“I’m going to rummage through these lockers,” declared Cora, jumping up and going into the little cabin. “Perhaps there are some spare parts on hand.”

A moment later she gave an exclamation of triumph.

“Here they are!” she cried, holding up a pair of the much desired rings.

“Oh, I’m so glad!” exclaimed Bess.

“Takes a woman to do things,” said Belle in a superior way.

The boys looked a little sheepish, but at the same time delighted.

“She’s a fairy all right,” conceded Walter.

“You’re the real thing, sis,” beamed Jack, as he held out his hand for the rings. “And now for the dirty work.”

They adjusted the rings and overhauled the rest of the engine, which proved to be in fairly good condition. There were no radical defects, and by dint of hard work they soon had the entire machinery in what seemed to be good working order.

“There,” panted Jack, as he straightened up, “I guess we’re some little machinists, all right.”