"Don't play with bugs, Sarah," pleaded Shirley, who knew too well the fatal attraction of all creeping and crawling things for her sister. "I don't like bugs. Leave them alone." "All right, I will," said Sarah with surprising amiability. "We'll go back to the cave; I'll take this stone and you needn't take any." Back to the windmill they went and nothing would please Sarah but closing the door again. She liked the dark, she said. "What's that?" cried Shirley, starting. "I heard a noise, Sarah." Sarah had heard it, too. "It's the clanking chains," she declared with relish. "What clanking chains?" whispered Shirley fearfully. "The chains we put on our prisoners," said Sarah whose imagination was stimulated by the dark pit in which she found herself. "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." The wings of the mill had turned lazily and the iron rods, jerked up and down, had made the clanking noise. "I don't want to play that any more," said Shirley with more decision than she usually showed. "We'll play we are firemen and climb the ladder," said Sarah, pointing to the narrow iron ladder that led to the top of the mill. And she actually helped the confiding Shirley to start the long upward climb and followed close behind her. Half way up, the inky darkness--for the narrow windows were few and far between, frightened Shirley and she begged to go back. Sarah cajoled and bullied her into continuing and the two children managed to make the steep climb and reach the platform at the top of the mill. As they stepped out on the boards a gust of wind caught the big fan-like sails and the pump began to sound with a loud clanking noise. This and the sensation of being high among the clouds terrified Shirley and she clung to Sarah, screaming.