Abruptly Croft became aware of the scrutiny of her eyes, for the space of a heartbeat, then they were again inspecting her girdle's fringe.

"Yes," he answered, sensing that once more she was groping for some sign in his words or manner. "Have you witnessed a game?"

Naia nodded, without looking up. "Robur insisted, after he had contrived to throw a ball through my chamber window and drop it into the mirror pool with a most surprising splash, to say nothing of waking me with the water in my face."


Croft smiled. He suspected Rob had been continuing his experiments with the intricacies of curves.

"Since then," Naia went on, "I have been seeking to aid him in the mornings with something he desires to learn. It seems that he declares a ball may be thrown so that it changes its direction in the air, and I confess that, watching one of the team pitchers whom he pointed out at a game, it appeared that it was done. We have risen and worked for several mornings together; but, besides breaking two windows and some flower urns, we have little to show for our pains. Gaya declares he will destroy the palace unless you teach him the trick on your return."

"I shall join you in the morning," said Jason, laughing, as her red lips smiled.

Naia regarded the arches of her pink feet, bared save for sandals of scarlet gnuppa leather, caught about her slender ankles by silver bands, to which were linked chains of silver running up on either side of the heel and between the toes. "Then," said she, "shall I let you take the ball when he throws it. I confess it burns my hands. As to this new light—what does it burn, since it neither smokes nor flames?"

"A substance," said Croft, "made from koal." And now as he spoke he watched his companion in turn. And suddenly he met her eyes in a glance that thrilled—a glance that spoke of recollection, that seemed for an instant to flash him a voiceless question, yet one whose meaning to him was plain. And for a moment it seemed that an actual question trembled on the lips of the perfect mouth he watched, before Naia spoke in an almost breathless fashion.

"Koal—the strange, black stone you have set men to digging in the region to the west? Jason—how knew you where to find what, before your coming, in all Aphur was unknown?"