Presently a sharp call in Jack’s voice caused his father to look up, while big Bob who had been almost asleep rolled over and propped himself on an elbow. Jack stood in the doorway of the tent, beckoning.

“Dad, Bob, come here. The radio.”

CHAPTER XX
A CALL FOR HELP

Disappearing within the tent after his excited exclamations, Jack left two bewildered individuals staring at each other beside the camp fire.

“What in the world can he mean?” wondered Bob, getting to his feet.

“He has heard something over the radio,” surmised Mr. Hampton. “From the way he dashed into the tent, in fact, I’d say he’s still listening in. Come on, let’s investigate.”

Hastening across the intervening space, they pushed aside the tent flap, finding the interior lighted by lantern, and discovered Frank seated at the radio with the headpiece clamped to his ears and Jack bending above him.

As they entered they heard Frank speaking into the transmitter say:

“Here he is, Mr. Ransome. Just a minute.” Pulling the headpiece from his ears, Frank proffered it to Mr. Hampton, while getting to his feet.

“What’s going on? Who have you?” questioned Mr. Hampton, still bewildered. But at the same time he accepted the proffered instrument, while Jack thrust him into the camp chair vacated by Frank.