"There," announced Tom, when they were on the way once more, "I think we've given them something to think over at any rate. Now for a few more miles, and then we'll rest until morning."

All were glad enough when Tom decided to go into camp, and they slept later than usual the next morning. The trail was now of such a character that no one following them could be detected until quite close, so it was useless to worry over what the Fogers might do.

"We'll just make the best time we can, and trust to luck," Tom said.

They traveled on for two days more, and saw nothing of the Fogers. Sometimes they would pass through Mexican villages where they would stop to eat, and Tom would make inquiries about the ancient city of Poltec and the plain of the ruined temple. In every case the Mexicans shook their heads. They had never heard of it. Long before this Tom had ascertained that neither Delazes nor any of his men knew the location of this plain nor had they ever heard of it.

"If there is such a place it must be far in--very far in," the contractor had said. "You will never find it."

"Oh, yes, I will," declared Tom.

But when a week passed, and he was no nearer it than at first even Tom began to get a little doubtful. They made inquiries at every place they stopped, of villagers, of town authorities, and even in some cases of the priests who obligingly went over their ancient church records for them. But there was no trace of the temple plain, and of course none of the city of gold.

Peasants, journeying along the road, parties of travelers, and often little bodies of soldiers were asked about the ruined temple, but always the answer was the same. They had never heard of it, nor of the head-hunters either.

"Well, I'm glad of the last," said Mr. Damon, looking apprehensively around, while Eradicate felt of his head to see if it was still fast on his shoulders.

It was a weary search, and when two weeks had passed even Tom had to admit that it was not as easy as it had seemed at first. As for the Mexicans, they kept on, spurred by the offer of good wages. Delazes watched Tom narrowly, for a sign or hint of what the party was really after, but the young inventor and his friends guarded their secret well.