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,
Dillington House Court was William Speke of Jordans near Ilminster, father of the celebrated discoverer of the River Nile John Hanning Speke. It is now a Grade II* listed building. Dillington House was the country residence of George III's Prime Minister, Lord North who acquired it through marriage to Anne Speke. The stables which were built in the 18th or early 19th century were remodelled in 1875 by George Nattress and later in the 1960s when the Coach House was converted into a theatre. The two lodges adjacent to the main gate are also Grade II* listed and are in private ownership.