The party in full uniform swung past our three young adventurers. Lieutenant Bradbury was among them. He bowed and was about to pass on when he stopped and fell back.

"Now, don't get nervous, and do your best," he said to Peggy; "I'm sure that we shall all have reason to be proud of the Golden Butterfly before these tests are over."

"I hope so," rejoined Peggy; "we shall do our best, at any rate."

"I know you will, and now if you'll excuse me I must be hurrying on. The board has an immense amount of work to do before ten o'clock, the official starting hour."

The trio, left to themselves, made for the shed which bore the legend "Nameless" above its door. Many curious eyes followed them as they paused before it, and Jimsy inserted a key in the stout padlock. Who could the two pretty girls in natty motor bonnets, with goggles attached, the plain, heavy skirts and dark shirt-waists be? Speculation ran rife. There was a regular stampede of reporters and photographers to the shed of the Nameless. But when they arrived there, to their chagrin, they found that their prospective victims had slipped inside and only the blank doors greeted them.

Among the crowd that hastened to try to solve the mystery of the Nameless was Fanning Harding, whose attention had been attracted by the rush of the crowd. At his side was Regina Mortlake. They arrived just in time to hear somebody say:

"It's two pretty girls and a good-looking boy. They're just kids."

Fanning and Regina exchanged glances. The girl actually turned pale.

"They are here after all," she exclaimed, "and I thought you said they weren't."

"Well, how on earth was I to know that they had hidden their machine under that name. There are so many freak craft here that——"