After spending a short time at home, and not seeing his father, the good doctor, who was off in his car paying his morning calls, Frank again mounted his wheel, and headed toward the home of his cousin.

He had much to ponder over as he proceeded, making no pretense at speed; for he was carrying the gun in one hand. It was not a very pleasant thought, that at any minute almost he might run across that revengeful Jules, bent on paying back the debt he chose to believe he owed the young aviator. Frank was almost tempted to stop, alight, and place a couple of shells in the gun, so as to be ready for any emergency that might arise.

"Shucks! what's getting you, Frank Bird?" he exclaimed, as he laughed at the idea of being held up in that fashion on the public highway. "Just make up your mind nothing's going to happen to you; and that if Jules did come back to the Powell woods he's started away by now, full tilt. I'm ashamed of you, that's what. If it was Andy now, he's so full of imagination he sees lots of things that never exist; but you know better. Why, whatever can that smoke mean? And as sure as anything, it seems to be rising straight over the field where our shop lies!"

He immediately increased his speed, and went flying along the crooked road, bent on reaching a point where he could see the open, and ascertain if his worst fears were going to be realized.

CHAPTER XI

A NEW ALARM

The next two minutes seemed an eternity to Frank, spinning rapidly along on his trusty wheel as he was. He wanted to know the worst, and yet dreaded to pass beyond the trees where the field would be in full sight; because it would be distressing if he discovered the shop and hangars blazing, and everything gone.

Still, Frank was not the one to shirk bad tidings. And consequently he increased his speed all that was possible.

"Bully!"

Such was the exclamation that involuntarily burst from his dry lips when, having burst from behind the barrier, he had a clear view of the field. For the shed was there as intact as ever, and also the two hangars sheltering the aeroplanes. Some distance back, far enough removed to avoid any danger to the gasoline in the storage houses, Andy was tending a bonfire; while the other boys seemed to be carrying shavings and trash thither in bags and baskets.