“Oh, you can make it, all right, but you’ll have troubles. In the first place, Mexico ain’t the United States, an’ there’s a queer lot of people, mostly bad, down there. You’ll have to be on the watch all the while, but if you’re careful I guess you’ll git along. But come on, now, help git breakfust.”

Through the meal, though the boys talked little, it was evident they were thinking of nothing but the trip to Mexico.

“I’m going to write home now and find if I can go,” said Ned.

Jerry and Bob said they would do the same, and soon three letters were ready to be sent.

After their usual round of duties at the mine, which consisted in making out reports, dealing out supplies, and checking up the loads of ore, the boys went to town in the auto to mail their letters. It was a pleasant day for the trip, and they made good time.

“It will be just fine if we can go,” said Bob. “Think of it, we may find the buried city and discover the stores of gold hidden by the inhabitants.”

“I guess all the gold the Mexicans ever had was gobbled up by the Spaniards,” put in Jerry.

“But we may find a store of curios, relics and other things worth more than gold,” added Ned. “If we take the professor with us that’s what he would care about more than money. I do hope we can go.”

“It’s going to be harder to find than the lost gold mine was,” said Jerry. “That map the professor has isn’t much to go by.”

“Oh, it will be fun hunting for the place,” went on Bob. “We may find the city before we know it.”