CHAPTER XXI.

HOW WE WERE LIGHTED ON OUR WAY DOWN THE DARK AND SILENT RIVER.—SUDDEN AND FIERCE ONSLAUGHT UPON OUR BEAUTIFUL BOAT OF SHELL.—A FIGHT FOR LIFE AGAINST TERRIBLE ODDS, AND HOW BULGER STOOD BY ME THROUGH IT ALL.—COLD AIR AND LUMPS OF ICE.—OUR ENTRY INTO THE CAVERN WHENCE THEY CAME.—THE BOAT OF SHELL COMES TO THE END OF ITS VOYAGE.—SUNLIGHT IN THE WORLD WITHIN A WORLD, AND ALL ABOUT THE WONDERFUL WINDOW THROUGH WHICH IT POURED, AND THE MYSTERIOUS LAND IT LIGHTED. 140