Yet even the hot shot did not at first make much impression. The French engineer had guarded against them by having pumps constantly pouring water into the layer of sand below, where a red-hot cannon-ball would soon be rendered harmless. In fact, a number of times during the day smoke was seen to issue from the floating batteries, showing that the hot shot had taken effect, but the flames were promptly extinguished. It was not till late in the afternoon that they began to burst out, and it was seen that the Admiral's ship was on fire. As the night drew on the flames became more visible, showing the exact position of the Spanish line, and furnishing a mark for the English guns. On another ship the fires advanced so rapidly that they had to flood the magazine for fear of an explosion. Others threw up rockets, and hoisted signals of distress to their consorts, and boats were seen rowing toward them. At midnight nine out of the ten battering-ships were on fire. The scene at this moment was awful beyond description, as the flames mounted higher and higher till they lighted up the whole bay and the surrounding shores. When it became evident that the ships could not be saved, there was a panic on board; all discipline was lost in the eagerness to escape from the burning decks; sailors and gunners threw themselves into the sea. French and Spanish boats picked up hundreds, and still there were hundreds more who were perishing, whose agonized shrieks rose upon the midnight air. The English heard it, and stout hearts that quailed not at the roar of guns, quivered "At the cry Of some strong swimmer in his agony."