These thoughts suggested the possibility that if Nat-ul had found recognition among the strangers upon an equal footing with them that she, too, might have those attributes of superiority which the strangers claimed, and if such was the fact it became evident that she would consider Nu from the viewpoint of her new friends—as an inferior.
Such reveries made Nu very sad, for he loved Nat-ul just as you or I would love—just as normal white men have always loved—with a devotion that placed the object of his affection upon a pedestal before which he was happy to bow down and worship. His passion was not of the brute type of the inferior races which oftentimes solemnizes the marriage ceremony with a cudgel and ever places the woman in the position of an inferior and a chattel.
Even as Nu pondered the puzzling questions which confronted him his eyes and ears were alert as he sped along the now fresh trail of the caravan. Every indication pointed the recent passing of many men, and the troglodyte was positive that he could be but a few hours behind his quarry.
A few miles east of him the rescue party from the Greystoke ranch were pushing rapidly ahead upon a different trail with a view to heading off the Arabs. Ibn Aswad had taken a circuitous route in order that he might pass around the country of the Waziri, and with his slow moving slave caravan he had now reached a point but a few days' journey in a direct line from the ranch. The lightly equipped pursuers having knowledge of the route taken by the Arabs from the messenger who had come to seek their assistance had not been compelled to follow the spoor of their quarry but instead had marched straight across country in a direct line for a point which they believed would bring them ahead of the caravan.
Thus it was that Nu and Terkoz, and the party of whites and Waziri from the ranch were closing in upon Ibn Aswad from opposite directions simultaneously; but Nu was not destined to follow the trail of the raiders to where they were still engaged in repelling the savage attacks of the fierce Wamboli, for as he trotted along with the dog at his side his quick eyes detected that which the hound, with all his wondrous instinctive powers, would have passed by, unnoticing—the well-marked prints of the hoofs of two donkeys that had come back along the trail since the caravan had passed.
That they were donkeys belonging to the Arabs was evident to Nu through his familiarity with the distinctive hoof prints of each, which during the past three days had become as well known to him as his mother's face had been. But what were they doing retracing the way they had but just covered! Nu halted and raised his head to sniff the air and listen intently for the faintest sound from the direction in which the beasts had gone when they left the old trail at the point where he had discovered their spoor.
But the wind was blowing from the opposite direction, so there was no chance that Nu could scent them. He was in doubt as to whether he should leave the trail of the main body and follow these two, or continue on his way. From the manner of their passing—side by side—he was convinced that each carried a rider, since otherwise they would have gone in single file after the manner of beasts moving along a none too wide trail; but there was nothing to indicate that either rider was Nat-ul.
For an instant he hesitated, and then his judgment told him to keep on after the main body, for if Nat-ul was a prisoner she would be with the larger force—not riding in the opposite direction with a single guard. Even as he turned to take up the pursuit again there came faintly to his ears from the jungle at his left the sound of a human voice—it was a woman's, raised in frightened protest.
Like a deer Nu turned and leaped in the direction of that familiar voice. The fleet wolfhound was put to it to keep pace with the agile caveman, for Nu had left the earth and taken to the branches of the trees where no underbrush retarded his swift flight. From tree to tree he leaped or swung, sometimes hurling his body twenty feet through the air from one jungle giant to another. Below him raced the panting Terkoz, red tongue lolling from his foam flecked mouth; but with all their speed the two moved with the noiselessness of shadowy ghosts.
At the edge of the jungle Nu came upon a park-like forest, and well into this he saw a white robed Arab forcing a woman slowly backward across his knee. One sinewy, brown hand clutched her throat, the other was raised to strike her in the face.