CHAPTER I. Vacation Days
CHAPTER II. "Speedway" vs. "Curlew"
CHAPTER III. Captain Simms, of the "Thespis"
CHAPTER IV. On Secret Service
CHAPTER V. Night Signals
CHAPTER VI. In the Dark
CHAPTER VII. The Naval Code
CHAPTER VIII. A Monkey Interlude
CHAPTER IX. Noddy and the Bear
CHAPTER X. "What Do You Make of It?"
CHAPTER XI. A Swim with a Memory
CHAPTER XII. A Tale from the Frozen Lands
CHAPTER XIII. A Night Alarm
CHAPTER XIV. Jack's Curiosity and Its Results
CHAPTER XV. Billy Takes the Trail
CHAPTER XVI. A "Ghostess" Abroad
CHAPTER XVII. One Mystery Solved
CHAPTER XVIII. Bill Sniggers Decides
CHAPTER XIX. What a "Hayseed" Did
CHAPTER XX. The "Curlew" in Trouble
CHAPTER XXI. The End of Jack's Holiday
CHAPTER XXII. "The Gem of the Ocean"
CHAPTER XXIII. Jack's Big Secret
CHAPTER XXIV. The Navy Department "Sits Up"
CHAPTER XXV. A Mystery on Board
CHAPTER XXVI. A "Flash" of Distress
CHAPTER XXVII. A Strange Wreck
CHAPTER XXVIII. Cast Away with a Python
CHAPTER XXIX. Captured by Radio
CHAPTER XXX. Thurman Plots
CHAPTER XXXI. The "Suitable Reward"
CHAPTER XXXII. The Plotter's Triumph
CHAPTER XXXIII. In the Power of the Enemy
CHAPTER XXXIV. The Search for Jack
CHAPTER XXXV. The Wireless Makes Good
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