Many of the volumes consulted in the preparation of the book are named in the narrative, but circumstances made it inconvenient to refer to all. Among the volumes most freely used are the works of the following authors: Stanley's "Through the Dark Continent" and "Coomassie and Magdala;" Livingstone's "Travels and Researches in South Africa," "Expedition to the Zambesi," and "Last Journals;" Schweinfurth's "The Heart of Africa" (two volumes); Barth's "Discoveries in North and Central Africa" (three volumes); Speke's "Journal of the Discovery of the Source of the Nile;" Burton's "The Lake Regions of Central Africa;" Long's "Central Africa;" Baker's "The Nile Tributaries of Abyssinia" and "Ismailïa;" Reade's "Savage Africa;" Bourne's "African Discovery and Adventure" (two volumes); Wilson's "Western Africa;" Baldwin's "Hunting in South Africa;" Cumming's "A Hunter's Life in Africa;" Silver's "Hand-book to South Africa;" Cameron's "Across Africa;" Serpa-Pinto's "Comment J'ai Traversé L'Afrique" (two volumes); Du Chaillu's "Equatorial Africa," "Ashango Land," "Wild Life Under the Equator," "My Apingi Kingdom," and "Lost in the Jungle;" Anderson's "Lake Ngami;" and lastly, several authors whose narratives have appeared in _Le Tour du Monde_. The publishers have kindly allowed the use of illustrations which have appeared in previous volumes relating to the African continent, in addition to those specially prepared for this work. The maps in the front and rear covers were drawn from the best authorities, and are intended to embody all recent discoveries. With this explanation of his methods, and the acknowledgment of his indebtedness to numerous explorers and writers, the author submits the adventures of Frank and Fred in Africa to the press and public that have so kindly received the narratives of the previous travels of those youths. T. W. K. CONTENTS. CHAPTER I. PREPARATIONS FOR THE JOURNEY.--FROM CAIRO TO KOROSKO. 13 CHAPTER II. LEAVING KOROSKO.--EARLY EXPLORERS OF THE NILE VALLEY. 25 CHAPTER III. FROM KOROSKO TO ABOO HAMED.--THE NILE AGAIN.--ADVENTURE WITH A CROCODILE. 37 CHAPTER IV. BERBER AND SHENDY.--HUNTING THE HIPPOPOTAMUS.--TERRIBLE REVENGE OF AN ETHIOPIAN KING. 48 CHAPTER V. LIFE IN KHARTOUM.--DEPARTURE FOR GONDOKORO. 61 CHAPTER VI. AMONG THE SHILLOOK NEGROES.--ARRIVAL AT FASHODA.--EXPLORERS OF THE NILE. 74 CHAPTER VII. AN ANTELOPE HUNT.--GUINEA-WORMS, WHITE ANTS, AND GREAT SNAKES. 86 CHAPTER VIII. THE DINKAS AND BARIS.--GONDOKORO.--ANNEXATION TO EGYPT. 99 CHAPTER IX. AN ELEPHANT HUNT.--MARCHING SOUTHWARD FROM GONDOKORO. 116 CHAPTER X.