CHAPTER XVIII.
THE LATEST NEWS FROM KHARTOUM.
Intelligence from Khartoum—Retreat of the Slaves—Influence gained over Traders' People—Sail from Gondokoro—The Nile cleared of its Mystery—The Victoria Source—Ptolemy's Theory—Rainfall—Affluents of the White Nile—Action of the Abyssinian Rivers—Colonization impossible—Slavery the Curse of Africa—Impotence of European Consuls —Impossibility of convicting a Trader—Central Africa opened to Navigation—Tribes of Central Africa—Vestiges of a Pre-Adamite Creation—Geological Formation—Hypothesis of Equatorial Lakes—Sir Roderick Murchison's Theories confirmed—Sir Roderick Murchison's Address