As Number Thirteen arose to continue his search for Professor Maxon his quick ear caught the shuffling of bare feet upon the verandah. As he paused to listen there broke suddenly upon the still night the hideous war cries of the Dyaks, and the screams and shrieks of their frightened victims in the campong without. Almost simultaneously Professor Maxon and Sing rushed into the living room to ascertain the cause of the wild alarm, while at the same instant Bududreen’s assassins sprang through the door with upraised krisses, to be almost immediately followed by Muda Saffir’s six Dyaks brandishing their long spears and wicked parangs.

In an instant the little room was filled with howling, fighting men. The Dyaks, whose orders as well as inclinations incited them to a general massacre, fell first upon Bududreen’s lascars who, cornered in the small room, fought like demons for their lives, so that when the Dyaks had overcome them two of their own number lay dead beside the dead bodies of Bududreen’s henchmen.

Sing and Professor Maxon stood in the doorway to the professor’s room gazing upon the scene of carnage in surprise and consternation. The scientist was unarmed, but Sing held a long, wicked looking Colt in readiness for any contingency. It was evident the celestial was no stranger to the use of his deadly weapon, nor to the moments of extreme and sudden peril which demanded its use, for he seemed no more perturbed than had he been but hanging out his weekly wash.

As Number Thirteen watched the two men from the dark shadows of the room in which he stood, he saw that both were calm—the Chinaman with the calmness of perfect courage, the other through lack of full understanding of the grave danger which menaced him. In the eyes of the latter shone a strange gleam—it was the wild light of insanity that the sudden nervous shock of the attack had brought to a premature culmination.

Now the four remaining Dyaks were advancing upon the two men. Sing levelled his revolver and fired at the foremost, and at the same instant Professor Maxon, with a shrill, maniacal scream, launched himself full upon a second. Number Thirteen saw the blood spurt from a superficial wound in the shoulder of the fellow who received Sing’s bullet, but except for eliciting a howl of rage the missile had no immediate effect. Then Sing pulled the trigger again and again, but the cylinder would not revolve and the hammer fell futilely upon the empty cartridge. As two of the head hunters closed upon him the brave Chinaman clubbed his weapon and went down beneath them beating madly at the brown skulls.

The man with whom Professor Maxon had grappled had no opportunity to use his weapons for the crazed man held him close with one encircling arm while he tore and struck at him with his free hand. The fourth Dyak danced around the two with raised parang watching for an opening that he might deliver a silencing blow upon the white man’s skull.

The great odds against the two men—their bravery in the face of death, their grave danger—and last and greatest, the fact that one was the father of the beautiful creature he worshipped, wrought a sudden change in Number Thirteen. In an instant he forgot that he had come here to kill the white-haired man, and with a bound stood in the center of the room—an unarmed giant towering above the battling four.

The parang of the Dyak who sought Professor Maxon’s life was already falling as a mighty hand grasped the wrist of the head hunter; but even then it was too late to more than lessen the weight of the blow, and the sharp edge of the blade bit deep into the forehead of the white man. As he sank to his knees his other antagonist freed an arm from the embrace which had pinioned it to his side, but before he could deal the professor a blow with the short knife that up to now he had been unable to use, Number Thirteen had hurled his man across the room and was upon him who menaced the scientist.

Tearing him loose from his prey, he raised him far above his head and threw him heavily against the opposite wall, then he turned his attention toward Sing’s assailants. All that had so far saved the Chinaman from death was the fact that the two savages were each so anxious to secure his head for the verandah rafters of his own particular long-house that they interfered with one another in the consummation of their common desire.

Although battling for his life, Sing had not failed to note the advent of the strange young giant, nor the part he had played in succoring the professor, so that it was with a feeling of relief that he saw the newcomer turn his attention toward those who were rapidly reducing the citadel of his own existence.