is Millard, himself."

Millard came in, a policeman at his side, for the submarine boys had
hailed the first policeman they met inside the city limits, and had
explained to him.

"This man is wanted as a United States prisoner, is he, sir?" inquired
the policeman.

"Yes, if his name is Millard," replied Lieutenant Ridder.

"Oh, this is Millard, all right," confirmed Jack Benson.

"Then shall I leave the fellow with you, sir?" inquired the policeman.

"Yes, of course; and thank you."

"You'll give me a receipt for the fellow, as a United States prisoner?"
hinted the policeman.

"As a United States suspect," corrected Lieutenant Ridder, going to a
table on which were writing materials. The policeman was handed the
desired document, then withdrew. Then Ridder went to a telephone,
calling up Major Woodruff.

"The major will be here in about ten minutes," announced Ridder, hanging
up the receiver. "In the meantime we will do no talking in the presence
of this suspect."

It was just a little less than ten minutes later when Major Woodruff,
accompanied by a corporal and two private soldiers, entered the room.

Millard was at once taken away, under guard.

Then the boys told their stories, quickly, comprehensively.

"I'll have to get a clear wire all the way through to Washington,"
declared Major Woodruff, promptly, going to the telephone. In a minute
more he had arranged matters, and hurried to the table to write his
despatch. Ere the major had finished writing a messenger boy was at
the door.

"Boy, you'll find my automobile at the hotel entrance," stated Major
Woodruff. "Give this card to my chauffeur, and he'll take you on the
jump to the telegraph office. Then come back in the automobile, and
wait for more work."

"Do you expect anyone in Washington to get that message now, after ten
o'clock at night?" Jack asked, wonderingly.

"To-night?" repeated Major Woodruff. "Yes, sir! You haven't much idea,
I take it, Mr. Benson, how fast government business travels. Within
five minutes the first part of my message will be ticking out on a
receiver in the War Department. The Army officer in charge will get
the Secretary of War over the telephone. Why, my answer will very
likely be here inside of twenty minutes!"

It was thirty minutes, exactly, when a messenger placed a telegram in
Major Woodruff's hands. As soon as the messenger had gone outside,
the major read this telegram.

_"Keep prisoner M