Five Weeks in a Balloon the need to release gas or throw ballast overboard to control his altitude, allows very long trips to be taken. This voyage is meant to link together the voyages of Sir Richard Burton and John Hanning Speke in East Africa with those of Heinrich Barth in the regions of the Sahara and Chad. The trip begins in Zanzibar on the east coast, and passes across Lake Victoria, Lake Chad, Agadez, Timbuktu, Djenné and Ségou to St Louis in modern-day Senegal on the west coast. The book describes the unknown interior of Africa near modern-day Central African Republic as a desert,
Mountains of the Moon (Africa) Speke in 1862 sought the source of the White Nile in the Great Lakes region. Henry Morton Stanley finally found glacier-capped mountains possibly fitting Diogenes's description in 1889 (they had eluded European explorers for so long due to often being shrouded in mist). Today known as the Rwenzori Mountains, the peaks are the source of some of the Nile's waters, but only a small fraction, and Diogenes would have crossed the Victoria Nile to reach them. Many modern scholars doubt that these were the Mountains of the Moon described by Diogenes, some holding that his reports were wholly fabricated. G.W.B.