Croft nodded. "Then let the matter remain between ourselves. Koryphu of Cathur, so soon as you are refreshed, we go to Zitra, to hold speech with Jadgor in person concerning these things."

"Let not Koryphu delay you," Koryphu said quickly. "Refreshment were not needful in a pressing matter or one involving the safety of Jason's wife and son."

His response gave Croft satisfaction, and he took him at his word.

"Accept Jason's gratitude then instead," he made answer. "So quickly as the galley shall fill her tanks with fuel for the motur, we shall go aboard."

Already he had arranged with Robur to urge the work in Himyra during his absence, taking up all foreseen details with him and assuring him that he could answer questions by the wireless almost as quickly as though present in the flesh, and even before her arrival he had seen to it that the captain of the quays had orders to see the galley refueled.

Consequently, Koryphu having waived all formality in the matter, afternoon found them dropping down the Na, and evening brought the mouth of the mighty river, where its yellow waters tinted the clearer flood of the Central Seas for miles. The galley pointed her trim prow into the north and east at her maximum of speed.

Haste, haste, haste. The thing gnawed now at Jason Croft's heart. It urged him, spurred him, fired his every thought and action. And as he stretched himself on his couch that night with the signet of Naia of Aphur a purple talisman on a silver chain about his neck, it was with the determination to complete his task quickly in Zitra, and return in haste to Himyra, there to once more speed his work.

Zitra rose white before them the morning of the fourth day, ringed by its shimmering walls, fairylike as a mirage on first appearance. Tamarizia's flag was broken out above the galley and it darted into the inner harbor through the massive silver-faced sea-doors.

Jadgor and Zitra waited. Days before, Robur had warned his father of Croft's coming, by wireless, and the word had gone out that the Mouthpiece of Zitu was returning briefly to the city for the first time since the loss of his wife and child.

Now as he stood on the after-deck, brave in his metal harness, with the wings of Azil—the Cross Ansata blazing blue upon it—the azure plumes nodding above his helmet, Koryphu beside him, and the galley swung toward her mooring, a wonderful picture was spread before his eyes.