The nearest hill was some four or five hundred yards away, and on this several of the Arabs could be seen. Sure that they were nearly out of gun-shot, they took but little pains to conceal themselves. Edgar rested his rifle on a stone and took a steady aim at three of them who were sitting together. He fired. A yell of dismay came across the air; two of the figures leapt to their feet and ran back. A moment later four or five others who had been firing from among the bushes also dashed away, while a triumphant yell rose from the zareba.

"That is one enemy the less," Edgar said, "and I don't think the others will trouble us much in future. They must know that they can be doing us no harm, and now they discover they are not going to have it all their own way we shall not hear much more of them."

Shots were indeed fired occasionally from the bushes and eminences, but the discharges were far apart, and seemed to be intended rather to show the defenders of the zareba that they were surrounded than for any other purpose. The day passed without any further event. As soon as the sun had fairly set the defenders sallied out and repaired the hedge. The enemy probably guessed that they were so employed, and kept up a much heavier fire than they had done during the day. Edgar, lying in the zareba, replied, steadily firing at the flashes, and after a time the firing of the enemy slackened, and the defenders, when they had completed the hedge, re-entered the zareba through a very narrow gap that had been left for the purpose, carrying with them one of their number whose leg had been broken just above the ankle by one of the enemy's bullets. Under the sheik's instructions some rough splints were made to keep the bone in its proper position, and bandages were then applied.

Four sentries were posted, one at each corner of the fort, and the rest of the garrison lay down to sleep. Twice during the night they sprang to their feet at the discharge of the gun of one of the sentries, but as no movement of the enemy followed they soon lay down again, supposing that either the alarm had been a false one, and that the sentry had fired at some low bush, or that, if he had really seen a man, the latter had made off as soon as he had discovered that the garrison were awake and vigilant. As soon as the moon set the sheik despatched one of the young men to the wady. His instructions were to crawl carefully, taking advantage of every bush until he deemed himself well beyond any of the enemy who might be watching, and then to start at full speed. If he were fired at, he was, if the enemy were still in front of him, to run back to the zareba; if they were behind him, to press forward at full speed.

For an hour after he had left the garrison listened anxiously. They were all under arms now, lest the enemy should try and attack during the darkness. No sounds, however, broke the stillness of the plain, and they were at last assured that their messenger had got safely through. For four days the blockade continued, an occasional exchange of shots being kept up. The dervishes, however, since they had learnt the range of Edgar's rifle, seldom showed themselves, but crept among the rocks and bushes, fired a shot, and then crawled off again to repeat the operation fifty or a hundred yards away. When the hedge had been repaired on the night after the fight the defenders buried their own dead in the sand a short distance off, and had dragged the bodies of their fallen enemies fifty yards away, as, had the siege lasted many days, the fort would have otherwise become uninhabitable.

In the morning one of the Arabs had yelled to the besiegers that the bodies were lying fifty yards away in front of the fort, and that four of them were free to come and carry them away or bury them as they chose. The invitation passed unregarded, but during the next night the bodies were all removed. The sentries were ordered not to fire if they heard any noise in that direction, for, as Edgar pointed out to the sheik, it was important that the bodies should be carried away. The next day several of the Arabs went out and raised heaps of sand over the horses that still lay just outside the hedge.

The fourth night after his departure the messenger returned with the news that the tribesmen, eighteen in number, had arrived in the afternoon. They would carry out the sheik's orders. They were mounting fresh camels just as he started. Nine of them would hide among the sand-hills two or three miles away, and would there remain for twenty-four hours so as to give time for the others to get up to the wells. The sheik commanding the party had suggested that soon after daybreak the defenders of the fort should sally out and advance in the direction where the dervishes' camp was situated, as if intending to make an attack. This would bring in all the enemy who might be scattered among the sand-hills near the zareba. As soon as the engagement began he, with his men, would fall upon the rear of the dervishes.

"Do you think that that is a good plan, Muley?"

"I think so, sheik. You see, if we merely wanted to defeat them one would not wish them to rally into one body; but as our great object is to prevent any from returning, it is much better to do as the sheik suggests and let them get all together."

The day passed as usual, and the next morning shortly before sunrise the defenders of the fort issued out. The assailants were on the watch, and from four or five different points round the zareba shots were fired. Taking advantage of every bush the Arabs advanced slowly under the direction of their sheik. The dervishes, believing that the garrison must have been driven from their defences by thirst, and that they were now in their power, rapidly gathered their force and advanced to meet their opponents. At first they did so carelessly, but they were checked by the fall of one of their leaders by a ball from Edgar's rifle. They then advanced a little more cautiously. Edgar kept close to the sheik.