"What prisoners?" asked Shirley, fascinated in spite of herself.
"Prisoners we robbed," said Sarah solemnly. "We put long chains on them and they have to walk up and down and they can't get out."
"Oh—Oh—I don't like them to have on long chains," Shirley wailed. "I want you to take them off, Sarah. Please, Sarah."
"Well," Sarah considered. "Perhaps I will. We might as well let the prisoners go, anyway. They make too much noise. Now the chains are off, Shirley."
Just as she said that, the noise sounded louder than before.
"Clank! Clank! Clank!"
"You said you took 'em off!" wept Shirley. "You said so, Sarah."
"I thought I did," admitted Sarah. "Wait till I get the door open and I'll see what made that last noise."
She had latched the door of the windmill and in the darkness it took her some time to find it. At last she got it open and the light streamed in, showing Shirley's face streaked with tears.
"I see what made the noise!" proclaimed Sarah triumphantly. "It's the jigger-thing pumping up and down."