In an instant the whole crew was on foot. It was the fault of the gun captain, who had neglected to fasten the screw-nut of the mooring-chain, and had insecurely clogged the four wheels of the gun carriage; this gave play to the sole and the framework, separated the two platforms, and the breeching. The tackle had given way, so that the cannon was no longer firm on its carriage. The stationary breeching, which prevents recoil, was not in use at this time. A heavy sea struck the port, the carronade, insecurely fastened, had recoiled and broken its chain, and began its terrible course over the deck. To form an idea of this strange sliding, let one imagine a drop of water running over a glass. At the moment when the fastenings gave way, the gunners were in the battery, some in groups, others scattered about, busied with the customary work among sailors getting ready for a signal for action. The carronade, hurled forward by the pitching of the vessel, made a gap in this crowd of men and crushed four at the first blow; then sliding back and shot out again as the ship rolled, it cut in two a fifth unfortunate, and knocked a piece of the battery against the larboard side with such force as to unship it. This caused the cry of distress just heard. All the men rushed to the companion-way. The gun-deck was vacated in a twinkling. The enormous gun was left alone. It was given up to itself. It was its own master and master of the ship. It could do what it pleased. This whole crew, accustomed to laugh in time of battle, now trembled. To describe the terror is impossible. Captain Boisberthelot and Lieutenant la Vieuville, although both dauntless men, stopped at the head of the companion-way and, dumb, pale, and hesitating, looked down on the deck below. Some one elbowed past and went down. It was their passenger, the peasant, the man of whom they had just been speaking a moment before. Reaching the foot of the companion-way, he stopped. The cannon was rushing back and forth on the deck. One might have supposed it to be the living chariot of the Apocalypse. The marine lantern swinging overhead added a dizzy shifting of light and shade to the picture. The form of the cannon disappeared in the violence of its course, and it looked now black in the light, now mysteriously white in the darkness.