or The Sea, a lake in the interior of equatorial Africa, has been known by report to Europeans for about three centuries, but has never yet been reached or explored by them. The latitude of its centre is about 10° S., and it is believed to extend from S.E. to N.W. between E. Long. 30° and 35°. It is known by various names, and appears to be the same as the lake called Maravi on old maps. The great rivers Nile, Zaire, and Zambesi have been supposed to take their source from this lake, but the truth of the statement is more than doubtful.