“But,” asked Beautrelet, “how is it that the fishermen who enter the lower cave don’t know that it’s open at the top and that it communicates with another from which a staircase starts and runs through the Needle? The facts are at the disposal of the first-comer.” “Wrong, Beautrelet! The top of the little public cave is closed, at low tide, by a movable platform, painted the color of the rock, which the sea, when it rises, shifts and carries up with it and, when it goes down, fastens firmly over the little cave. That is why I am able to pass at high tide. A clever notion, what? It’s an idea of my own. True, neither Cæsar nor Louis XIV., nor, in short, any of my distinguished predecessors could have had it, because they did not possess submarines. They were satisfied with the staircase, which then ran all the way down to the little bottom cave. I did away with the last treads of the staircase and invented the trick of the movable ceiling: it’s a present I’m making to France—Raymonde, my love, put out the lamp beside you—we shan’t want it now—on the contrary—” A pale light, which seemed to be of the same color as the water, met them as they left the cave and made its way into the cabin through the two portholes and through a thick glass skylight that projected above the planking of the deck and allowed the passengers to inspect the upper layers of the sea. And, suddenly, a shadow glided over their heads. “The attack is about to take place. The fleet is investing the Needle. But, hollow as the Needle is, I don’t see how they propose to enter it.” He took up the speaking tube: “Don’t leave the bottom, Charolais. Where are we going? Why, I told you: to Port-Lupin. And at full speed, do you hear? We want water to land by—there’s a lady with us.” They skimmed over the rocky bed. The seaweed stood up on end like a heavy, dark vegetation and the deep currents made it wave gracefully, stretching and billowing like floating hair. Another shadow, a longer one. “That’s the torpedo-boat,” said Lupin. “We shall hear the roar of the guns presently. What will Duguay-Trouin do? Bombard the Needle? Think of what we’re missing, Beautrelet, by not being present at the meeting of Duguay-Trouin and Ganimard! The juncture of the land and naval forces! Hi, Charolais, don’t go to sleep, my man!” They were moving very fast, for all that. The rocks had been succeeded by sand-fields and then, almost at once, they saw more rocks, which marked the eastern extremity of Étretat, the Porte d’Amont. Fish fled at their approach. One of them, bolder than the rest, fastened on to a porthole and looked at the occupants of the saloon with its great, fixed, staring eyes.