"Here, Senor Hazelton, we do not call eleven o'clock a late hour
for appearing."

Twenty minutes later Don Luis appeared, clad in white and indolently
puffing at a Mexican cigarette.

"You will smoke, gentlemen?" inquired their host, courteously, after
he had inquired concerning their rest.

"Thank you," Tom responded, pleasantly. "We have never used tobacco."

Don Luis rang and a servant appeared.

"Have one of my cars ordered," commanded Don Luis.

Ten minutes later a car rolled around to the entrance.

"You will come with us, Carlos?" inquired Don Luis.

"Assuredly, Don Luis," replied the secretary, in the tone of a man
who was saying that he would not for worlds miss an expected treat.

It was a seven-passenger car of late design. Into the tonneau
stepped the two Mexicans and the two young engineers.

"To the mines," ordered Don Luis.

"Do you wish speed, excellency?" inquired the chauffeur.

"No; we will go slowly. We may wish to talk."