Major explorations after the Age of Discovery to locate the source of the River Nile. Expeditions by Burton and Speke (1857–1858) and Speke and Grant (1863) located Lake Tanganyika and Lake Victoria. It was eventually proved to be the latter from which the Nile flowed. Explorers were also active in other parts of the continent. Southern Morocco, the Sahara and the Sudan were traversed in many directions between 1860 and 1875 by Georg Schweinfurth and Gustav Nachtigal. These travellers not only added considerably to geographical knowledge, but obtained invaluable information concerning the people, languages and natural history of the countries in which they sojourned. Among the discoveries
The Strange Affair of Spring-Heeled Jack and explorer John Hanning Speke. It includes actual historical events, namely the Spring-heeled Jack case, the assassination attempt on Queen Victoria in 1840, the search for the source of the Nile and the development of Darwin's theory of Evolution. A time-traveller from the distant future returns to 1840 to prevent an ancestor from attempting to commit an act of regicide. After failing in his mission, he returns to 1837 and recruits the 'Mad Marquess' to find his ancestor and correct the error. The result of his interference is an altered timeline in which technological advances have given rise to two