[ CHAPTER XVI. — HUSBAND AND WIFE. ]
[ CHAPTER XVII. — THE SHADOW OF THE AFRICAN FOREST. ]
[ CHAPTER XVIII. — INQUIRIES. ]
[ CHAPTER XIX. — THE DEAD ALIVE. ]
[ CHAPTER XX. — FRANK’S STORY. ]
[ CHAPTER XXI. — THE DIVING BUSINESS. ]
[ CHAPTER XXII. — THE ISLET OF SANTA CRUZ. ]
[ CHAPTER XXIII. — THE OCEAN DEPTHS. ]