Then, with the beam directed in the path the mysterious unknown must have taken, he tried to show the occupant of the amphibian what he meant.
Evidently the endeavor succeeded, for the amphibian dived, and took to the water, while Larry, directed by Jeff, swept around in a circle out of range if the amphibian rose unexpectedly, but within visual range of its maneuvers.
Watching intently, his comrades saw that the amphibian kept on toward shore in a taxiing course on the water surface.
A shout greeted the advent of an automobile on a shore drive. As it swung around a curve, close to the water, its bright headlights fell in a sweeping line across the water—and picked out a round, white dot bobbing, vividly lit, in the rays.
The amphibian was headed directly for it.
It went close, just as the swinging lights swerved and were gone.
“Drop another flare!” shouted Larry.
Sandy caught and relayed the suggestion as they retained their swinging curve.
With the glare from the dropped light picking out things in sharp silhouette, they saw a man clamber out onto a pontoon and rescue the floating prize.
“Now, I wonder if that is Mr. Everdail—or if it’s somebody else?” thought Larry, correcting for a tendency of the nose to fall away.