"Those threads haven't been filed," he said, "they've worn. Very careless not to have noticed that. It's surprising that it held on so long."

"It might have held for a year if the car was run at average speed," said Jimsy slowly, "but the minute it was raced beyond its normal rate the weak part would have gone."

"What do you mean to imply?" blustered Fanning, though his face was pale and his breath came quickly.

"I don't imply anything," said Jimsy slowly, "but I'd like to know who filed this cap down."

"Pshaw! You are dreaming," scoffed Fanning.

A dull flush overspread Jimsy's ordinarily placid face.

"After a while I'll wake up, maybe," he said, "and then——." He stopped.

"Well, let's see about getting Roy home," he said, "Peggy, you can drive the Blue Bird and Fanning and Miss Mortlake can sit in the other machine as soon as we get the wheel back. Then Jess and I will go ahead in the Red Dragon Fly and break the news to Miss Prescott."

Shortly thereafter the two autos moved slowly off, while the aeroplane raced above them, going at a far faster speed.

Regina turned to Fanning.