quiet. Received another letter, to which I have paid no
attention. Feel almost sure the rascals have left this part
of the country. All fairly well."

"Well, that's some comfort," was Tom's comment. "I hope they have gone
away, and that we never see or hear of them again."

"Don't comfort yourself that way, Tom," answered Dick. "They are bound
to show their hand again, sooner or later. We won't be safe from them
until they are in jail."

CHAPTER XX

GRACE'S REVELATION

One clear afternoon the three Rover boys decided to take a run up to
Hope Seminary in the _Dartaway_. There was very little wind and,
although it was growing colder, they knew they could easily bundle up in
their aviation coats and boots. Sam and Tom had been trying out the
biplane, and they pronounced everything in perfect order for a flight.

"Dick, let me run the machine over," said Sam, and the big brother
agreed, for Tom had been at the wheel on a previous occasion.

The boys had no classes to attend after lunch and so got away by two
o'clock.

"I trust we can see the girls," said Dick, as they started up the engine
of the flying machine.

"Oh, they'll be at liberty after hours," answered Tom. "They always
are."

Previous to leaving, the boys had filled the oil feed and the gasoline
tank, so they were prepared for quite a trip.

"Maybe we can get the girls to go up, for just a little sail, you know,"
said Sam. "I am sure the _Dartaway_ could carry them, on a pinch."

"Where would they sit, in our laps?" asked Tom, with a grin.

"No, they could sit in the seats and we could sit back of them, like on
a bob-sled," answered the youngest Rover.

"I don't think they'll care to go up," answered Dick. "They'd be too
scared. As yet, flying machines are hardly built for ladies. But I think
the time will come when they will use them."

As they were in no hurry, the boys took their time in sailing over the
farms and country roads. They did not go up very high, and often saw
farmers and others staring at them, shouting things they could not
catch.

"By and by flying machines will be as common as autos," remarked Dick.
"But now the sight of one is a great curiosity to these folks."

Sam handled the machine like a veteran and even showed what he could do
by making a small figure eight and a spiral dip.

"I wish we had a little monoplane, just for one," he said. "My! couldn't
a fellow scoot around then!"

"Sam's got the fl