It was no use to wonder, so Jimmie and Jackson sprang toward the machine, grasped Ned by the hand, and swung into seats.  The Indian who had piloted the Nelson to the place and prevented an attack by the guards, stood with his arms folded across his broad breast.  For a moment Ned grasped his hand.  The others followed, with what emotion may well be understood, and the Nelson was away, purring through the sweet air of the morning as if there were no perils at all in life!