At the last moment, before leaving Mars, the chums experienced a great disappointment. They had quite expected that Prince Alondra would accompany them; but King Ivanta firmly refused his permission. For the present, at any rate, he said, his son must remain to represent him, and to take his place in looking after his people. At some future time, perhaps, things might be different. ’That means,’ Alondra whispered to Gerald and Jack, ’that he has it in his mind to bring me to see you later on. He is thinking of going upon a voyage of discovery to another planet, and I think I may be able to induce him to call for you to go with us.’ ’Then,’ said Gerald, ’it is not "Good-bye," but "_Au revoir;_" which, being freely interpreted, means "Perhaps Jack and I will see you again before very long!"’ And perhaps they will. Who can say? The two chums, at least, firmly believe that it will come to pass; and that they are destined to take their part in yet other journeys through space in the company of the genial King Ivanta and his vivacious son Alondra. THE END. * * * * * * * * *SCIENCE FICTION* About, Edmond. The Man with the Broken Ear. 1872 Allen, Grant. The British Barbarians: A Hill-Top Novel. 1895 Arnold, Edwin L. Lieut. Gullivar Jones: His Vacation. 1905 Ash, Fenton. A Trip to Mars. 1909 Aubrey, Frank. A Queen of Atlantis. 1899 Bargone, Charles (Claude Farrere, pseud.). Useless Hands. [1926] Beale, Charles Willing. The Secret of the Earth. 1899 Bell, Eric Temple (John Taine, pseud.). Before the Dawn. 1934 Benson, Robert Hugh. Lord of the World. 1908 Beresford, J. D. The Hampdenshire Wonder. 1911 Bradshaw, William R. The Goddess of Atvatabar. 1892 Capek, Karel. Krakatit. 1925 Chambers, Robert W. The Gay Rebellion. 1913 Colomb, P. et al. The Great War of 189-. 1893 Cook, William Wallace. Adrift in the Unknown, n.d. Cummings, Ray. The Man Who Mastered Time. 1929 [DeMille, James]. A Strange Manuscript Found in a Copper Cylinder. 1888 Dixon, Thomas. The Fall of a Nation: A Sequel to the Birth of a Nation. 1916 England, George Allan. The Golden Blight. 1916 Fawcett, E. Douglas. Hartmann the Anarchist. 1893 Flammarion, Camille. Omega: The Last Days of the World. 1894 Grant, Robert et al. The King’s Men: A Tale of To-Morrow. 1884 Grautoff, Ferdinand Heinrich (Parabellum, pseud.). Banzai! 1909 Graves, C. L. and E. V. Lucas. The War of the Wenuses. 1898 Greer, Tom. A Modern Daedalus. [1887] Griffith, George. A Honeymoon in Space. 1901 Grousset, Paschal (A. Laurie, pseud.). The Conquest of the Moon. 1894 Haggard, H. Rider. When the World Shook. 1919 Hernaman-Johnson, F. The Polyphemes. 1906 Hyne, C. J. Cutcliffe. Empire of the World. [1910] In The Future. [1875] Jane, Fred T. The Violet Flame. 1899 Jefferies, Richard. After London; Or, Wild England. 1885 Le Queux, William.