Thanking the girl with a glance, Bob sprang over the barricade, and, with a parting order to Ah-Sam to remain with the ladies, set off to join his late enemy. At the mouth of the gully he found that the Chunchuses had taken up positions behind every available rock. They were somewhat tightly packed, and as some of them moved from their places to meet their returning leader, and for a moment left cover, the Russians began to take snap shots at them from the crest of a hillock about six or seven hundred yards away. One man was hit just as Bob reached the band. There was a reply from several of the Chunchuses; but it was clear that they were hopelessly outranged. Their muskets did indeed carry the distance of the Russian position, but with no accuracy, and as the Russians were careful to present no considerable target, they were unlikely to suffer any loss.

Peering cautiously round the edge of a boulder, Bob looked across the valley in the direction pointed out to him. At first he could see nothing; then, on the crest of the hillock, he saw one or two moving objects which by and by resolved themselves into the caps of men on the other side. He wondered why the Russians, armed as they were with good weapons, did not advance boldly to the attack; but the explanation soon suggested itself. The horses of the Chunchuses having been stampeded, escape for the latter was impossible. The Cossacks recognized that they had them in a trap, but were disinclined to throw away lives by coming to close quarters in broad daylight with a strongly entrenched enemy. At nightfall, however, the odds would be all in their favour. They outnumbered the Chunchuses by at least two to one; under cover of night they could easily rush the position through the wide gaps between the boulders; and in a hand-to-hand fight their superior numbers were bound to tell. Bob had no doubt that they would defer their attack until night, and that was a serious danger to be provided against.

He was still watching the hillock, wondering how many men were encamped on the farther slope, when he noticed a dark shape rise upon the crest. Its outlines were clearly visible in contrast with the snow-covered ground, and in a moment Bob recognized the form as the head and shoulders of a Manchu. The man had apparently just spread his cloak before him, for he bent down face forwards, until only his head was visible, a dark motionless patch at the summit of the hill. A minute or two passed, then Bob saw a faint puff of smoke just below the crouching Manchu, and immediately afterwards a metallic "splat" was heard on the rock close to Bob's elbow. The man had evidently posted himself with the object of taking pot-shots at any of the Chunchuses who incautiously afforded him a target. His rifle was a good one, and that he was a good marksman was soon proved, for a second puff of smoke was followed, not by the sound of a bullet striking the rock, but by a howl of pain from one of the defenders, whose arm, overlapping the edge of the rock behind which he stood, had been pierced by the Manchu's shot. Only half a minute later, a third shot was even more accurate; a man's head showed above a rock, and with a suddenness that startled everyone he fell back, dead.

The movements which had exposed the defenders to the aim of the Manchu marksman were partly due to the impatient rage of the Chunchuses at their inability to retaliate. Bob saw that a succession of such incidents would destroy their nerve and demoralize them. He was himself a good marksman; at eight hundred yards he had more than once scored a possible on the butts at Darnley; and the sight of the dead man by his side banished his last feeling of compunction at taking an active part. Removing his cloak and cap to reduce his height and bulk as much as possible, he cautiously made his way to the boulder at which the Chunchuses were least huddled. As he ran across a few yards of exposed space, bullets pattered all around him; a man at the edge of the boulder for which he was making raised his hand to his cheek, and withdrew it covered with blood; a splinter of lead or rock had inflicted a slight jagged wound. The man looked at his hand with stolid indifference, and wiped it on his coat. It was evident that there were other marksmen on the crest of the hill, though only the Manchu was in sight. This incident had the curious effect of steadying Bob's nerve, and when he reached the boulder he was able to take a quiet look round.

A few feet to the right there lay an isolated rock much lower than the one whose shelter he had gained. Throwing himself flat on the ground, he crawled slowly forward, and noticed when he came to the smaller boulder that, still farther to the right, and a little in advance, there was a yet smaller rock, the lateral interval between the two being so narrow that he thought it unlikely he could be seen by the Russians if he used it as a peep-hole. It turned out as he surmised. He found that, while himself invisible, he commanded a view of about one-sixth of the space occupied by the Russians. As he looked, he saw that the Manchu who had been so troublesome had disappeared; the line of the hill-crest was unbroken. Bob feared that the man had escaped him, but in a moment he caught sight of his head and shoulders again, at a point somewhat to the left of his former position. He lowered himself as before, and bent forward on his elbow, waiting a favourable opportunity to test his marksmanship. The moment came; some incautious Chunchuse had no doubt exposed himself, for Bob saw the Manchu lift his rifle in the attitude of taking aim. He was destined never to pull the trigger. From his first movement Bob had covered him; while he was still aiming, the crack of a rifle was heard in the gully, and the Manchu's head fell forward, his rifle forming a dark streak on the snow. So instantaneous had been the effect of his shot that Bob was for the moment doubtful; but it was impossible to mistake the attitude of the inert form on the hillside. The man was dead.

The fact came home to Bob with a sort of shock. A soldier in the heat of battle has no time to reflect; his duty is to shoot straight and keep his nerve. But this single shot had not been fired in the rush of fight; it had scarcely caused his nerves to tingle more than in a keenly-contested musketry competition at home. For the moment he felt guilty as though he had committed a crime, and, rifle in hand, stared spell-bound at the prostrate figure. Then he was startled from his reverie by the sound of a hail of bullets whistling through the air and pattering on the rocks, and around him the discharge of a dozen antiquated pieces within the space of a few yards filled the air with the pungent smell of war.

After some minutes the din ceased. For an hour afterwards the firing was merely spasmodic. Bob was confirmed in his conclusion that the Russians were only putting in time until nightfall. Knowing that it would be impossible to hold the wide gaps at the mouth of the gully against a rush of superior forces, he saw that sooner or later the Chunchuses would have to take refuge higher up; but he was anxious to defer this movement, and cast about for some means of at least inflicting a temporary check upon the enemy. The Chunchuses themselves were making no preparations for the changed conditions that must arise, and being ignorant of their language, Bob was unable to consult with them. He therefore called Ah-Sam to his side, and through him asked the leader of the brigands what he proposed to do. The man replied that when night came he meant to retreat up the gorge behind the barricade; his men were too few to hold their present position; they would be overwhelmed at the first assault. Bob pointed out that it was bad policy to retire within their inmost defences except as a last resource. Cooped up in the narrow space, above, they would be in desperate straits if the enemy found a means of climbing the hills and taking them in the rear. The man at once answered that the hills were unscaleable. Nobody had ever been known to ascend them from this side. He was ready to make a stand at the mouth of the gully if it were possible, but the honourable stranger himself saw that it was out of the question.

Bob considered for a few moments. Dusk was creeping on, and if anything was to be done it must be done quickly.

"Tell him," he said at length to Ah-Sam, "that if he and his men will do what I ask them, we can make this position very strong. It will not take longer than about half an hour."

The Chunchuse at once agreed, and Bob proceeded to explain his plan. As soon as it was dark enough he proposed to send out ten of the best-armed and most skilful marksmen in skirmishing order to a distance of a hundred yards beyond the mouth of the gully, with orders to give instant warning of the enemy's approach. Twenty of the rest were to act as a reserve behind the boulders. There were some thirty men left; these he proposed to divide into squads of five, and they were to roll or drag towards the entrance of the ravine the loose boulders that lay scattered along the banks of the stream above. The reserve meanwhile would load the muskets of the whole body, and hold these in readiness for instant use at various points, to which the workers would hasten, each to his appointed spot, at the first alarm.