"In that case it would be best to keep straight ahead and trust to our speed to carry us away from them," suggested Harry.

"Yes," agreed Jack, "stern chases are always long chases."

"Do you suppose we can give them the slip somehow without using up all our gasoline?" asked Jack. "I don't want to get too far away from Jimmie and Dave, either. Can't we work it somehow?"

"If it were only a little lighter," ventured Harry, "we might land somewhere and argue it out with them from behind a stone wall or trench."

"That wouldn't be very profitable," Ned argued. "If we should start anything like that we'd be in all kinds of trouble at once. Our best plan would, I think, be to cut and run for it to the westward. If they're after us and mean to catch us, they would try to follow. Even though this may be an army plane they are using, I believe the Eagle is capable of outrunning them."

"Then here goes for a fast ride," declared Jack, reaching for the handle controlling the mixing valve of the carburetor. "I'm going to slip in a little more air and shove the spark ahead a few notches."

"Hang onto your hat," laughed Harry. "If Jack gets the speed bug nicely working there won't be much left that isn't tied on!"

"Right you are," responded Jack as the Eagle seemed to fairly leap forward in answer to his touch. "Hang on tight!"

Jack's caution was needed, for the speed materially increased. Ned continued to keep watch with the aid of the binoculars, while Harry scanned the surrounding country in an effort to make out any features that would guide them.

Presently the others were delighted to hear a cry from Ned.