“Now then—ready?”

“Yes,” cried Dean, firmly now, as soon as he had made his desperate plunge into danger.

“Fire!”

Bang! Bang!

“Again!” cried Mark, and directly after there was the repetition of the reports and the rustling sound of replacing the empty cartridges.

“Hi, there!” came in a voice from out of the darkness, sounding distant. “Is that you boys?”

“Yes, doctor,” cried Mark. “Where’s father?”

“Here, my boy. Where’s your cousin?”

“I’m here, uncle.”

“Good. But you two fellows ought to have stopped in the waggon.”