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,
John Hanning Speke the wider world and were the first to record and map this section of Africa, the efforts and labors of Sidi Mubarak Bombay and Mabruki were instrumental in discovering the lake. Bombay was captured as a child near Lake Nyasa by slave traders and was sold to Indian merchants on the coast of Africa who took him to Sindh. Thus he spoke Hindustani and after his master's death he sailed back to Zanzibar where Speke and Burton met and hired him. Both spoke Hindustani, which greatly facilitated the travel in the interior as Bombay spoke several native languages beside Swahili.