But though the Arab fusillade was almost innocuous, it harassed the troops, keeping them on the alert all night. And when, with the first streaks of dawn, the dreary march began, all traces of the foe had disappeared. All the morning dragged along, till fatigue and the heat of the sun compelled the mid-day halt. Then forward again till dark; and no wells reached! Hardly a drop of water left for each man! Several had dropped and died in the course of that day's march, and several horses. The bugle bands, which had been so cheery in the start, were silent now; the poor fellows were too parched to blow their instruments. Even the tam-tams were silent. Not that either would have been prudent, for though, doubtless, they were never lost sight of by the enemy's scouts, there was no advantage in publishing their whereabouts. Harry was on outpost duty that night, and when the firing was renewed, which happened soon after dark (though no enemy had been sighted all day), he, not being hard pressed, would not withdraw his men. The stars were very bright, and objects were distinguishable at about thirty yards distance; perhaps further by Harry, who was particularly clear of vision, that being the reason, possibly, of his fine shooting. The Arabs got closer to the rocks, amongst which the outpost was situated, with sentries at intervals connecting it with the square. Harry felt savage with thirst, fatigue, and this aggravating annoyance, and was strongly tempted to try and make an example. He took a rifle from one of his men, and began stalking carefully in the direction of the flashes; not directly towards them, of course, which would have been trying to meet the bullets, but on the flank. Crouching down under a sand ridge, he got pretty close, crawled a little nearer on his hands and knees, and peered forwards. There was a flash and a report quite near to him, and then Harry could plainly distinguish the man kneeling up, withdrawing the old cartridge from his Remington. He levelled his rifle, but could not see the fore-sight, so as to align it with the object. For a moment he was nonplussed, but suddenly remembered having read of a dodge for night shooting, and resolved to try it. He had in his pocket a small box of matches, and, taking one of these, he broke the end off and rubbed in on the fore-sight very gently, careful not to let it explode, and succeeded in making the little projection so luminous that he could align it with the back-sight and the Arab's body. Then he pulled the trigger, and saw the dark figure leap forward and fall prone. Saw it, indeed, but only in a fraction of a second, for he stole back to the sand ridge, slipping in another cartridge as he went.