XXXI.--The Mystery of Egyplosis, 163 XXXII.--The Sin of a Twin-Soul, 168 XXXIII.--The Doctor's Opinion of Egyplosis, 172 XXXIV.--Lyone's Confession, 176 XXXV.--Our Visit to the Infernal Palace, 183 XXXVI.--Arjeels, 194 XXXVII.--A Revelation, 202 XXXVIII.--Lyone's Manifesto to King and People, 206 XXXIX.--The Crisis in Atvatabar, 212 XL.--My Departure from the Palace of Tanje, 216 XLI.--We Are Attacked by the Enemy, 220 XLII.--The Battle Continued, 225 XLIII.--Victory, 229 XLIV.--The News of Atvatabar in the Outer World, 235 XLV.--The Voyages of the _Mercury_ and the _Aurora Borealis_, 244 XLVI.--The Arrest of Lyone, 249 XLVII.--The Council of War in Kioram, 253 XLVIII.--The Report of Astronomer Starbottle, 258 XLIX.--Preparation for War, 264 L.--I Visit Lyone in Calnogor, 267 LI.--The Death of Lyone, 271 LII.--The Battle of Calnogor, 279 LIII.--Victory, 283 LIV.--Reincarnation, 288 LV.--Lexington and Lyone Hailed King and Queen of Atvatabar, 292 LVI.--Our Reception in Calnogor, 298 LVII.--The Combined Ceremony of Marriage and Coronation, 304 LVIII.--The Death of Bhoolmakar, 310 LIX.--The History Concluded, 315 * * * * * LIST OF ILLUSTRATIONS. ARTIST, PAGE MAP OF THE INTERIOR WORLD, _Frontispiece_. I SIGNALLED THE ENGINEER FULL SPEED AHEAD, AND IN A SHORT TIME WE CROSSED THE ICE-FOOT AND ENTERED THE CHASM, _C. Durand Chapman_, 17 A SEMI-CIRCLE OF RIFLES WAS DISCHARGED AT THE UNHAPPY BRUTES. TWO OF THEM FELL DEAD IN THEIR TRACKS, " 29 THE TERROR INSPIRED BY THE PROFESSOR'S WORDS WAS PLAINLY VISIBLE ON EVERY FACE, " 35 AT THIS MOMENT A WILD CRY AROSE FROM THE SAILORS. WITH ONE VOICE THEY SHOUTED, "THE SUN! THE SUN!" " 41 ONE OF THE FLYING MEN CAUGHT FLATHOOTLY BY THE HAIR OF THE HEAD, AND LIFTED HIM OUT OF THE WATER, _R. W. Rattray_, 55