"But he may shoot into the air, just to scare the intruder and raise an alarm." The next day was such a busy one for the Rover boys that they had no time to do more than look at the biplane and see that it was safe.

Abner Filbury reported that he had slept in a hammock slung beside the machine and that nothing had happened to arouse him.

Nobody but the Rovers knew that he was on guard.

The boys wanted to tell Bob Grimes, but that individual kept out of the way.
After having settled down in their rooms and to their studies, the three Rover boys made several flights in the biplane, including one to the Sanderson farm, where they discovered Songbird calling on Minnie.

Both were seated in a hammock between the house and the barn, and both leaped up in confusion when the biplane, manipulated by Tom, sailed directly over their heads.