named it Apta Iulia. Injured by the Lombards and the Saracens, its fortifications were rebuilt by the counts of Provence. The bishopric, founded in the 3rd century, was sup pressed in 179o. The massive ancient walls have been replaced by boulevards ; the streets are narrow and irregular. The church of Ste. Anne (once the cathedral) was begun about 1o56 on the site of an older edifice, but was not completed until the 17th century. Roman remains have been found ; the Pont Julien, span ning the Coulon, dates from the 2nd or 3rd century. The chief manufactures are artistic pottery, cement, jam, and tiles; and there is a considerable trade in fruit, vegetables, silk, wool, grain, and cattle. There is a tribunal of first instance.