er. The Navy Yard lay in full view. But
the scene that at other times Henry would have found entrancing, now he
scarcely noticed. He had eyes for one thing only--the rolling
motor-car ahead of him and the red eye that now glowed at its rear.

He turned on his light and at a safe distance followed the roadster,
which was heading due east. They passed the business portions of
Brooklyn. They left Prospect Park behind them. They traversed a
region of apartment-houses. Then came less thickly settled districts,
with block after block of private residences, each in its own little
yard. And so they proceeded to the very outskirts of the city, where
houses gave place to vacant lots and vacant lots were succeeded by open
fields. Darkness had come. Traffic had grown less and less. Now
there were no sheltering vehicles between himself and the roadster. A
great fear of discovery sprang up in Henry's heart. He switched off
his light, risking arrest, and rode on in the darkness. Occasionally
he passed under a lone street lamp. And now he understood why his
machine was enameled black instead of being nickel finished. It gave
back no answering gleam when beams of light fell upon it. It was made
for just the secret sort of work it was doing now. For, with his motor
completely muffled, his lamp extinguished, Henry was now riding through
the night like a dark shadow.

Long before this, Henry had slipped the proper map from its case and
had followed his route as far as he was able to see. Though his eyes
could no longer pierce the darkness, Henry knew that he was passing
through a lonely, undeveloped section of land. Dimly he glimpsed tiny
bits of woodland here and there. The lonely lights Henry occasionally
saw were the lamps in isolated farmhouses. He could no longer tell
exactly where he was, though he knew the road he was following. But he
had watched his speedometer closely and he knew he was traveling about
twenty miles an hour. He was keeping pace with the motor-car, but
riding several hundred yards behind it. So they continued for a long
time.

Suddenly the motor-car swung round a curve and vanished from sight.
Henry knew the car had rounded a curve because he saw the lights swing.
A minute later as he was about to reach the curve himself, he heard the
rapid beating of hoofs and a team of horses came tearing round the bend
and charged straight at him. Evidently the driver had lost control of
them and it