The current was now making down very strong, and the boat consequently progressed but slowly. Still Mr Evans persevered. The men bent lustily to their oars, and reach after reach of the river was passed, but there was no sign of the chase. Now and then there were openings in the mangrove bushes, and more than once Jack felt certain that he saw some dark figures running along parallel with the river, and evidently watching their movements. Jack pointed them out to Mr Evans. "That looks as if we had enemies in the neighbourhood," observed the lieutenant. "Be ready, my men--marines, look to your arms." The boat pulled eight oars, and there were two marines in the bows, and two in the stern-sheets, sitting with their muskets between their knees. In the bows of the boat was a small swivel-gun, and all the bluejackets with cutlasses and pistols. Besides the lieutenant and Jack, there was the coxswain, and there were some half-dozen long pikes which, as the latter observed, would come in handy, if they had a fight with another boat or had to attack a fort, but for boarding he would not give a rush for them. The ebb-tide rushed past the boat dark and smooth, but with swirling eddies, which showed the strength of the current against which they had to contend. "I wonder whether the other boat has fallen in with the slaver." "I envy them if they have," observed Jack, who didn't much like being silent just then. There was something very oppressive in the atmosphere, and in the dark solemn scenery which surrounded them. The sea-breeze had by this time set in and blew up the river, but it had not yet been strong enough to make it worth while to hoist the sail. "I scarcely think the schooner could have got up so far as this," observed Mr Evans. "But we will pull on a little farther, and then if we do not see her, we will go back, and join the other boat." They had just then arrived at the end of a reach. The extent of the next one was hidden from their sight by a point of land thickly covered with trees. They pulled on, and soon doubled the point. Directly they did so there appeared before them, pressing up the stream, under all sail, the object of their search. The men required no urging, but, bending to their oars, away they pulled in hot chase after her. The schooner stood on steadily, as if no one on board was aware of the presence of the boat of a British man-of-war. The boat rapidly came up with her. As they drew near, Jack remarked that her decks were crowded with a very ill-looking set of ruffians, but he cared little for that, and he knew that every man in the boat would be ready to attack even twice as many as there were there. They had got up to within a hundred yards of the schooner without any notice being taken of them. "Give way, my lads; we'll be alongside in a moment," shouted the lieutenant.