They halted, and strained eyes and ears. They could see nothing, owing to a few scattered hummocks in front, but they caught distinctly the irregular thuds of distant rifle-firing. That was enough. Careless of the rough going, or the condition of their camels at the close, they raced ahead madly. There was no question now of the odds they might have to face. Though the Hadendowas were well armed, and outnumbered them by two to one, Royson felt that the presence of the Englishmen, all of whom were ex-sailors of the Royal Navy, would nerve his Arab helpers to attack and defeat Alfieri's band of cutthroats. Moreover, von Kerber and his small escort were evidently making a fight of it, and, while daylight lasted, the Hadendowas, once discovered, would endeavor to shoot down their quarry at a safe range rather than undergo the certain loss of an open assault.

How long could the unequal contest be maintained—that was the question that tortured Dick. Many times during that wild ride he asked it, and the only answer he received was given by despair. It came to him through a spume of dust and flying sand, and the rattle of accouterments, and the plaints of frenzied camels, and the yells and curses of the strangely-assorted company of deliverers as they plunged across the desert towards the Well of the Seven Hills. And its discordant shriek was, "Too late! Too late! The gods have frowned on the pillagers of Saba, and the wrath of the gods is everlasting!"

CHAPTER XVIII

THE FINDING OF THE TREASURE

Royson, a soldier by instinct if not by training, realized the folly of dashing blindly into a fray the nature of which was hidden from him. Though the plight of his erstwhile companions must be desperate—though the lengthening shadows warned him that the time ran short—it was all-important that he should learn the manner and direction of the attack, and the means adopted by von Kerber for repelling it, ere the presence of the relieving force became known. He had heard much of the fighting qualities of the Hadendowas. They were brave, but they were not given to throwing their lives away uselessly. Judging by the steady crackling of musketry, they were "eating up" the smaller contingent with the least possible risk to themselves. They were quite capable of delivering a fierce charge when they witnessed the approach of the rescuers, or, on the other hand, they might allow the newcomers to combine with von Kerber, and depend on their rifle fire to dispose of the reinforced defense. He must decide quickly, once he knew the conditions, and it was imperative, therefore, that something in the nature of a reconnaissance should be conducted from the shoulder of the rising ground which terminated the plateau. By shouting to Abdur Kad'r and signaling to his own men, Dick managed to check the furious onward rush of the detachment. It was no easy matter to stop the excited camels. The stubborn brutes were equally unwilling either to travel at such a rate or to abandon it. Before the sky-line was reached, however, they were pulled up. Royson, Abdur Kad'r and Abdullah dismounted, and ran rapidly to the crest, dodging behind rocks and broken ground until they secured a clear view of the panorama in front. It was a singular and, in one respect, a disconcerting scene that met their anxious gaze.

The only practicable road descended rapidly towards an immensely wide and shallow depression. Conceivably, this basin might have been formed by the subsidence of the land all round an extinct volcano, whose one-time activity was revealed by a cluster of small cones in the distance. Running due east, and passing north of the crater thus curiously marked, was the arid river-bed which created the oasis, and rendered possible the well which gave its name to the place. Unfortunately, the group of lava hillocks was situated much beyond the center of the hollow. They were commanded by small hills on three sides, and, though capable of defense in some respects, they offered the grave disadvantage of being in a circle. Consequently, the only section secure from an enemy's fire was that on the western side, and it was evident that the defenders had found this to be actually the case. They were, of course, clearly visible from the ridge, where, unknown to them, the leader of a strong relief was then lying in the cleft of a rock split to its base by extremes of heat and cold.

Dick counted the cones. There were seven, of them. Though fully a mile and a half distant, he could see Mrs. Haxton sitting between two huge boulders. Von Kerber was near her, and the few Arabs with them were scattered among the rocks in positions whence they could return the incessant fusillade poured on them from the hills. Their camels were huddled in a hollow between the two westerly mounds, and, so far as Royson could judge, the little party had not yet sustained many casualties. But the tactics of their assailants were quite obvious. The Hadendowas, silently and unseen, had occupied the higher ground on the north, east, and south. They had probably stampeded the unsuspecting kafila from the open oasis, because a couple of tents and some camp equipage still stood there, and it was their intent to creep nearer, pushing the horns of an ever-closing crescent steadily westward, until a junction effected just before sunset would permit of a successful rush. Indeed, all doubt on this point was dispelled by the discovery of two strong companies of Hadendowas gathering on the reverse slopes of the nearest hills. They were mounted, mostly on camels. They did not reveal their existence by taking part in the firing. They seemed to be waiting some signal before they rode out into the plain, to complete the merciless ring which would then surround the doomed occupants of the Seven Hills.

There was not a moment to be lost, and Royson, having formed his plan, put it into instant operation. He and the six sailors would be the first to cross the sky-line, while a few Arabs would accompany them, but hurry back as soon as they were visible, giving the impression that they had gone to summon others. The men from the Aphrodite would ride straight, at top speed, towards the beleaguered party. Two minutes later, Abdur Kad'r was to lead half his Arabs over the ridge and make for the enemy's right wing, while, after a similar interval, Abdullah, at the head of the remaining detachment, would similarly dash into sight and advance against the enemy's left. The opposing force would thus see three successive waves of rescuers, each apparently stronger than its predecessor, coming from the only direction whence succor was possible. Alfieri and his followers were well aware already of the strength of Mr. Fenshawe's expedition. If they imagined that it was advancing in its full numbers, they might break and run without firing another shot. If, however, they showed fight, Abdur Kad'r and Abdullah had most stringent orders not to pursue the flanking parties, which they would certainly drive in on the main body. They were to converge towards the hillocks, where Royson would, by that time, have brought hope and renewed courage to their hard-pressed friends. Then, granted that the Hadendowas dared a general attack, the whole force, rescuers and rescued, were to fall back, converting the struggle Into a rear-guard action, and compelling the Hadendowas to relinquish the advantage of the higher ground. Once they came into the open, Royson counted on the superior shooting of his six sailors—all marksmen of the Royal Navy—to turn the scale unmistakably in his favor, while his Arabs had the confidence of knowing that each mile they gained in the retreat brought them nearer the powerful caravan in the rear.

The scheme was excellent in every way. Under ordinary conditions it would have achieved success, but the sane mind can never take into reckoning the vagaries of the insane, and it is quite certain that Alfieri, worn alike by hardship and long brooding over his wrongs, either went stark staring mad at the spectacle of relief being forthcoming for those whom he believed to be entrapped, or gave instant rein to the frenzy already consuming him.

At a moment, then, when it was suicidal to attempt an attack which his men had refused to carry out under the much less dangerous conditions that prevailed all day—it was ascertained afterwards that the first shower of bullets fell into the startled camp about ten o'clock that morning—at that moment, Alfieri, screaming curses in Italian and Arabic, called on those nearest to follow him, and rode out from the shelter of one of the small hills. In sheer excitement, a few Hadendowas obeyed his wild command. They had not far to go, but the rocky water-course barred the track and they must cross it slowly. Now, above all else, was the time for the sorely-tried little band under von Kerber to stand fast. They could have shot at their leisure Alfieri and each man of the half dozen who came with him. Already three groups of yelling men were stirring the dust into life as they scampered to the rescue across the comparatively level floor of the basin. In five minutes, or less, the Hadendowa attack would be rolled back into the hills, and neither friend nor foe had any other thought than that the whole of Mr. Fenshawe's kafila was pouring its irresistible power into the fray.