began pacing up and down the deck.
The submarine drew close alongside the schooner easily keeping pace with
the sailing vessel at the rate they were progressing.

"Von Kluck is certainly worked up about it," remarked Harry as he noted
the captain's distracted manner. "He's almost bughouse!"

"Well, so would you be, too, if all you had were about to be sent to the
bottom of the ocean!" declared Ned. "It's tough luck!"

"Maybe we'd better be getting our kits in shape," suggested Jack moving
toward the cabin. "I don't want to leave everything!"

"I had to leave everything," put in Frank, "when they sunk the ship I was
on. I felt lucky to get away with my life!"

"Let's make a try for it, anyway," continued Jack.

"Wait a minute!" cried Ned, "let's see what they're going to do. The man
is going below again! Why don't he hail us?"

Strangely enough the officer was descending the hatchway without speaking
a word to those on board the schooner.

This procedure puzzled von Kluck, but did not serve to reduce in any
degree the excitement under which he was laboring.

"Lay aft a couble of handts und make reaty der boats!" he shouted. "Come
on, hurry oop! Lifely, now, men!"

In obedience to this command two members of the crew sprang towards the
stern of the schooner to make preparations for launching the boat lashed
at the stern. Two others frantically loosened the lashings of the
upturned boat lying amidships.

A clanking sound indicating that the hatchway of the "U-13" had been
closed attracted the attention of the boys in that direction.

"What are they going to do now?" questioned Jimmie eagerly.

"I fancy they are going to pull away a little so as to launch a torpedo
at us," stated Ned. "It don't look as if they're going to be kind enough
to let us get off the vessel before they blow it up!"

"Then it isn't the same crew I met!" declared Frank firmly. "They treated
the men fine! While I must admit that I don't admire their way of sinking
merchant ships, I will have to say that they gave the people a chance to
get out of danger!"

"Well, is it the same submarine you saw?" asked Ned.

"It looks exactly like it. Besides," the boy continued, "I see the
figures 'U-13' painted on the side of this one, too. I believe it is the
very same vessel. Maybe they won't sink us!"

With hatch closed the submarine was preparing to execute some maneuver.
Gathering speed the craft plunged ahead quickly leaving the schooner
a