Not until that moment had uncle Phaeton dared indulge in even the shadow of a hope. The awful alarm seemed proof conclusive that poor Bruno had been taken, through the treachery of Ixtli.

Naturally enough, that was his first belief, but now, as the air-ship slackened pace to circle more deliberately above the valley, all eyes on the eager watch for either Bruno or something to hint at his fate, Professor Featherwit lost a portion of that conviction.

If Bruno had indeed fallen victim to misplaced confidence, and had been craftily lured into this den of ravening wild beasts, why all this confusion and mad skurry? Why had not the traitor first made sure of his victim? Why such a general alarm?

Although such haste in getting afloat had been made, some little time had been thus consumed, and, before the aerostat was fairly above the Lost City, Bruno and Ixtli had dropped by stages down the shadowed side of the Temple of the Sun God, to burrow underneath the ground as their surest method of eluding pursuit.

Only for that, the end might have been different, for, once sighted, Gillespie would have been rescued by his friends, or those friends would surely have shared death with him.

And so it came to pass that, circle though they might, calling ears to supplement their eyes, swooping perilously low down in their fierce eagerness to sight their imperilled one, never a glimpse of the young man could they obtain, nor even a definite hint as to where next to look for him.

“Surely they cannot have captured Bruno, as yet?” huskily muttered uncle Phaeton, hungrily straining his eyes without reward. “If the poor boy had actually fallen into such evil hands, why such crazy confusion? Why—oh, why did I permit his coaxings to overpower my better judgment? Why did I send him into—”

The words stuck in his throat and refused to issue. Phaeton Featherwit just then felt himself little less than a cold-blooded assassin.

Mr. Edgecombe was but little less deeply stirred, although his feelings were more of a mixture. He grieved for Bruno, and would willingly risk his life in hopes of doing the young man a service, yet his gaze was drawn far more frequently towards yonder temple, on the top of which he had—surely he HAD caught sight of his wife, his daughter!

“Let me down and try to find him,” he eagerly begged, as one might plead for a great boon. “I promise to save him if yet alive, and—let me try, professor; I beg of you, give me this chance to show my heartfelt gratitude.”