lone. Scarcely had the bow of the sailing vessel been passed ere the
submarine was so far beneath the water as to show only the periscope. In
a moment there was but a swirl to indicate where that had been. Presently
it, too, disappeared. The "U-13" was gone.

For some time the boys stood at the rail eagerly scanning the water to
discover evidence of the submarine's return. Their search was fruitless.
Nothing was found to indicate the presence of their late visitor. The
waves rose and fell without hint of its location.

"Oh, Captain von Kluck!" Ned called. "They have gone!"

"Vhat?" asked the captain in a tone expressing doubt.

"Yes," continued the boy. "They have slipped back into the ocean again
and have left us. Possibly they think we're too small for them to waste a
torpedo on. Torpedoes cost a lot of money, you know!"

"Vhell, dot's lucky!" answered the captain, much relieved.

"Sure is!" assented Jimmie, throwing out his chest. "You see, Captain,
we're mascots for you. We've brought you good luck!"

Joining in the laugh that greeted this remark the captain ordered the men
who had been at work upon the boats to cease their operations. A hand was
again posted aloft to act as lookout.

After a short consultation between von Kluck and the mate it was decided
to proceed on the course traveled by the steamer from which Frank Shaw
had recently escaped. They intended to pass between the Shetland islands
and the coast of Scotland in an attempt to make a port on the west side
of England, believing that there would be less danger in this procedure.
Accordingly all sail possible was made.

As if understanding the necessity for haste the vessel leaned far over
under the press of canvas and sprang forward with increased speed.

"We ought to make the west coast of England in a short time, Captain, at
this rate," said Ned as he noted with satisfaction the rate at which the
Lena Knobloch was traveling through the water.

"I don'd know!" declared von Kluck. "Dere's nasty vedder oop dere!" he
added, pointing to the western sky. "I don'd like id!"

"It can't very well blow hard enough to stop us, can it?"

"Don'd you tink it can't blow hard in dese vatters! Ask me--I know!"
replied the captain sagely wagging his head.

With eager looks the boys watched the gathering clouds to westward. The
captain's prediction seemed about to be verified.

An uncommonly strong puff of wind struck the schooner heeling her far
over to s