Nautilus (Verne) assembled by Nemo's men on a desert island. "Nautilus" most likely returned to this island and later helped castaways in the novel "The Mysterious Island". After Nemo dies on board, the volcanic island erupts, entombing the Captain and "Nautilus" for eternity. Beside her original appearance in "Twenty Thousand Leagues Under the Sea" and "The Mysterious Island", "Nautilus" and Captain Nemo have appeared in numerous other works. Submarines feature in some other of Verne's works. In the 1896 novel "Facing the Flag", the pirate Ker Karraje uses an unnamed submarine that acts both as a tug to his schooner "Ebba" and
Jules Verne "Roman de la Science" (novel of science), which would allow him to incorporate large amounts of the factual information he so enjoyed researching in the Bibliothèque. He is said to have discussed the project with the elder Alexandre Dumas, who had tried something similar with an unfinished novel, "Isaac Laquedem", and who enthusiastically encouraged Verne's project. At the end of 1854, another outbreak of cholera led to the death of Jules Seveste, Verne's employer at the Théâtre Lyrique and by then a good friend. Though his contract only held him to a further year of service, Verne remained connected to