Eastern city, for there were towers, domes and minarets, the most
wonderful sight he had ever gazed upon.

"A---a mirage!"

"Yes," said Dad. "We see them here some times, but not often. My
friends down there are showing you many things this night. Yes they
never do that unless they are pleased. The spirit of the Canyon is
well pleased. I was sure it would be."

By this time the others had arrived. All were uttering exclamations
of amazement, only Tad and Dad being silent and thoughtful. For
several minutes the reflection hung suspended in the sky, then a
filmy mist was drawn before it like a curtain.

"Show's over," announced Chunky. "That billion orchestra will now play
the overture backwards."

"Most remarkable thing I've ever seen," announced the Professor,
whereupon he entered into a long scientific discussion on mirages with
the gentlemen from the hotel.

Tad and the guide followed them slowly back to camp. The conversation
soon became general. Dad was drawn into it, but he spoke no more about
the things he and Butler had talked of out on the rim of the Canyon,
literally hanging between heaven and earth.

"Well, what about to-morrow, Mr. Nance?" questioned the Professor, after
the visitors had left them.