The party on the hill were at first doubtful whether they ought to follow the fugitives, as Desmond had suggested. Tom, however, thought that they decidedly ought to prevent any slaves who might be landed from escaping. One of the dhows was seen hoisting her sail. Having cut her cable, she stood out to sea, while the other two, in order to give her a better chance of escaping, commenced firing at the boat, expecting that she would at once attack them. The lieutenant, however, had made up his mind to have all three, and, disregarding their shots, he pulled away after the first, at the same time firing his bow-gun at her rigging. She was a fast vessel, and was leading the boat out of harbour. The other two dhows, seeing this, began to hoist their sails for the purpose of slipping out astern of her. As he might possibly lose all three, the lieutenant now put back, and managed to run on board one of the dhows. The Arabs fought desperately, and it seemed doubtful who would gain the victory. "I wish we were on board to help them!" exclaimed Desmond; "if I thought we could swim as far, I should propose going off to her." "Better stay where we are," said Tom; "we shall have work enough to do. See, the other dhow is coming round with the intention of running on shore; probably those on board don't see their friends scampering off, and they hope to re-land their slaves. It is fortunate we are here to prevent them escaping; perhaps they have been so busily engaged that they may not have seen us, and I propose that we hide ourselves behind those rocks out there, and, if the slaves land, we can rush out and surprise them." The plan suggested by Tom was instantly put into execution. Notwithstanding the opposition of the crew, the dhow attacked by the lieutenant was quickly captured, and again brought to an anchor; when, leaving some of his people on board, he made sail after the first dhow, which there was still a possibility he might overtake. The midshipmen could hear his gun rapidly fired, showing that he was trying to bring down her sail. The last of the three dhows had now stranded, and the cries and shrieks which arose showed that the Arabs were throwing the unfortunate blacks into the water, and compelling them to make their way on shore. Tom and Desmond agreed that it would be no easy matter to stop the blacks and to fight the Arabs at the same time, as they would be certain to try and make off with as many of the negroes as they could. Looking out from their hiding-place, they saw the beach covered with blacks, who had swum and waded on shore; but the Arabs themselves were waiting on board till all were out of the vessel, intending to come on shore in their boat. Probably they expected that their friends would hurry down and assist them in securing their captives.