John perceived in a moment that the work of transporting the ivory across the river gave him an opportunity of taking the enemy at a disadvantage. Running back to the top of the hill, careful not to come within sight of the scouts, he reached a point whence he could overlook the village and where he was himself in full view from it. The moment he arrived there he knew that he had been seen, for Ferrier waved his hand above his head. John immediately semaphored with his arms, asking Ferrier to bring out all the men except a few left to guard the village, and to join him on the hill-top. In ten minutes they were with him. Then, descending the western slope of the hill, invisible to the enemy, they worked their way through the belt of trees on the river-bank until they arrived within a furlong of the ford. Juma’s porters were staggering down the knoll under their loads--great tusks from six to nine feet long. To advance further without being discovered was impossible: the two scouts were full in the path. John gathered his party just within the belt of trees, and in a whisper told them what to do. Then, at his word, they dashed after him from cover, yelling at the top of their voices, the askaris firing their rifles as they ran, and reloading. There was little chance of the shots taking effect, but John reckoned on them to demoralize the enemy. The result surpassed his anticipations. The scouts stood for a moment as if rooted to the ground with amazement; then they flung down their rifles and fled like hares to the spot where Juma was indicating the ford. At the same instant the porters dropped their loads with a yell of fright, and made for the river, into which they cast themselves, careless of its depth, and of the crocodiles that might be lurking expectant of a victim. Juma had his arm in a sling: the other Swahilis raised their rifles, and fired, each one wild ineffectual shot, at the advancing company. Then, utterly confounded by this amazing attack from an enemy whom they supposed to be far away, they rushed in a body to the river, sped by a volley of bullets and arrows. Half wading, half swimming, they gained the further bank, and by the time John and his men came to the ford, they had disappeared with all their men into the undergrowth.