"He has, with the fruits of my industry," exclaimed Mr. Joyce. "Do you
know him? I imagine from your expressions that you do?"

"Do we know him?" repeated Billy. "I should say we do."

Frank soon appeased old Mr. Joyce's curiosity and told him of their
experiences in Africa with Luther Barr pitted against them.

"If Luther Barr intends making money out of duplicates of the Buzzard,
that explains a whole lot of things," cried Harry, as Frank concluded.

"That's right," cried Frank. "I shouldn't wonder if he's at the bottom
of this whole business. I only wish we had the evidence against him."

"Don't I too?" rejoined Harry; "but he covers up his tracks too
cleverly."




CHAPTER IX.

THE GRASSHOPPER'S MISHAP.


The grounds by noon were fairly alive with crowds of curious men,
women and children, and every train brought more. They swarmed about
the aerodromes and almost drove the mechanics and aviators crazy with
the ridiculous questions they asked.