an island in the Indian Ocean, about 150 miles E. of Cape Guardafui, the eastern extremity of Africa, and 220 S.S.E. of Ras-Fartak in Arabia. N. Lat. 12. 39.; E. Long. 54. 1. Its length from E. to W. is about 70 miles, its average breadth 15, and its area about 1000 square miles. The centre of the island consists of a table-land, from 700 to 800 feet high, on the north and south of which there are tracts of lowland along the coast. On the north edge of the table-land rises a ridge of granitic mountains, having a general height of 3000 feet, and several peaks rising as high as 5000. The rest of the table-land is slightly undulating, forming broad valleys stretching north and south. The coasts of the island are generally abrupt, and in some places lofty. A few perennial rivulets, and a number that are dry in summer, water the land. The climate is temperate, and the soil productive: aloes and the gum of the dragon's-blood tree, both of excellent quality, are the chief commercial products; but dates, tamarinds, tobacco, &c., are also raised. On the extensive pastures, oxen, sheep, and goats are reared. Some trade is carried on with Muscat; and the island is subject to the Imam of that town. Population estimated at 4000.