VARIOUS WAYS OF MINING GOLD.—SLUICING AND HYDRAULIC MINING.—ACCIDENT TO A MINER.—A NARROW ESCAPE.—POWER OF WATER IN HYDRAULIC MINING.—EFFECT ON RIVERS AND BAYS.—A SCENE OF DESOLATION.—QUARTZ MINING.—QUICKSILVER AND ITS AMALGAM.—STOCK OPERATIONS.—THE MARIPOSA MINES.—THE AUTHOR’S VISIT.—HAYWARD’S MINE.—MANIPULATION OF MARIPOSA.—FUNNY STORY OF A SEA CAPTAIN.—HOW HE SUPERINTENDED A MINE.—HIS MANAGEMENT OF A MILL.—ACCIDENTS ON PURPOSE, AND HASTY FLIGHT. 802 LVII. COPPER AND COPPER MINES. ANTIQUITY OF COPPER.—USE OF IT AMONG THE ANCIENTS.—OLDEST COINS.—THE COLOSSUS OF RHODES.—COPPER MINES OF ENGLAND AND OTHER COUNTRIES.—NATIVE COPPER.—HOW IT IS WORKED.—OVERTHROWING A MASS.—A LUMP WEIGHING EIGHT HUNDRED TONS.—MALACHITE. 817 LVIII. THE CATACOMBS OF ROME. THEIR AGE AND EXTENT.—THE SEVEN HILLS HONEYCOMBED.—HOW THE CATACOMBS WERE MADE.—THEIR USES.—THE CHRISTIAN MARTYRS.—IMMENSE BURIAL VAULTS.— MILLIONS OF PERSONS BURIED.—RESORTS OF ROBBERS.—STRANGE ADVENTURES.—VISITING THE CHURCH OF THE CAPUCHINS.—FANCY OF AN IRREVERENT AMERICAN.—DOWN THE CATACOMBS.—STORY OF THE GUIDE.—STRANGE EXPERIENCE OF TWO AMERICANS. 829 LIX. THE PARISIAN RAG-PICKERS. THEIR NUMBER AND EQUIPMENT.—THEIR KEEN-SIGHTEDNESS AND SKILL.—THE PLEASURE OF THE BOTTLE.—SEEKING COMFORT UNDER DIFFICULTIES.—UNWHOLESOME MAGAZINES.—WHERE AND HOW THE CHIFFONNIERS LIVE.—DISMAL AND NOISOME ABODES.—A SOUP LOTTERY.—QUAINT SCENES IN CHEAP BOOK-SHOPS.—TASTING ROAST CAT AND STEWED PUPPY.—ROMANCE IN DIRT-HEAPS.—A HIDEOUS HAG ONCE A FAMOUS BEAUTY.—PENITENCE AND REFORMATION THROUGH FIRE. 844 LX. BRIGANDAGE AND PIRACY. RELATIONS OF THE STEAM ENGINE TO HONESTY.—PIRACY AND STEAMSHIPS.—HOW THE SLAVE TRADE WAS BROKEN UP.—STORIES OF BRIGANDS.—EXPLOITS OF SPANISH ROBBERS.—“ROAD AGENTS” IN CALIFORNIA.—AN ADVENTURE WITH HIGHWAYMEN.—AN ARMED STAGE COACH.—THE HAUNTS OF THE ROBBERS.—STORY OF A PLUNDERED PASSENGER.—“PUT UP YOUR HANDS.”—AN EXCITING INCIDENT.—BROAD-HORNS AND KEEL BOATS.—MIKE FINK AND THE CLERGYMAN.—PIRACY ON THE MISSISSIPPI.—A FIGHT WITH RIVER PIRATES.—A CAPTAIN AND CREW MURDERED.—VISIT TO A ROBBER’S CAVE. 853 LXI. BURIED TREASURES. CAPTAIN KIDD.—HIS HISTORY.—HOW HE MADE HIS FORTUNE.—HIS MELANCHOLY FATE.—JOINT STOCK IN THE ADVENTURE GALLEY.—SEARCHING FOR TREASURES.—STORIES OF THE SEA-COAST.—TRADITIONS.—ADVENTURES OF A TREASURE-HUNTER.—BILL SANBORN, AND WHAT HE DID.—JIM FOLLETT’S DOG.—A PRACTICAL JOKER.—A MESSAGE FROM THE SANDS OF THE SEA.—BILL SANBORN’S DREAM.—FINDING THE CHEST.—A SUPERNATURAL VISITOR. 866 LXII. OPERATIONS AT HELLGATE.