IX. THE FLIGHT OF THE "SILVER COBWEB"
X. AN AERIAL POST OFFICE
XI. THE MARKED BILL
XII. WHAT HAPPENED TO ROY
XIII. PLOT AND COUNTERPLOT
XIV. HOW THEY WORKED OUT
XV. WHAT MORTLAKE DID
XVI. THE MISSING SIDE-COMB
XVII. JIMSY'S SUSPICIONS ARE ROUSED
XVIII. A BOLT FROM THE BLUE
XIX. THE GATHERING OF THE MAN-BIRDS
XX. AN UNEXPECTED MEETING
XXI. THE START OF THE SKY CRUISE
XXII. THE WHITE PERIL
XXIII. OUT OF THE CLOUDS
XXIV. FRIENDS AND FOES--CONCLUSION




CHAPTER I.

A NEW VENTURE IN SANDY BEACH.


"It isn't to be a barn; that's one thing certain. Who ever saw a barn with
skylights on it?"

Peggy Prescott, in a pretty, fluffy morning dress of pale green, which set
off her blonde beauty to perfection, laid down her racket, and, leaving