“Well, anyhow, they shine!” interrupted Ned, with a laugh, for sometimes the professor got on one of his long scientific explanations, and hardly knew when to stop, he grew so enthusiastic about it.

“Yes, they shine!” exclaimed Mr. Snodgrass. “My search has been successful.”

“And I hope ours will be,” remarked Jerry, as they went to rather a late supper.

They made an early start the next morning, heading the airship for the farther end of the valley, intending, on reaching it, to turn and come back, so that Mr. Brill could pick out the stone that resembled a church—the stone that served as a landmark for the hiding place of the gold. The going trip was quickly made, but, though they kept a lookout for the stone, no one saw it.

“I don’t believe we could pick it out going this way,” explained the prospector. “But it will show soon enough when we head back the other way, and get near it.”

As Mr. Brill was fairly sure that he had hidden the gold some distance from the lower end of the valley, little time was spent there, once they had begun the return trip.

It was about noon, and Bob was just thinking of getting dinner, when Mr. Brill, who was in the pilot house with Jerry, remarked:

“Go slow, now. I think it’s somewhere around here.”

The Comet’s speed was reduced, and a little later, as they swung over a pile of fantastically heaped-up rocks, the prospector cried: