am certain. Millard, if he has been at work long, has compiled other
notes in other written volumes. If so, then he has also made other
charts of our coast defenses. For what other government has he thus
marked a series of charts with our secrets? And has Millard succeeded
in getting other charts, and other books of notes, off to the foreign
government he is serving--or has he them hidden somewhere in this
country, awaiting his chance to take the results of his spying out of
the United States?"

"I wish I knew!" muttered Jack.

"I'm coming to the point," continued Major Woodruff, briskly. "Now, of
course, when we discover evidence that spies of other governments are at
work along our lines of national defenses, the first thing we try to do
is to catch these foreign agents and all the material they have
succeeded in getting together."

Major Woodruff, who was becoming considerably excited, paused to light
a cigar, ere he continued, more slowly:

"Now, you and your two friends, Benson, know this fellow Millard. You
will spot him instantly, wherever you go. I shall communicate with
Washington, at once, by means of a telegram in cipher. The War
Department will order me to use all speed in catching Millard, and in
finding out where he keeps his other stolen records. Men and money will
be used in running down this fellow. Yet you and your two chums should
be in the front ranks of pursuit, for you will know him the instant you
lay eyes on him."

"You want me to take my friends ashore, then, Major, and lay the