"Who knows?" It was Sssuri who raised that objection. "With their ancient knowledge once more theirs, even the depths of the sea may not be ours much longer. Do they not know how to ride upon the air?"

The knot of mer-warriors stirred. Several spears thudded butt down into the sand. And Sssuri accepted that as an invitation to descend, summoning Dalgard after him with a beckoning finger.

Later they sat in a circle in the cushioning gray powder, the two from the south eating dried fish and sea kelp, while Sssuri related, between mouthfuls, their recent adventures.

"Three times have they flown across these islands on their way to that city," the Elder of the pitifully decimated merman tribe told the explorers.

"But this time," broke in one of his companions, "they had with them a new ship—"

"A new ship?" Sssuri pounced upon that scrap of information.

"Yes. The ships of the air in which they travel are fashioned so"—with his knife point he drew a circle in the sand—"but this one was smaller and more in the likeness of a spear with a heavy point—thus"—he made a second sketch beside the first, and Dalgard and Sssuri leaned over to study it.

"That is unlike any of their ships that I have heard of," Sssuri agreed. "Even in the old tales of the Days Before the Burning there is nothing spoken of like that."

"It is true. Therefore we wait now for the coming of our scouts, who were set in hiding upon their sea rock of resting, that they may tell us more concerning this new ship. They should be here within this time of sleeping. Now, go you to rest, which you plainly have need of, and we shall call you when they come."

Dalgard was willing enough to stretch out in the sand in the shadows of the far end of the cave. Beyond him three cubs slumbered together, their arms about each other, and a feeling of peace was there such as he had not known since he left the stronghold of Homeport.