Jack put a temporary end to the bombardment. But now they were once more spinning toward the enemy.
Around them a wild scene was being enacted, with the other quartette of planes swooping down on each other.
Apparently all this work had so far been without result; but Jack could plainly see that the Huns were quite satisfied with what little they may have accomplished in the battle, and were anxious to pull out.
As if a concerted signal had been given, the three Gothas were soon in retreat. No doubt the sight drew many a hoarse, derisive yell from watching Americans below, who could not understand the feeling of extreme caution that would tempt an air pilot to turn tail and run for home when opposed on equal terms.
They made excellent speed, too, and after chasing them for a short distance the Americans turned back. There was work much more important awaiting their attention just then than following the fleeing Boche fliers to some spot, where possibly a swarm of their mates would be turned loose to cut off escape and bring the daring Americans down.
One of the two friendly machines that had so opportunely come to the relief of Jack and Morgan now approached. To the delight of Jack he
