“There should be a notice warning people of the danger.”

“The senor is right!”

Castrello had now reined his horse up quite near to the wagon.

Frank who was a keen student of human nature was doing his best to size the fellow up.

As far as he could see, he was a gay type of the Mexican sport, fond of cards and wine and women.

He did not seem to be a rascal or a cut-throat in any sense of the term.

But what was he doing in this part of the country?

A sudden thought came to Frank.

He might be, like others, a customer of Mason’s, and have come here for a supply of counterfeit money with which to return to Mexico and defraud his countrymen.

The more Frank weighed this matter, the better satisfied he was of the truth.