And a moment later, amidst a cloud of dust, the raiders were galloping madly across the plain, and out from the concealment of the reeds along the river, crept a party of black warriors toward the spot where the golden ingots of Opar lay piled on the ground.
Werper had still been in advance of Achmet Zek when he reached the forest; but the latter, better mounted, was gaining upon him. Riding with the reckless courage of desperation the Belgian urged his mount to greater speed even within the narrow confines of the winding, game trail that the beast was following.
Behind him he could hear the voice of Achmet Zek crying to him to halt; but Werper only dug the spurs deeper into the bleeding sides of his panting mount. Two hundred yards within the forest a broken branch lay across the trail. It was a small thing that a horse might ordinarily take in his natural stride without noticing its presence; but Werper’s horse was jaded, his feet were heavy with weariness, and as the branch caught between his front legs he stumbled, was unable to recover himself, and went down, sprawling in the trail.
Werper, going over his head, rolled a few yards farther on, scrambled to his feet and ran back. Seizing the reins he tugged to drag the beast to his feet; but the animal would not or could not rise, and as the Belgian cursed and struck at him, Achmet Zek appeared in view.
Instantly the Belgian ceased his efforts with the dying animal at his feet, and seizing his rifle, dropped behind the horse and fired at the oncoming Arab.
His bullet, going low, struck Achmet Zek’s horse in the breast, bringing him down a hundred yards from where Werper lay preparing to fire a second shot.
The Arab, who had gone down with his mount, was standing astride him, and seeing the Belgian’s strategic position behind his fallen horse, lost no time in taking up a similar one behind his own.
And there the two lay, alternately firing at and cursing each other, while from behind the Arab, Tarzan of the Apes approached to the edge of the forest. Here he heard the occasional shots of the duelists, and choosing the safer and swifter avenue of the forest branches to the uncertain transportation afforded by a half-broken Abyssinian pony, took to the trees.
Keeping to one side of the trail, the ape-man came presently to a point where he could look down in comparative safety upon the fighters. First one and then the other would partially raise himself above his breastwork of horseflesh, fire his weapon and immediately drop flat behind his shelter, where he would reload and repeat the act a moment later.
Werper had but little ammunition, having been hastily armed by Abdul Mourak from the body of one of the first of the Abyssinians who had fallen in the fight about the pile of ingots, and now he realized that soon he would have used his last bullet, and be at the mercy of the Arab—a mercy with which he was well acquainted.