“Whew! that sounds interesting like,” commented Billie; “and do you think we’ll strike it as bad as that?”

“Nobody can say,” continued Donald; “but let’s hope by all means that we get across without any experience of the kind. Perhaps you think it sounds interesting, but take my word for it, Billie, if it comes, you’ll sure believe you’re having the worst time of your whole life.”

After that Billie did not seem quite so anxious to know what a sand storm was like. He realized that when his chums took a thing so seriously there must be something about it that was menacing.

Donald was right when he said that they had camped not a great ways from where the mountains came to an end, and the glistening desert lay beyond; for two hours after leaving the spring they found themselves on the border of the wide sandy stretch.

Billie looked out over that sizzling desert, and began to realize the meaning of what Donald and Adrian had said when they told him about its terrors. But there was no other trail by means of which they could reach the Zuni village; and unless they wished to give that project up for good and all, they must proceed, come what would.

As Billie was the one who wanted to look upon

the strange sights connected with the quaint homes of the cliff dwellers, he held his peace; though truth to tell the prospect of a ride of hours across that desert did not appeal very much to him now, after he had heard such dismal stories about what it could do when it took a notion.

The sunshine was very vivid, and half blinded them when they tried to look far away to where Donald said the other elevation undoubtedly lay, amidst which the Zuni village was to be found. From another quarter it could be reached without any necessity for crossing the desert, but not from the south.

“Kind of like buying a pig in the poke, ain’t it, this thing of starting out there without seeing where you’re heading for?” remarked Billie, a little uneasily; for now that he was gazing on the sandy waste, its tremendous possibilities began to really awe him; and then the way the sun was shining on the billows of sand made him feel as though they must come near being roasted before they had gone a great ways.

“Oh! we know that we’ve got to keep heading straight into the northwest; and what’s the use of having compasses with us if we can’t keep our course?” said Donald, who did not appear to be worried at the prospect.