Barry knew there were Archie batteries to be passed over on the way back, and if he meant to keep a straight course it was necessary that he should be as far above them as possible. He leaned out and peered down at the landscape wheeling and unrolling under them, picked out the spot he was watching for--a village where he knew Archie batteries were located--and altered course slightly to give it a wider berth. In another minute the Archie shells began to bark about them. At the first one that came dangerously close the "Marah" hoicked abruptly upward 500 feet, wheeled sharp south for half a mile, swung again and drove straight west. Twice she had to swerve and dodge in similar fashion before she cleared the zone of the Archies' range, and these swerves and their faster downward passage allowed the enemy craft to overhaul her considerably. Spotty swung his machine-gun round in readiness and trained it aft and up on the hostiles. Two single-seaters were half a mile ahead of the other four and looming larger every minute. They were within long range now, and, presently, one of them loosed off a dozen rounds or so at the "Marah." Spotty jerked a signal that he was going to fire, and taking careful sight rapped off about twenty rounds. The range was too great yet for him, and the Huns made no sign of a swerve from their direct path, so Spotty ceased firing and waited, glancing over his sights at one machine that had forged slightly ahead of the other. Barry looked back over his shoulder and up at the two machines. They were still a good thousand feet above the "Marah," but Barry was satisfied enough with the way the game was running, because while they had dropped from perhaps 20,000 feet to 15,000, the "Marah" had gained 3,000 to 4,000 as she flew.