He led him to the far side of the chamber where, in the light of the cresset, Tarzan saw tier after tier of shelves, upon which were stacked small sacks made of skins. The old man set the cresset upon one of the shelves and taking a sack opened it and spilled a portion of the contents into the palm of his hand. “Diamonds,” he said. “Each of these packages weighs five pounds and each contains diamonds. They have been accumulating them for countless ages, for they mine far more than they can use themselves. In their legends is the belief that some day the Atlantians will return and they can sell the diamonds to them. And so they continue to mine them and store them as though there was a constant and ready market for them. Here, take one of the bags with you,” he said. He handed one to Tarzan and another to La.
“I do not believe that we shall ever leave the valley alive, but we might;” and he took a third bag for himself.
From the diamond vault the old man led them up a primitive ladder to the floor above, and quickly to the main entrance of the Tower. Only two heavy doors, bolted upon the inside, now lay between them and the terrace, a short distance beyond which the east gate swung open. The old man was about to open the doors when Tarzan stopped him.
“Wait a moment,” he said, “until the rest of the Gomangani come. It takes them some time to ascend the ladder. When they are all here behind us, swing the doors open, and you and La, with this ten or a dozen Gomangani that are immediately around us, make a break for the gate. The rest of us will bring up the rear and hold the Bolgani off in case they attack us. Get ready,” he added a moment later, “I think they are all up.”
Carefully Tarzan explained to the Gomangani the plan he had in mind, and then, turning to the old man, he commanded “Now!” The bolt slipped, the doors swung open, and simultaneously the entire party started at a run toward the east gate.
The Bolgani, who were still massed about the throne room, were not aware that their victims had eluded them until Tarzan, bringing up the rear with Jad-bal-ja was passing through the east gate. Then the Bolgani discovered him, and immediately set up a hue and cry that brought several hundred of them on a mad run in pursuit.
“Here they come,” cried Tarzan to the others, “make a run of it—straight down the valley toward Opar, La.”
“And you?” demanded the young woman.
“I shall remain a moment with the Gomangani, and attempt to punish these fellows.”
La stopped in her tracks. “I shall not go a step without you, Tarzan of the Apes,” she said. “Too great already are the risks you have taken for me. No; I shall not go without you.”
The ape-man shrugged. “As you will,” he said. “Here they come.”
With great difficulty he rallied a portion of the Gomangani who, once through the gate, seemed imbued but with a single purpose, and that to put as much distance between the Palace of Diamonds and themselves as possible. Perhaps fifty warriors rallied to his call, and with these he stood in the gateway toward which several hundred Bolgani were now charging.
The old man came and touched Tarzan on the arm. “You had better fly,” he said. “The Gomangani will break and run at the first assault.”
“We will gain nothing by flying,” said Tarzan, “for we should only lose what we have gained with the Gomangani, and then we should have the whole valley about us like hornets.”
He had scarcely finished speaking when one of the Gomangani cried: “Look! Look! They come;” and pointed along the trail into the forest.
“And just in time, too,” remarked Tarzan, as he saw the first of a swarm of Gomangani pouring out of the forest toward the east gate. “Come!” he cried to the advancing blacks, “the Bolgani are upon us. Come, and avenge your wrongs!” Then he turned, and calling to the blacks around him, leaped forward to meet the onrushing gorilla-men. Behind them wave after wave of Gomangani rolled through the east gate of the Palace of Diamonds, carrying everything before them to break at last like surf upon the wavering wall of Bolgani that was being relentlessly hurled back against the palace walls.
The shouting and the fighting and the blood worked Jad-bal-ja into such a frenzy of excitement that Tarzan with difficulty restrained him from springing upon friend and foe alike, with the result that it required so much of the ape-man’s time to hold in leash his ferocious ally that he was able to take but little part in the battle, yet he saw that it was going his way, and that, but for the occurrence of some untoward event, the complete defeat of the Bolgani was assured.
Nor were his deductions erroneous. So frantic were the Gomangani with the blood-lust of revenge and so enthused by the first fruits of victory, that they went fully as mad as Jad-bal-ja himself. They neither gave nor asked quarter, and the fighting ended only when they could find no more Bolgani to slay.
The fighting over, Tarzan, with La and the old man, returned to the throne room, from which the fumes of the smoke bombs had now disappeared. To them they summoned the headman of each village, and when they had assembled before the dais, above which stood the three whites, with the great, black-maned lion Jad-bal-ja, Tarzan addressed them.
“Gomangani of the Valley of the Palace of Diamonds,” he said, “you have this night won your freedom from the tyrannical masters that have oppressed you since far beyond the time the oldest of you may remember. For so many countless ages have you been
