DESCRIPTION OF THE LONDON HARBORS.—THE CATHARINE DOCK.—ENORMOUS STORE-HOUSES.—HOW THE TUNNEL WAS BUILT.—PLAN OF THE FRENCH ENGINEER, ISAMBERT BRUNEL.—HOW THE WORK WAS CHECKED BY A BREAK IN THE BED OF THE THAMES.—SIX LIVES LOST.—REMARKABLE RESCUE OF THE SON OF MR. BRUNEL.—ENORMOUS LABOR AND STRUGGLE AGAINST THE ELEMENTS.—TRIUMPH AT LAST.—THE MOST REMARKABLE RAILROAD IN THE WORLD.—LONDON CROSSED UNDERGROUND BY A SERIES OF TUNNELS.—HOW LIGHT AND AIR IS PRODUCED.—THE NEWEST IMPROVEMENTS OF THE ROAD.—THE CARS PASSING UNDER THE DWELLING OF THE DEAD. 662 XLVI. DUNGEONS. LIFE IN THEM.—ANCIENT DUNGEONS.—THE PRISON OF ST. PAUL.—THE DUCAL PALACE.—“SOTTO PIOMBI.”—THE POZZI.—SHUT UP IN THE DARK CELLS.—A NIGHT OF HORROR.—A GUIDE’S BLUNDER.—DUNGEONS OF ST. PETERSBURG.—PETER THE GREAT TORTURING HIS SON.—A PRINCESS DROWNED IN PRISON. 675 XLVII. ANIMALS UNDER GROUND. HORSES IN MINES.—EFFECT OF AN EVEN TEMPERATURE ON HORSES AND MULES.—EFFECT OF DEPRIVATION OF LIGHT.—WALKING IN DARKNESS.—RATS IN MINES.—A MONKEY IN A SILVER MINE.—THE CONSTERNATION HE CREATED.—WHAT HE WAS SUPPOSED TO BE.—HIS UNHAPPY FATE.—A MONKEY AT SEA.—HIS PRANKS.—DEMOCRATIC HABITS.—HOW HE LOST HIS LIFE.—HIS LAST PERFORMANCE.—DOGS IN MINES, AND THE EFFECT OF UNDERGROUND CONFINEMENT.—JOY AT REACHING DAYLIGHT AGAIN.—TWO DOGS AT SEA, AND WHAT THEY DID.—A DOG SAILOR, AND WHAT HE DID.—HIS UNHAPPY END. 686 XLVIII. OUT OF PRISON. WONDERFUL ESCAPE FROM A FRENCH PRISON.—PLANS OF ESCAPE.—A LONG LABOR.—TUNNELLING THROUGH A WALL.—INGENUITY OF A SAILOR.—LUCKY ACCIDENTS.—DISCOURAGING EVENTS.—HOW SUCCESS WAS ATTAINED.—ELUDING THE GUARDS.—REACHING A PLACE OF SAFETY. 695 XLIX. THE GAMBLING HELLS OF GERMANY. THE FOUR GREAT SPAS.—DESCRIPTION OF BADEN, HOMBURG, WIESBADEN, AND EMS.—ROULETTE AND ROUGE-ET-NOIR.—SPLENDOR OF THE SALOONS.—THE PERSONS WHO FREQUENT THEM.—PROFITS AND PECULIARITIES OF THE DIRECTION.—THE PHILOSOPHY OF GAMBLING.—WHY PLAYERS LOSE.—STRANGE SUPERSTITIONS OF BETTORS.—THE INVALIDS.—DROLL SCENES AT THE PUMP-ROOM.—THE MAN WITH A SNAKE IN HIS STOMACH.—THE ROBUST HYPOCHONDRIAC. 705 L. GAMING AND GAMESTERS ABROAD. FOREIGN AND DOMESTIC SUMMER RESORTS.—THE ADVANTAGE OF THE FORMER.—MYSTERIOUS CHARACTERS.—A TRIO OF CELEBRATED GAMESTERS.—THEIR EXTRAORDINARY HISTORY.—TRAGIC FATE OF A YOUNG RUSSIAN OFFICER.—TEMPTATION, DESPAIR, AND SUICIDE OF A BEAUTIFUL ENGLISH GIRL.—A LUCKY BANKER’S CLERK.—A HUNGARIAN HANGING HIMSELF FOR A WARNING.—ECCENTRICITIES OF CROUPIERS.—A CALM-BLOODED HOLLANDER.—THE SKELETON IN THE CLOSET.—ROSE-STREWN ROADS TO RUIN. 721 LI. SUBTERRANEAN DWELLINGS.