"I saw your name on the register," he proceeded, "and it was not difficult to guess your mission," and he flashed a smile on the party, his white teeth showing brilliantly beneath his small, black moustache.

"I make it my business to outfit traveling parties, either for business, pleasure or scientific matters. I am, at your service, Val Jacinto," and he introduced himself with another low bow.

For a moment Tom and his friends hardly knew how to accept this offer. It might be, as the man had said, that he was a professional tour conductor, like those who have charge of Egyptian donkey-boys and guides. Or might he not be a spy?

This occurred to Tom no less than to Professor Bumper. They looked at one another while Val Jacinto bowed again and murmured:

"At your service!"

"Can you provide means for taking us to the Copan valley?" asked the professor. "You are right in one respect. I am a scientist and I purpose doing some exploring near Copan. Can you get us there?"

"Most expensively—I mean, most expeditionlessly," said Val Jacinto eagerly. "Pardon my unhappy English. I forget at times. The charges will be most moderate. I can send you by boat as far as the river travel is good, and then have mules and ox-carts in waiting."

"How far is it?" asked Tom.

"A hundred miles as the vulture flies, Senor, but much farther by river and road. We shall be a week going."

"A hundred miles in a week!" groaned Ned. "Say, Tom, if you had your aeroplane we'd be there in an hour."