SEWESTAN, a tract of land in Afghanistan, forming
the south-eastern corner of that country, lying between N. lat. 29° 30' and 30° 30'; about E. long. 69° 30'. It forms part of the Khanat of Candahar. On the east it is separated by the Suliman Mountains from the Punjab; on the south from Beloochistan by the mountains about Kohun; on the west it is inclosed by the Toba and Hala ranges; and towards the north it has no definite limit. It consists of a flat dry clayey plain, whose excessive heat is only alleviated by the streams that flow in some places from the hills. The chief town is Sewee, or Sebee, near the southern frontier, in a tract of land which is one of the best cultivated parts of the country.