“He's white, even if he is red!” confidentially declared Waldo, at his first opportunity. “More danger of our spoiling him than his doing us dirt; and that's an honest fact for a quarter, old man!”

Bruno felt pretty much the same, yet his added years gave him greater discretion, and, in spite of that growing liking, he kept a fairly keen watch and ward over the Aztec.

After supper there came further questioning and answers, Waldo as a rule playing inquisitor, eager to learn more anent the strange existence which these people must live, so completely hemmed in from all the rest of the world as they surely were in yonder valley.

Without at all betraying the exile, Gillespie spoke of the lake and its mighty whirlpool, then learned that the Indians really made semi-annual trips thither for the purpose of laying in a supply of dried fish for the winter's consumption.

As the night waned, preparations were made for sleeping, although it was agreed between the brothers that one or the other should stand guard in regular order.

“Not that I really believe the fellow would play us dirt, even with every chance laid open,” Waldo admitted. “Still, it's what uncle Phaeton would advise, and we can't well do less than follow his will, Bruno.”

“Since we broke it so completely by tackling the grizzly,” with a brief laugh.

“That's all right, too. Of course we'd ought to've skulked away like a couple of egg-sucking curs, but we didn't, and I'm mightily glad of it, too. For Ixtli—what a name that is to go to bed with every night, though!—for Ixtli is just about as white as they make 'em, nowadays; you hear me blow my bazoo?”

And so the long night wore its length along, the brothers taking turns at keeping watch and ward, but the Aztec slumbering peacefully through all, looking the least dangerous of all possible captives. And after this light even the cautious Bruno began to regard him ere the first stroke of coming dawn could be seen above the eastern hills.

Not being positive just where the air-ship would put in an appearance, since Professor Featherwit had, perforce, left that question open, to be decided by circumstances over which he might have no control, each guard in turn devoted considerable attention to the upper regions, hoping to glimpse the aerostat, and holding matches in readiness to raise a flare by way of alighting signal. But it was not until the early dawn that Bruno caught sight of the air-ship, just skimming the tree-tops, the better to escape observation by any Indian lookout.