CHAPTER I. THE ARRIVAL OF THE EUTERPE-THALIA

CHAPTER II. THE SARDIS WORKS

CHAPTER III. MARGARET RALEIGH

CHAPTER IV. THE MISSION OF SAMUEL BLOCK

CHAPTER V. UNDER WATER

CHAPTER VI. VOICES FROM THE POLAR SEAS

CHAPTER VII. GOOD NEWS GOES FROM SARDIS

CHAPTER VIII. THE DEVIL ON THE DIPSEY

CHAPTER IX. THE ARTESIAN RAY

CHAPTER X. "LAKE SHIVER"

CHAPTER XI. THEY BELIEVE IT IS THE POLAR SEA

CHAPTER XII. CAPTAIN HUBBELL TAKES COMMAND

CHAPTER XIII. LONGITUDE EVERYTHING

CHAPTER XIV. A REGION OF NOTHINGNESS

CHAPTER XV. THE AUTOMATIC SHELL

CHAPTER XVI. THE TRACK OF THE SHELL

CHAPTER XVII. CAPTAIN HUBBELL DECLINES TO GO WHALING

CHAPTER XVIII. Mr. MARCY'S CANAL

CHAPTER XIX. THE ICY GATEWAY

CHAPTER XX. "THAT IS HOW I LOVE YOU"

CHAPTER XXI. THE CAVE OF LIGHT

CHAPTER XXII. CLEWE'S THEORY

CHAPTER XXIII. THE LAST DIVE OF THE DIPSEY

CHAPTER XXIV. ROVINSKI COMES TO THE SURFACE

CHAPTER XXV. LAURELS