Arcot districts, North and South, are two maritime districts in the Madras presidency, British India. Their united area amounts to 9,925 square miles. The country was ceded to the East India Company in 1801 by Azimul-Omrah, the Nabob of the Carnatic. The interior is mountainous and thickly wooded. The rivers Palar and Coleroon give but a scanty supply of water in dry seasons, and large tanks have been constructed. Rice and the usual cereals are produced, and in North Arcot cotton cloth is manufactured.