Kirby grinned.

"They are the same kind I used, and then some. With these weapons we can do what we never could with the smaller one. How did they get here?"

"They came when I was much younger," Naida answered with a shade of sadness in her voice. "The men who had them penetrated the Valley of the Geyser, coming by a different route from the one you followed. When the Duca learned they were there, he sent such men of the race as were still able to fight to kill them. That order of the Duca's was one of the first things to turn me against him. The men were not harming us, and they should have been permitted to go away. But the Duca insisted that they be killed, and in the fight were lost eight of our youngest and strongest men."

Kirby stooped to inspect the rifles.

"Has no one learned to use these weapons?"

"No," Naida answered. "The Duca kept them for himself."

"We think," put in Ivana, "that he hoped to learn to use them, and was afraid for us to have the knowledge."

Kirby filled one of the magazines, and felt the heft of the gun with pleasure.

"Very well," he said. "It looks to me as though your time to learn the art of shooting has come at last. Come, I think we had better be getting back downstairs."

Kirby took three guns himself, and with the others lugging the rest, they started back. The parchment rolls, he decided, must be left for examination later on.

They were all elated when they rejoined the girls in the prayer chamber, and high spirits were still further increased by the report, promptly given, that all had remained quiet in the amphitheatre. Save only for the presence of Elana, radiant and calm in death, the give and take of questions would have been accompanied by actual gaiety.

But the time of peace did not last much longer. While Naida was in the midst of answering incessant questions about the wonders of the jewel chamber, Kirby heard a sound from below, and suddenly went over to the downward-winding steps.

"Listen," he called sharply back to the others.

He had not been mistaken. Many footsteps echoed from the amphitheatre, and he made out that the caciques were coming toward the bolted gate at the foot of the steps. While he listened, and Naida came eagerly to his side, silence fell.

But then clear words came up to them.

"Let the upper-world man come to the foot of the steps," called the Duca. "I have an offer to make him!"

CHAPTER VII

To himself Kirby chuckled. Such real entreaty filled the Duca's voice that there seemed no danger of further treachery from him at the moment.

With a grin, Kirby took Naida's hand and led her down the steps, unbolting each bronze gate but the last.

"What do you want?" he asked in a cool voice a moment later, when he stopped on the final step and faced the Duca from behind the protection of the final gate.

Clearly the parley was going to be a blunt one.

"I want you to leave our world," the Duca rumbled promptly.

He was drawn up in a posture intended to display dignity. But his left cheek, where Kirby had hammered him, was pulpy and discolored, and somehow he seemed to Kirby more than ever merely human.

"Under what conditions am I to leave?"

"If you will vacate my tower at once," the Duca said with a flush of eagerness which he could not conceal, "I will permit Naida and one of my caciques to escort you back to the Valley of the Geyser. I will also give you directions by which you may travel in safety from there to the outer world."

Kirby, wanting more details, made himself seem thoughtful.

"And what will happen to me, and to the girls, if I decline?"

Encouraged, the Duca made an impressive gesture.

"You will be left in the tower to die of starvation. Mine is not a complicated offer. It should require no complicated decision. What is your answer?"

Kirby dropped his carefully a.s.sumed mask of thought.

"My answer is this," he lashed out. "I will not leave! The tower is ours, and we will hold it until you have accepted Naida's peace terms on your priestly oath!"

"But if you stay in the tower you will starve!" thundered the Duca.

"No, we won't starve! We won't starve because we eat the food of Ducas!"

In silence, Kirby took from his pocket a strip of the sacred Peyote and bit off one end of it. Suddenly the hush in the amphitheatre became complete. As he watched Kirby chewing, the Duca gasped and choked.

"Moreover," Kirby announced with slow emphasis, "I have taken possession of the weapons which you took from men of the upper world, and which have already sent men of your race to their death. I have no wish to kill either you or your caciques, but if you do not presently discuss peace with me, you will certainly find yourself embroiled in a struggle more bitter than the mild one of this morning."

With that said, he swung on his heel, and taking Naida's hand again, started with her up the steps.

"I have nothing more to say," he called over his shoulder to a Duca whose white haired majesty had been stripped from him.

"We're getting on," he whispered to Naida a moment later. "The best thing for us is just to sit still now, and wait."

With the questions he wanted to ask Naida about her world becoming insistent, he found himself, as a matter of fact, glad for the prospect of further respite. As both of them rejoined the girls in the Duca's prayer chamber, the first thing he did was to take from his tunic the cylinder of gold which he had found in the canyon.

"What is this, Naida?" he asked, hoping to start talk that would make all of them forget the Duca and politics, and at the same time help him to learn much that he wished to know.

But a queer thing happened. Naida's reaction to the carven gold was as unexpected as it was marked.

"_Oh!_" she cried in a voice which suddenly trembled with surprise, with blank dismay. Somehow, the cylinder of gold brought to her face things which not even the Serpent's head of the diamond had evoked.

The prospect of a long session of talk began to fade out in Kirby's mind.

"But Naida, whatever is there about this fragment of gold to startle you as it does?"

By this time all of the thirty-odd other girls had come flocking about them, and all were staring at the cylinder as fascinatedly as Naida.

"Do you see what he has there?" Naida finally asked, ignoring Kirby in her continued excitement.

"Do we _see_?" answered the girl she had addressed. "Naida, surely it is the carving which was lost!"