The _Supplejack_, long after the chase had got out to sea, remained concealed under the dark shadow cast by the castle across the entrance. It then fell a dead calm, and the schooner was completely lost to sight. Boats were now sent ahead to tow. This was necessary, indeed, in order to keep the brig off the rocks. It was slow work, however, and Jack could only hope that with the rising sun the breeze would freshen, so that he might make chase after the schooner. The way in which she had crept out convinced him that she was a slaver; had he before entertained any doubt as to Don Matteo's reasons for inviting him and his officers to the ball, they now completely vanished. It was evident that the old villain wanted to keep him and his officers on shore, that the slaver might take the opportunity of putting to sea and getting a good start, before it was discovered that she had gone. She must have got away, also, Jack very well knew with the connivance of the captain of the port, who had, of course, been bribed by her owner, as had likewise the officer in command at the Moro, who would not otherwise have allowed her to pass. Jack expected every instant to receive a shot from the castle, but probably the last-mentioned personage thought it prudent not to fire, lest he might have been asked why he allowed the schooner to pass. When daylight returned, as Jack and Bevan swept their glasses round in every direction, several sail were seen dotting the horizon. Jack handed his glass to Needham. "Which of them do you think is the _Venus_?" he asked. "The centre one of those three vessels in the north-east, sir," answered Needham promptly. "No doubt about that; I know her by the whiteness of her canvas. She must have had a pretty tidy breeze to get out so far while we lay becalmed." "You are right," said Jack. "That is the one I take to be the _Venus_." "So do I," observed Bevan. "Hurrah! here comes a breeze. We shall soon have the pleasure of making her better acquaintance, I hope!" The boats were hoisted up, and every stitch of sail the brig could carry was packed on her. The breeze freshened, and away she flew over the blue ocean, leaving the white walls of the Moro far astern. The question was whether the slaver would run for the Gulf of Florida, or attempt to make her way through the Bahama Channel. "We must try, at all events, to get hold of her before nightfall," observed Jack, "or she will be playing us another trick, and give us the go-bye in the dark." "We'll try and do that same, sir," said Needham; "if the wind holds with us as it does now, it won't be a difficult job. She doesn't seem to have much of it out there, and we are getting up fast with her." The _Supplejack_, indeed, was gaining rapidly on the schooner, but the treacherous wind soon gave indications of not being inclined to favour the British brig. Dark clouds gathering in the sky came sweeping rapidly over it.