k to Barbary singing songs and feeling proud of the mischief they
had done. Then they used to make the people they had caught write home
to their friends for money. And if the friends sent no money, the
pirates often threw the people into the sea.

Now one sunshiny day the Doctor and Dab-Dab were walking up and down on
the ship for exercise; a nice fresh wind was blowing the boat along,
and everybody was happy. Presently Dab-Dab saw the sail of another
ship a long way behind them on the edge of the sea. It was a red sail.

"I don't like the look of that sail," said Dab-Dab. "I have a feeling
it isn't a friendly ship. I am afraid there is more trouble coming to
us."

Jip, who was lying near taking a nap in the sun, began to growl and
talk in his sleep.

"I smell roast beef cooking," he mumbled--"underdone roast beef--with
brown gravy over it."

"Good gracious!" cried the Doctor. "What's the matter with the dog?
Is he SMELLING in his sleep--as well as talking?"

"I suppose he is," said Dab-Dab. "All dogs can smell in their sleep."

"But what is he smelling?" asked the Doctor.

"There is no roast beef cooking on our ship." "No," said Dab-Dab. "The
roast beef must be on that other ship over there."

"But that's ten miles away," said the Doctor. "He couldn't smell that
far surely!"

"Oh, yes, he could," said Dab-Dab. "You ask him."

Then Jip, still fast asleep, began to growl again and his lip curled up
angrily, showing his clean, white teeth.

"I smell bad men," he growled--"the worst men I ever smelt. I smell
trouble. I smell a fight--six bad scoundrels fighting against one
brave man. I want to help him. Woof--oo--WOOF!" Then he barked, loud,
and woke himself up with a surprised look on his face.

"See!" cried Dab-Dab. "That boat is nearer now. You can count its
three big sails--all red. Whoever it is, they are coming after us.... I
wonder who they are."

"They are bad sailors," said Jip; "and their ship is very swift. They
are surely the pirates of Barbary."

"Well, we must put up more sails on our boat," said the Doctor, "so we
can go faster and get away from them. Run downstairs, Jip, and fetch
me all the sails you see."

The dog hurried downstairs and dragged up every sail he could find.

But even when all these were put up on the masts to catch the wind, the
boat did not go nearly as fast as the pirates'--which kept coming on
behind, closer and closer.

"This is a poor ship the Pr