oice, clear and strong.

"Pass the word to load the torpedo tube."

"Aye, aye, sir!"

Next, hailing the "Selma," Ennerling called:

"Last hail before trouble! Do you surrender?"

"No, you sea-lawyer!"

Just a word to Jack from the Naval officer, and the "Pollard" shot
ahead of the other craft, then came up and around, going after the
yacht on the quarter, nose on.

"I hope this line of business works," remarked Ennerling, with a dry
smile.

"Toot! toot! too-oo-oot!" sounded the yacht's steam whistle, shrilly.

At the same time her engines reversed. Another of the mutineers rushed
to the rail, waving a white towel.

"In heaven's name, don't do it!" he bellowed, hoarsely.

"You surrender, then?" demanded Ennerling, stiffly, though his heart
must have bounded with joy. "Wise men! We're not going to put a prize
crew aboard. You'll have to take the yacht in. Head about for the
coast, taking the course as we signal it. Don't try any tricks, or
any slowing down of speed. The least sign of treachery, and we'll sink
you without further warning--"

"--if we can do such a trick with compressed air alone," added
Commander Ennerling in a tone heard only by those near him on the
platform deck. "Captain Benson, what is the nearest place on this
coast with a police force capable of taking charge of such a crowd."

"Clyde City is about a thirty-two mile run from here, sir," Jack
answered. "There's a harbor police boat there."

"Then make for Clyde City, please. I'll attend to signaling the yacht."

As the two vessels proceeded on their way the ladies below were made
as comfortable as possible. Mr. Lawton and his steward were provided
with dry clothing, and coffee was served. It was an hour before either
Jack or Hal found time to change their clothing in the motor room.

CHAPTER XVII

JACK PERPETRATES A PRACTICAL SEA JOKE

"Searchlight ahead, sir."

Captain Jack made the report to Commander Ennerling.

It was in the small hours of the morning, and the submarine, having
taken its prize in to Clyde City's harbor, was now on its way up the
coast to tie up for the night at Dunhaven.

They were running about six miles off the coast. As the president of
the Naval board had a great desire to test the craft running all but
submerged, only the upper portion of the conning tower was above the
water.

At Clyde City the "Selma" had been put in charge of the squad of the
harbor police boat, and the