hiding-place, after they had committed some crime, and expected a warm
pursuit. Ordinary methods would never find them, save through a mere
chance; but when one can copy the eagle, and mount to dizzy heights,
with a pair of powerful glasses he can see almost everything that is
going on for miles and miles around, provided he has a skilled companion
along to manage the aeroplane or balloon.

And that is destined to be the greatest value of these winged messengers
in future years, since it has been proven that they are not so very
dangerous after all in the line of dropping explosives upon battleships
or fortified places.

"Somewhere up yonder, Frank, they are probably hiding, and feeling
perfectly safe from pursuit," ventured Andy, who was sweeping the marine
glasses around and examining the country ahead with more than common
interest.

"Look how Old Thunder-top stands out today!" remarked Frank, turning for
just an instant to glance upward toward the left, where the high
mountain towered, its heavily wooded sides looking as gloomy as ever,
and the white cliffs that made the summit inaccessible to human feet,
appearing almost dazzling in the glittering light of the undimmed
morning sun.

"And say, there's our old friends, the eagles that had a nest up there,
and gave me such a warm time when we first reached the top." Andy cried,
as he focused his glasses on a sweeping pair of huge birds that were
heading their way, as if meaning to investigate, and find out what
manner of rival this could be, invading their native element.