It was nearly noon when they reached the upper end of the pond, and they decided to land and eat dinner before starting down the river.

“We made one big mistake, Jack, when we started on this trip,” Bob said while they were eating.

“Only one?” Jack smiled.

“Well, I’ve only thought of one so far.”

“All right, spring it.”

“We should have left one of the pocket phones at home and brought the other with us.”

“What do you mean, phones?” Rex asked.

“Why, early in the summer we finished a couple of what we call pocket radio phones,” Bob explained. “We had been working on them for some time.”

“And let me tell you they came in mighty handy awhile ago.” Jack interrupted, and he told Rex and the Indian about their trip along the Canadian border in their search for liquor smugglers.

“And you didn’t bring them with you?” Rex asked.