Inner Africa laid open, in an attempt to trace the chief lines of communication across that continent south of the Equator : with the routes to the Muropue and the Cazembe, Moenemoezi and Lake Nyassa : the journeys of the Rev. Dr. Krapf and the Rev. J. Rebmann on the Eastern Coast, and the discoveries of Messrs Oswell and Livingstone in the heart of the continent,