In its pages, one can see some of the elements that were eventually to come together to form such great stories as "Around The World In Eighty Days", and "20,000 Leagues Under The Sea". In this story, Dr. Ferguson creates a hydrogen balloon for the purpose of exploring the unknown regions of Africa. He decides to take along Dick Kennedy, a Scotsman with whom he became friends when they served in the same regiment and who tries to dissuade him from making the journey, and Joe, who is his faithful servant. As one might expect, parts of this story are dated, and some of the language regarding the natives undoubtedly would offend many people if one were not to take into account when it was written.