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BELOW THE SURFACE.

DIFFUSION OF KNOWLEDGE.--WHAT THE WORLD BELIEVES.--MUNGO PARK IN AFRICA.--WHY THE NATIVES PITIED HIM.--EXTENT OF UNDERGROUND LIFE.--DISTRIBUTION OF THE EARTH'S WEALTH.--VALUE OF MINES.--THEIR EXTENT AND IMPORTANCE.--COAL AND IRON.--MYSTERIES OF MINES.--EXPERIENCE WITH A NOVICE.--CHANGES OF SEASONS TO A MINER.--DANGERS IN MINES.--LIFE IN CAVERNS.--UNDERGROUND IN METAPHOR.--SOCIAL MINING.--OBJECT OF THIS VOLUME. Page 27

DISCOVERY OF COAL.

BORINGS AND SHAFTS.

HOW COAL MINES ARE DISCOVERED.--OUTCROPPINGS.--SCIENTIFIC RESEARCHES.--HOW A MARBLE QUARRY WAS FOUND.--BORING A WELL, AND WHAT CAME OF IT.--A LOCAL DEBATING SOCIETY.--INTIMATE RELATIONS OF COAL MINES AND THE STEAM ENGINE.--STRIKING OIL.--"DAD'S STRUCK ILE."--THE UNHAPPY MAIDEN'S FATE.--COAL INSTEAD OF WATER.--THE TOOLS TO BE USED.--A DEEP HOLE.--TERRIBLE ACCIDENT, AND A MINER'S COOLNESS.--SINKING SHAFTS.--AN INGENIOUS APPARATUS.--ACCIDENTS IN SHAFTS.--REQUIREMENTS OF THE LAW. 53

ACCIDENTS IN SHAFTS.

SILVER MINES AND MINING.

SILVER MINING IN NEVADA.

HOW GOLD WAS DISCOVERED IN NEVADA.--A PECULIAR "BLACK SAND," AND WHAT CAME OF IT.--SILVER CURSED AND THROWN AWAY.--ACCIDENTAL DISCOVERY OF THE VALUE OF THE ORE.--H. T. P. COMSTOCK.--THE COMSTOCK LODE.--HOW MINING RECORDS WERE KEPT.--YIELD OF THE NEVADA MINES.--BONANZA AND BORRASCA.--THE BIG BONANZA.--THE GRAVE OF THE FORESTS.--"WASHOE ZEPHYRS."--PAY ROLLS OF THE MINING COMPANIES.--INTERESTING DETAILS. 97

SPECULATIONS IN NEVADA MINES.

MINES AND MINING ENTERPRISES OF NORTH AFRICA.

MINING AMONG THE MOORS, BERBERS, AND ARABS.--THE FRENCH CONQUEST.--GEOLOGICAL SURVEYS.--MINERAL WEALTH OF ALGERIA.--A WONDERFUL IRON MINE.--MOKTER-EL HADID.--HOW THE MINE IS WORKED.--VISIT TO A MOUNTAIN OF SALT.--A REMARKABLE FORMATION.--ARTESIAN WELLS IN THE DESERT.--SCENE AT THE OPENING OF ONE.--EFFECTS ON THE PALM-TREE.--A PROPOSED INLAND SEA.--THE SUEZ CANAL AND ITS HISTORY.--HOW IT WAS MADE.--ADVANTAGES TO THE WORLD'S COMMERCE. 118


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