"And it will last for how long a time?"

"I know not," said Croft. "It shall endure until I am possessed of the next means for making Aphur strong. Do you remember your promise to guard my body well?"

"It shall be well guarded, my strange friend," Robur promised again.

Yet that night a sudden panic seized upon Croft. What, he asked himself, if some unknown peril should threaten Naia while he was studying munition-making on earth? He considered that for a time, before he saw a way around. And then he sought out Gaya, and finding her alone as luck would have it, explained to her as he had explained to Robur before the nature of his coming sleep.

She heard him wide-eyed, and before she could break forth in comment Croft went on. "But Gaya, wife of my friend, should any peril or danger threaten Naia, daughter of Lakkon, the cousin of your lord, and I be still asleep—come quickly to me and bend to whisper, 'Naia needs you' and I promise I shall awake."

Gaya gave him a wide-eyed, startled glance. "Her name will rouse you from this sleep of deathlike seeming?" she exclaimed.

"Aye," Croft smiled. Gaya's expression had told him in a flash that she understood. "Wife of my friend, I think her name might wake me from death itself."

"Jasor!" Gaya cried. "My lord—can this thing be?"

"That my heart lies at her pink-nailed feet?" Croft retorted. "Aye."

"Yet is she pledged to Cathur." Gaya grew swiftly pale. "Jasor, my good lord—and you love her, speak not concerning it to any other save myself. I swear by Zitu to keep your words in my heart. Do you control your tongue."