You may be making a mistake, but it will be a mistake on the right side."
"I'll remember that. But I feel as if I had more than ever to learn. Can't I get some book and study it?"
"I've got such a work in my valise. I'll get it for you," concluded Caleb Walton, and he arose. "But remember about that other thing—mum is the word."
"I certainly shall remember," and Walter smiled. "I'm awfully glad I've found such a friend as you," and he squeezed the old gunner's hand.
They returned to the other car, and soon Walter was deeply interested in the volume which Caleb Walton loaned him. It was a technical work, issued by the authority of the Navy Department, and contained all that he desired to learn, and a deal besides.
"Going to learn your duty as soon as possible, eh?" observed Si Doring, as he looked over the boy's shoulder. "That's right. If you want to know anything about sails or knots, call on me."
"What's the matter with calling on me?" put in the voice of Jim Haskett, as he slid into the
