As he had hoped it would, the suggestion at last settled the matter. A moment later, as Naida nibbled her first bite, she smiled.
"Why, it—it's good!"
With the question of provisions settled at least for a time, Kirby's next thought was of the tower. The present lull of peace seemed made for exploration.
"Come along," he said to Naida, "we've plenty to do," and then, when he explained, they set out, accompanied by Nini, a cousin of Naida's, and Ivana, a younger sister.
All of the others remained with little Elana.
WHILE they climbed spiral stairs, Naida explained that the chamber they had just left was used by the Duca as a place in which he prayed before and after contacts with caciques or subjects. A sort of halfway station between earth and heaven, as it were, where the Duca might be purged of any sullying influence gained from human relationships.
At thought of the rank, egotistical hypocrisy implied by the story, Kirby smiled grimly. Then they came to a new door, heavier than that which barricaded the prayer chamber. Unlocked, the thing swung ponderously at Kirby's push, and with the three girls pressing close beside him, he entered—and stopped.
"Naida!" he gasped.
"Oh, oh!" she cried, and while Nini and Ivana gasped, she clapped her hands in an instinctive, feminine reaction of joy. "But there are things here which I believe none but the Ducas of our race have ever seen! Oh! Why, the sacred girdle is as nothing compared to this display!"
By "display" she meant a treasure which took Kirby's breath away, which made his heart act queerly.
The walls of the chamber were fashioned of polished blocks of obsidion on which stood out in heavy bas-relief a maze of decorative figures fashioned of pure, beaten gold—the same kind of gold which had gone into the making of the cylinder of gold. With his first glance at the gorgeously wrought motifs of Feathered Serpent and Sun and Moon symbols, Kirby knew to a certainty whence the golden cylinder had come originally.
But even the gold—literally tons of it there must have been—was nothing compared to the gems.
THEY were spread out in blinding array upon a great table in the center of the room. There were pearls as big as turkey eggs and whiter, softer than the light of a June morning growing in the East. There were rubies. One amongst the many was the size of a baseball and glowed like the heart of a red star. The least of the two or three hundred gems would have outclassed the greatest treasures of the Crown jewels of England and Russia combined.
Most overwhelming of all, however, was the jewel which rested against a square of black cloth all its own in the center of the table. While his heart still acted queerly, while Naida, Nini, and Ivana hung back, delighted, but still too bewildered to move, Kirby advanced and took gingerly in his hands a single white diamond about eighteen inches long, and almost as wide and deep as it was long.
The thing was carved with exquisite cunning to a likeness of the living head of Quetzalcoatl, the Feathered Serpent.
Kirby dared not guess how many pounds the carven hunk of flashing, blue-white carbon weighed. He knew only that like it there was no other diamond in the world, and that the thing was real. Naida and the two girls were silent now, and suddenly Kirby realized that to their awe of the gem was added awe of deepest religious nature. Slowly he put the diamond head of the Serpent back upon its square of cloth.
"We—we had heard that this thing
