THE EXHIBITION--THE BROKEN COLUMN--THE JEWEL CASKET--JUDGE WINDEYER'S COUCH--THE UNDERGROUND BRIDGE 73 CHAPTER XII. THE LURLINE CAVE--THE FOSSIL BONE CAVE--THE SNOWBALL CAVE 83 CHAPTER XIII. THE BONE CAVES 88 CHAPTER XIV. THE IMPERIAL CAVE--THE WOOL SHED AND THE GRAVEL PITS--THE ARCHITECT'S STUDIO--THE BONE CAVE 92 CHAPTER XV. THE MARGHERITA CAVE 99 CHAPTER XVI. THE HELENA CAVE 102 CHAPTER XVII. THE GROTTO CAVE 108 CHAPTER XVIII. THE LUCINDA CAVE 113 CHAPTER XIX. KATIE'S BOWER 116 CHAPTER XX. THE RIGHT-HAND BRANCH OF THE IMPERIAL CAVE--THE SUBTERRANEAN RIVER 122 CHAPTER XXI. THE FOSSIL BONE CAVE, THE SPARKLING ROCK, AND THE CRYSTAL ROCK 133 CHAPTER XXII. THE SHAWL CAVE 136 CHAPTER XXIII. LOT'S WIFE 139 CHAPTER XXIV. THE CRYSTAL CITIES--THE SHOW-ROOM AND THE GRAND STALACTITES 147 CHAPTER XXV. THE FAIRIES' BOWER--THE SELINA CAVE--THE MYSTERY--NELLIE'S GROTTO 154 CHAPTER XXVI. THE VESTRY, THE JEWEL CASKET, THE BRIDAL VEIL, AND THE FLOWERING COLUMN 163 CHAPTER XXVII. HOW CAVES ARE MADE--THE WORK OF AGES 168 CHAPTER XXVIII. THE GARDEN PALACE--THE STALAGMITE CAVE AND THE GEM OF THE WEST 174 CHAPTER XXIX. THE FAIRIES' RETREAT--THE QUEEN'S DIAMONDS 181 CHAPTER XXX. GENERAL IMPRESSIONS--CAVES UNEXPLORED 184 CHAPTER XXXI. CONCLUSION 189 LIST OF ILLUSTRATIONS. THE CORAL GROTTO _frontispiece_ THE GRAND ARCH ENTRANCE _To face page_ 20 THE GRAND ARCH--LOOKING EAST " 25 CAMP CREEK " 29 THE DEVIL'S COACH HOUSE " 33 THE NORTHERN ENTRANCE TO THE DEVIL'S COACH HOUSE " 37 THE NETTLE CAVE " 43 THE ARCH CAVE " 48