The enemy would have required keen eyes and good glasses on board the gunboat to have made them out, for as the sails filled, the schooner careened over and began to glide slowly along the shore as if making for the fort, which she passed and left about a quarter of a mile behind, before she was thrown up into the wind to go upon the other tack, spreading more and more canvas and increasing her speed, as the gunboat, now invisible save for a couple of lights which were hoisted up, came dead on for the town, nearing them fast, and calling for all the mate's seamanship to get the schooner during one of her tacks well out of the heavy craft's course, and leaving her to glide by; though as the darkness increased and they were evidently unseen, this became comparatively easy, for the war-vessel's two lights shone out brighter and brighter at every one of the schooner's tacks. But they were anxious times, and Fitz's heart beat fast during the most vital reach, when it seemed to him as they were gliding by the gunboat's bows that they must be seen, even as he could now make out a few sparks rising from time to time from the great funnel, to be smothered in the rolling smoke. But the next minute they were far away, and as they tacked it was this time so that they passed well abaft under the enemy's stern. "Ah," said a voice close to them; and as they looked round sharply it was to see the skipper close at hand. "There, boys," he said, "that was running it pretty close. They can't have been keeping a very good look-out aboard that craft. It was much nearer than I liked.--Ah, I wonder how poor Don Ramon will get on." That finished the excitement for the night, for the next hours were passed in a monotonous tacking to and fro, making longer and longer reaches as they got farther out to sea; but they looked shoreward in vain for the flashes of guns and the deep thunderous roar of the big breech-loading cannon. But the sighing of the wind in the rigging and the lapping of water against the schooner's bows were the only sounds that greeted them in the soft tropic night. CHAPTER THIRTY NINE. "NEVER SAY DIE!"