“I want to see the monkey!” wailed Freddie again.

“There isn’t any monkey,” Bert said.  “It isn’t exactly a hand organ.  It’s one that works by steam, I imagine,” he said.  “It’s part of the merry-go-round.”

“That’s right.  It’s a good organ, too,” said the ragged, lanky boy, who was working away at the engine, while the red-faced man had started for the front of the truck.  Hearing the melody the red-faced man turned to the boy and angrily cried: 

“Here!  I didn’t tell you to turn that music on!  Shut it off, do you hear!”

“My, what a cross man!” said Flossie, in what she meant to be a whisper.

“Hush!” her father said.

“Shut that organ off!  What’d you turn it on for, Bob?” grumbled the man.

“I didn’t turn it on, Mr. Blipper.  It turned itself on—­too much steam, I guess.”

“Well, shut it off, do you hear!  I don’t want to play music when I don’t get any money for it.  Shut it off!”

The boy did something to the engine and the organ music died away in a sad wail.

“Oh, dear!” sighed Flossie.

“Now we can’t have any dance,” lamented Nan.

“How long are you going to stop here, Mr.—­er—­did I understand your name was Blipper?” asked Mr. Bobbsey, thinking he might arrange to have the organ played a little while for the children.

“Blipper is my name—­Aaron Blipper,” answered the man.  “Sole owner and proprietor of Blipper’s Merry-Go-Round which will exhibit for a week, and maybe more, at the Bolton County Fair.”

“My name is Bobbsey,” went on the father of the twins.  “Your name and mine have the same first letter, anyhow.  I was going to say that if you were going to remain here a while I’d give you a dollar to let the organ play for the children.  This is a Sunday school picnic.”

“I guessed it was,” said Mr. Blipper.  “Well, if you was to give me a dollar I’d have Bob turn the music on again.  I think a dollar will pay for what coal I burn in the engine.  The organ is worked by the engine.  I can’t turn it by hand, or I’d let Bob do that.  But I’ll play for a dollar.”

“Here you are then,” said Mr. Bobbsey, and he passed over a bill.

“Turn the organ on, Bob!” ordered Mr. Blipper.  “And while we’re waiting here get a pail and water the horses.  Might as well make yourself useful as well as ornamental.”

To the Bobbsey twins it seemed that Bob had been making himself busy, if not useful, ever since the merry-go-round had halted near the picnic grounds.

The boy turned a handle and once more the organ began grinding out music of one kind or another.  It was not very good, of course, but it pleased the children.  Soon Flossie and Freddie were dancing on the green grass beside the road, and Nan and many of the other children were also enjoying themselves in this way.  Though it was a Sunday school picnic, such simple dances as the children did could not be found fault with by any one.