But at this moment a shout was raised that the enemy were attacking from the other side of the island. Ferrier instantly sprang down from his perch, and calling on his men to follow him, rushed across the enclosure to repel this new assault. John, perforce confined to his post, ordered his company to join the others, while he alone kept watch on the causeway. Being undisturbed, he had leisure to consider what the enemy’s plan had been. He could not doubt that they had arranged in their council of war that the Swahilis with their party should cross the river and creep under cover of the trees and scrub to the western shore of the pool. The intention had certainly been that the attack should be made on both sides of the fort simultaneously. If it had been perfectly timed, and begun at a concerted signal, the plight of the garrison might have been very serious. But careful co-operation is impossible to the negro. The men on the eastern side had rushed blindly to the assault, heedless of what the other party was doing. These, led by Juma himself, had made their way unobserved to the place arranged, and swum the pool under cover of the fringe of trees which were still left standing. But only one or two had landed when they heard the din of fighting on the other side. Juma, more intelligent than the negroes, had seen at once the necessity of striking while the garrison was engaged in that quarter. But he was compelled to wait until he had sufficient support, and by the time he had gathered a score of men about him the eastern attack was beaten off, and the defenders were hurrying to meet him. When Ferrier reached the wall, he saw the Swahilis and their followers coming up the slope in a straggling body. The moment they perceived him, they halted; those who had rifles fired them off, too hurriedly to take effective aim; the others let fly a shower of arrows. Then they all rushed forward, a disorderly shouting mob. Ferrier fired his rifle, but his men had not had time to reload, having hastened from the bastion immediately after the final volley upon the causeway. The enemy had come within about twenty yards of the wall when Ferrier, whipping out his revolver, snapped a shot at Juma and winged him. The big man fell to the ground with a howl of pain; his men halted in consternation. This was not the easy victory they had been promised. Their hesitation was fatal. It had given time to the men on the wall to load their pieces. A general fusillade spattered bullets among the waverers; it quickened them into action, but instead of continuing their advance they turned tail and bolted down the slope, pursued by a shower of arrows. Juma had risen, and struggled along with the help of two of his kind. They fled with all speed among the trees, and the garrison, yelling with delight, saw them no more that day. CHAPTER THE TWENTY-SECOND--A Counter Stroke