foot and hide. The motorboat must come in behind the
spy boat and cut off retreat. Be sure you are armed."

CHAPTER XXI

THE CAPTURE OF THE SPIES

Without a moment's delay the party that was to go by boat, including
Henry and Roy, rushed off to the dock where the secret service had a
motor craft of the racing type, capable of making tremendous speed.
Almost as quickly the other party found itself seated in a powerful
touring-car, speeding northward. Captain Hardy, Willie, and Lew were
in the car, together with the two agents and the driver, who was
likewise a secret service man.

Up Third Avenue rolled the big automobile, dodging wagons, shooting
past motor-cars, darting by trolleys, its horn shrieking an almost
unceasing warning as it charged onward at the very top of the speed
limit. Never had Willie or Lew ridden so fast in crowded
thoroughfares, and time and again they held their breath as the big car
rushed toward some obstacle in its path, expecting a crash. But under
the skilled hands of the driver the great machine swept in and out,
weaving its way through the traffic as an eel glides through water
growths.

The first thrill passed, they turned to their captain and the secret
service agents who were earnestly discussing the situation. Overhead
the thunder of the elevated trains was such that at times they could
hardly hear what the men beside them were saying.

"I am well acquainted with New Rochelle and the region of Echo Bay,"
said one of the agents, "but I never heard of any Revere Rendezvous
there. However, the people of the town can doubtless tell us. We
shall have time to make inquiries." And turning to the driver, he
said, "Shove her to the limit, Jim."

Already the car was well up-town. Traffic had grown steadily less, and
as steadily the driver increased his speed. Now they were rolling over
the smooth asphalt at twenty miles an hour.

"No doubt they could tell us," replied Captain Hardy, "if there were
any such place. But I fear that the name is one of the spies' own
making," and he told the story of the Balaklavan rendezvous. "We think
that meant Hell Gate," explained Captain Hardy. "The fact that the
spies' motor-boat is now evidently on the Sound confirms that belief.
But the name was far-fetched. It took us a long time to work it out.
This new name may be equally obscure. We shall have to decipher it on
the way."

The motor-car was approaching the Harlem River. "Y