o do is--"

Pauline could not catch the final words.

The two moved back to the ballroom. She followed close behind, a
little suspicious, but with the thrill of a new plan gripping her.

She saw Ensign Summers step forward early to greet Mile. de Longeon.
Another dance was beginning.

"This one is Mr. Owen's," said Mile. de Longeon, as she moved away on
the arm of the secretary.

"Have you anything to tell me?" he asked.

"Yes. Induce her to make Summers take her down in his submarine
tomorrow, and she will never trouble you again."

As the dance ended, Pauline and Harry, Summers and Lucille, joined
them.

"Mr. Summers, I have a great request to make," declared Pauline.

"I grant it before you breathe a word," he answered.

"I want you to take me along on your submarine trip tomorrow."

"Polly, have you gone crazy all over again?" cried Harry.

"I don't believe it would be--" began Summers.

"It must be," she commanded.

"Well, I promised too soon, but I'll keep my word."

Owen and Mile. de Longeon had stepped aside.

"What does it mean?" gasped the secretary. "She is doing the very
thing we want her to do."

"Sometimes Fate aids the worthy," said Mile. de Longeon softly.

CHAPTER XXII

SUBMARINE B-2

At the dock of the navy yard a submarine lay ready for departure.

There was nothing about its appearance to indicate that its mission was
of more than ordinary importance. But it was an unusual thing to see a
woman aboard, and the curiosity of the crew was matched by that of the
young officers who had come down to see Summers off on his voyage of
many chances.

The officers got little reward for their considerate interest. Ensign
Summers was engaged. He was explaining to Pauline, as they stood on
the deck of the war-craft, the entire history of submarines from the
time of Caesar, or Washington, or somebody to the present day, and
Pauline was listening with that childlike simplicity which women use
for the purpose of making men look foolish.

"By Jove! I thought he was tied, heart and hope, to the lovely
foreigner," exclaimed one of the shoreward observers.

"So he is," said another. "But Mlle. de Longeon isn't interested in
his daily toil. Do you know who the young lady up there is?"

"No. She must have got a dispensation from the secretary himself to go
on this trip."

"So she did--easy as snapping your thumb. She's Miss Pauline Marvin,
daughter of the richest man tha