CHAPTER XXIII.

Recent Explorations of Soudân—Limit of the Tropical Rains—The Conquest of Ethiopia—Countries Tributary to Egypt—The District of Takka—Expedition of Moussa Bey—The Atbara River—The Abyssinian Frontier—Christian Ruins of Abou-Haràss—The Kingdom of Sennaar—Kordofan—Dar-Fūr—The Princess of Dar-Fūr in Khartoum—Her Visit to Dr. Reitz—The Unknown Countries of Central Africa, 297