Mendoza almost dropped his cigarette.

"What?"

"I don't wonder that you stare, but it is true. I have sworn off."

"Pardon me for smiling!" exclaimed the young Mexican, lifting his slender hand to his mouth. "I fear it is not good breeding, but I can't help it."

Young Hatch flushed.

"That's all right, Carlos!" he exclaimed. "I have a right to knock off any of my bad habits if I wish to, I suppose."

"Oh, why do you call them bad habits? I see no sense in that, Arthur. Every one smokes and drinks, you know. Down in my country——"

"Not every one," interrupted Arthur. "Merriwell does not."

Mendoza shrugged his shoulders like a Frenchman.

"Then he doesn't know what he's missing. Oh, stop if you wish, Arthur; you'll be at it again within a week."