"Let fly at the fellows," cried Tom. The men fired their muskets. "Now, lads, we'll be at them," shouted their young leader, and, springing up, he bounded over the rock, followed by Desmond and the four men, just in time to catch the leading Arab as his hand was on the edge of the platform. With a down-handed cut of his sword, Tom sent the Arab falling headlong down the cliff. The next met with the same fate, but the chief, who had allowed the other two to precede him, shouted to his followers to fire at the Englishmen. The order was obeyed, and a shower of bullets came whizzing by them. Tom, in return, fired at their leader, and, without stopping to see the effect of his shot, shouted to his men to fall back under cover before a second volley could reach them. Scarcely had they got under shelter when the Arabs again fired. He saw that his former manoeuvre would not be again executed with the same success. The death of two of their companions appeared to have damped the ardour of the Arabs, who remained perched about the rocks, waiting for an opportunity to pick off any of the defenders of the height who might venture to show themselves. This, however, neither Tom nor his companions intended doing. Tom had recovered his glass, which he had left behind, and had taken a glance over the ocean to the northward in the hopes of seeing the ship, believing that her appearance would very quickly induce the Arabs to hurry off. She was nowhere to be seen, though he caught sight of several dhows running to the northward. While thus engaged, the voice of the old chief was again heard, and though they could not understand his language, yet they judged from his tones that he was endeavouring to induce his countrymen to renew the attack. "It can't be helped," observed Tom calmly; "if they attempt to storm our position we must drive them back. Our wisest plan will be to keep under shelter as long as we can, and then to spring out on them as soon as they get their noses near enough." "Ay, ay, sir!" cried the men in cheerful tones; "we'll soon give them a taste of our cutlasses, and they'll not wish to have a second bite." Tom's suspicions were confirmed, when in another minute a hot fire was again opened, the bullets just clearing the edge of the platform; and directly afterwards the chief and several of his followers sprang up upon it. Once having gained possession of the ground, it was easy enough for the rest. Matters were now becoming far more serious than before. From another opening in the rock, Tom, although still concealed from the Arabs, was able to look down upon the anchorage. "Hurrah!" he exclaimed; "Mr Matson has not been asleep; there comes the boat from the island, and if the slavers are not sharp about getting under way, she'll have the whole of them; but one or two are pretty sure to be caught."