The boats accordingly did so, von Schalckenberg allowing them ten minutes for the operation; then, with a sudden rush and swirl of water, the huge bulk of the _Flying Fish_ appeared above the surface, looming black, vast, and mysterious against the faintly luminous horizon. A moment more, and the windows of the pilot-house shone out a series of luminous discs against the darkness, showing that the professor had lighted up the interior, and that individual himself appeared on deck hailing the invisible boats with: "It is all right; everything is just as we left it, and you may come on board as soon as you like." Ten minutes later the boats had been hoisted in and stowed away, and the _Flying Fish_, at an elevation of some three hundred feet above the sea- level, was moving to the southward and eastward across the placid waters of the Channel, at the moderate rate of some five-and-twenty miles per hour. At midnight, however, after a little music and conversation, the pace was quickened to about one hundred miles per hour; the altitude was at the same time increased to ten thousand feet; the course was set to south, by compass, and the travellers, with a feeling of perfect security, retired to rest, confident that the professor's clever automatic devices would not only maintain the ship at her then elevation, but would also steer her straight in the required direction. On the following morning at daybreak the travellers found themselves hovering over the blue Mediterranean, with the African coast at no great distance, and a town of considerable size directly ahead. This town was soon identified as Tunis (near which is the site of ancient Carthage), and they shortly afterwards passed over it, not unnoticed by the inhabitants, who, with the aid of the telescope, could be seen pointing upward at the ship in evident consternation. Then on over the chain of hills beyond the town, and they once more found themselves with the sea beneath them, the ship's course causing her to just skirt the Gulf of Hammamet, whilst they obtained a splendid view of Lake Kairwan and the three streams which it absorbs. Then past Capes Dimas and Kadijah, across the Gulf of Cabes, and so on to Tripoli, which was reached and passed soon after the party had risen from breakfast. At this point the Mediterranean was finally left behind, and the ship's speed was shortly afterwards reduced to a rate of about fifteen knots through the air; her altitude being also decreased to about one thousand feet above the ground level.