Curiosities of Science, Past and Present A Book for Old and Young
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Curiosities of Science, Past and Present A Book for Old and Young

By John Timbs
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Table of Contents
  • CURIOSITIES OF SCIENCE, Past and Present. A BOOK FOR OLD AND YOUNG.
  • CONTENTS.
  • The Frontispiece.
    • THE GREAT ROSSE TELESCOPE.
  • The Vignette.
    • SIR HUMPHRY DAVY’S OWN MODEL OF HIS SAFETY-LAMP.
  • CURIOSITIES OF SCIENCE.
  • Introductory.
    • SCIENCE OF THE ANCIENT WORLD.
    • SCIENCE AT OXFORD AND CAMBRIDGE.
    • PLATO’S SURVEY OF THE SCIENCES.
    • FOLLY OF ATHEISM.
    • THE ART OF OBSERVATION.
    • MUTUAL RELATIONS OF PHENOMENA.
    • PRACTICAL RESULTS OF THEORETICAL SCIENCE.
    • PERPETUITY OF IMPROVEMENT.
    • THE EARLIEST ENGLISH SCIENTIFIC TREATISE.
    • PHILOSOPHERS’ FALSE ESTIMATES OF THEIR OWN LABOURS.
    • RELICS OF GENIUS.
    • THE ROYAL SOCIETY: THE NATURAL AND SUPERNATURAL.
    • THE PHILOSOPHER BOYLE.
    • SIR ISAAC NEWTON’S ROOMS AND LABORATORY IN TRINITY COLLEGE, CAMBRIDGE.
    • NEWTON’S “APPLE-TREE.”
    • NEWTON’S “PRINCIPIA.”
    • DESCARTES’ LABOURS IN PHYSICS.
    • CONIC SECTIONS.
    • POWER OF COMPUTATION.
    • “THE SCIENCE OF THE COSMOS.”
  • Physical Phenomena.
    • ALL THE WORLD IN MOTION.
    • THE AXIS OF ROTATION.
    • THE EARTH’S ANNUAL MOTION.
    • STABILITY OF THE OCEAN.
    • COMPRESSION OF BODIES.
    • THE WORLD IN A NUTSHELL.
    • THE WORLD OF ATOMS.
    • MINUTE ATOMS OF THE ELEMENTS: DIVISIBILITY OF MATTER.
    • WEIGHT OF AIR.
    • DURATION OF THE PYRAMID.
    • INERTIA ILLUSTRATED.
    • THE LEANING TOWER OF PISA.7
    • EARLY PRESENTIMENTS OF CENTRIFUGAL FORCES.
    • HEIGHT OF FALLS.
    • RATE OF THE FALL OF BODIES.
    • VARIETIES OF SPEED.
    • LIFTING HEAVY PERSONS.
    • “FORCE CAN NEITHER BE CREATED NOR DESTROYED.”
    • NOTHING LOST IN THE MATERIAL WORLD.
    • TIME AN ELEMENT OF FORCE.
    • CALCULATION OF HEIGHTS AND DISTANCES.
    • SAND IN THE HOUR-GLASS.
    • FIGURE OF THE EARTH.
    • HOW TO ASCERTAIN THE EARTH’S MAGNITUDE.
    • MASS AND DENSITY OF THE EARTH.
    • THE EARTH AND MAN COMPARED.
    • MEAN TEMPERATURE OF THE EARTH’S SURFACE.
    • TEMPERATURE OF THE EARTH STATIONARY.
    • THEORY OF CRYSTALLISATION.
    • IMMENSE CRYSTALS.
    • VISIBLE CRYSTALLISATION.
    • UNION OF MINERALOGY AND GEOMETRY.
    • REPRODUCTIVE CRYSTALLISATION.
    • GLASS BROKEN BY SAND.
  • Sound and Light.
    • SOUNDING SAND.
    • INTENSITY OF SOUND IN RAREFIED AIR.
    • DISTANCE AT WHICH THE HUMAN VOICE MAY BE HEARD.
    • THE ROAR OF NIAGARA.
    • FIGURES PRODUCED BY SOUND.
    • THE TUNING-FORK A FLUTE-PLAYER.
    • THEORY OF THE JEW’S HARP.
    • SOLAR AND ARTIFICIAL LIGHT COMPARED.
    • SOURCE OF LIGHT.
    • THE UNDULATORY SCALE OF LIGHT.
    • VISIBILITY OF OBJECTS.
    • THE SMALLEST BRIGHT BODIES.
    • VELOCITY OF LIGHT.
    • APPARATUS FOR THE MEASUREMENT OF LIGHT.
    • HOW FIZEAU MEASURED THE VELOCITY OF LIGHT.
    • WHAT IS DONE BY POLARISATION OF LIGHT.
    • MINUTENESS OF LIGHT.
    • THE IMPORTANCE OF LIGHT.
    • ACTION OF LIGHT ON MUSCULAR FIBRES.
    • LIGHT NIGHTS.
    • PHOSPHORESCENCE OF PLANTS.
    • PHOSPHORESCENCE OF THE SEA.
    • LIGHT FROM THE JUICE OF A PLANT.
    • LIGHT FROM FUNGUS.
    • LIGHT FROM BUTTONS.
    • COLOURS OF SCRATCHES.
    • MAGIC BUST.
    • COLOURS HIT MOST FREQUENTLY DURING BATTLE.
    • TRANSMUTATION OF TOPAZ.
    • COLOURS AND TINTS.
    • OBJECTS REALLY OF NO COLOUR.
    • THE DIORAMA—WHY SO PERFECT AN ILLUSION.
    • CURIOUS OPTICAL EFFECTS AT THE CAPE.
    • THE TELESCOPE AND THE MICROSCOPE.
    • INVENTION OF THE MICROSCOPE.
    • HOW TO MAKE THE FISH-EYE MICROSCOPE.
    • LEUWENHOECK’S MICROSCOPES.
    • DIAMOND LENSES FOR MICROSCOPES.
    • THE EYE AND THE BRAIN SEEN THROUGH A MICROSCOPE.
    • MICROSCOPICAL EXAMINATION OF THE HAIR.
    • THE MICROSCOPE AND THE SEA.
    • USE OF THE MICROSCOPE TO MINERALOGISTS.
    • FINE DOWN OF QUARTZ.
    • MICROSCOPIC WRITING.
    • HOW TO MAKE A MAGIC MIRROR.
    • SIR DAVID BREWSTER’S KALEIDOSCOPE.
    • THE KALEIDOSCOPE THOUGHT TO BE ANTICIPATED.
    • MAGIC OF PHOTOGRAPHY.
    • THE BEST SKY FOR PHOTOGRAPHY.
    • PHOTOGRAPHIC EFFECTS OF LIGHTNING.
    • PHOTOGRAPHIC SURVEYING.
    • THE STEREOSCOPE AND THE PHOTOGRAPH.
    • THE STEREOSCOPE SIMPLIFIED.
    • PHOTO-GALVANIC ENGRAVING.
    • SCIENCE OF THE SOAP-BUBBLE.
    • LIGHT FROM QUARTZ.
    • CAN THE CAT SEE IN THE DARK?
  • Astronomy.
    • THE GREAT TRUTHS OF ASTRONOMY.
    • ASTRONOMY AND DATES ON MONUMENTS.
    • “THE CRYSTAL VAULT OF HEAVEN.”
    • MUSIC OF THE SPHERES.
    • “MORE WORLDS THAN ONE.”
    • WORLDS TO COME—ABODES OF THE BLEST.
    • “GAUGING THE HEAVENS.”
    • VELOCITY OF THE SOLAR SYSTEM.
    • NATURE OF THE SUN.
    • STRUCTURE OF THE LUMINOUS DISC OF THE SUN.
    • GREAT SIZE OF THE SUN ON THE HORIZON EXPLAINED.
    • TRANSLATORY MOTION OF THE SUN.
    • THE SUN’S LIGHT COMPARED WITH TERRESTRIAL LIGHTS.
    • ACTINIC POWER OF THE SUN.
    • HEATING POWER OF THE SUN.
    • CAUSE OF DARK COLOUR OF THE SKIN.
    • EXTREME SOLAR HEAT.
    • HOW DR. WOLLASTON COMPARED THE LIGHT OF THE SUN AND THE FIXED STARS.
    • “THE SUN DARKENED.”
    • THE SUN AND TERRESTRIAL MAGNETISM.
    • IS THE HEAT OF THE SUN DECREASING?
    • UNIVERSAL SUN-DIAL.
    • LENGTH OF DAYS AT THE POLES.
    • HOW THE DISTANCE OF THE SUN IS ASCERTAINED BY THE YARD-MEASURE.
    • HOW THE TIDES ARE PRODUCED BY THE SUN AND MOON.
    • SPOTS ON THE SUN.
    • HAS THE MOON AN ATMOSPHERE?
    • LIGHT OF THE MOON.
    • HEAT OF MOONLIGHT.
    • SCENERY OF THE MOON.
    • LIFE IN THE MOON.
    • THE MOON SEEN THROUGH LORD ROSSE’S TELESCOPE.
    • MOUNTAINS IN THE MOON.
    • THE MOON AND THE WEATHER.
    • THE MOON’S ATTRACTION.
    • MEASURING THE EARTH BY THE MOON.
    • CAUSE OF ECLIPSES.
    • VAST NUMBERS IN THE UNIVERSE.
    • FOR WHAT PURPOSE WERE THE STARS CREATED?
    • NUMBER OF STARS.
    • STARS THAT HAVE DISAPPEARED.
    • THE POLE-STAR FOUR THOUSAND YEARS AGO.
    • THE PLEIADES.
    • CHANGE OF COLOUR IN THE STARS.
    • DISTANCE OF THE NEAREST FIXED STAR FROM THE EARTH.
    • LIGHT OF A STAR SIXTEENFOLD THAT OF THE SUN.
    • DIVERSITIES OF THE PLANETS.
    • GRAND RESULTS OF THE DISCOVERY OF JUPITER’S SATELLITES.
    • WAS SATURN’S RING KNOWN TO THE ANCIENTS?
    • TEMPERATURE OF THE PLANET MERCURY.
    • SPECULATIONS ON VESTA AND PALLAS.
    • IS THE PLANET MARS INHABITED?
    • DISCOVERY OF THE PLANET NEPTUNE.
    • MAGNITUDE OF COMETS.
    • COMETS VISIBLE IN SUNSHINE—THE GREAT COMET OF 1843.
    • THE MILKY WAY UNFATHOMABLE.
    • DISTANCES OF NEBULÆ.
    • INFINITE SPACE.
    • Origin of Our Planetary System.
    • ORIGIN OF HEAT IN OUR SYSTEM.
    • AN ASTRONOMER’S DREAM VERIFIED.
    • FIRE-BALLS AND SHOOTING STARS.
    • THEORY AND EXPERIENCE.
    • METEORITES FROM THE MOON.
    • VAST SHOWER OF METEORS.
    • IMMENSE METEORITE.
    • NO FOSSIL METEORIC STONES.
    • THE END OF OUR SYSTEM.
    • BENEFITS OF GLASS TO MAN.
    • THE GALILEAN TELESCOPE.
    • WHAT GALILEO FIRST SAW WITH HIS TELESCOPE.
    • ANTIQUITY OF TELESCOPES.
    • NEWTON’S FIRST REFLECTING TELESCOPE.
    • SIR WILLIAM HERSCHEL’S GREAT TELESCOPE AT SLOUGH.
    • THE EARL OF ROSSE’S GREAT REFLECTING TELESCOPE.
    • GIGANTIC TELESCOPES PROPOSED.
    • LATE INVENTION OF OPTICAL INSTRUMENTS.
    • A TRIAD OF CONTEMPORARY ASTRONOMERS.
    • A PEASANT ASTRONOMER.
    • SHIRBURN-CASTLE OBSERVATORY.
    • LACAILLE’S OBSERVATORY.
    • NICETY REQUIRED IN ASTRONOMICAL CALCULATIONS.
    • CAN STARS BE SEEN BY DAYLIGHT?
    • LOST HEAT OF THE SUN.
    • THE LONDON MONUMENT USED AS AN OBSERVATORY.
  • Geology and Paleontology.
    • IDENTITY OF ASTRONOMY AND GEOLOGY.
    • THE GEOLOGY OF ENGLAND
    • PROBABLE ORIGIN OF THE ENGLISH CHANNEL.
    • HOW BOULDERS ARE TRANSPORTED TO GREAT HEIGHTS.
    • WHY SEA-SHELLS ARE FOUND AT GREAT HEIGHTS.
    • SAND OF THE SEA AND DESERT.
    • PEBBLES.
    • ELEVATION OF MOUNTAIN-CHAINS.
    • THE CHALK FORMATION.
    • WEAR OF BUILDING-STONES.
    • PHENOMENA OF GLACIERS ILLUSTRATED.
    • ANTIQUITY OF GLACIERS.
    • FLOW OF THE MER DE GLACE.
    • THE ALLUVIAL LAND OF EGYPT: ANCIENT POTTERY.
    • SUCCESSIVE CHANGES OF THE TEMPLE OF SERAPIS.
    • THE GROTTO DEL CANE.
    • THE WATERS OF THE GLOBE GRADUALLY DECREASING.
    • THE SALT LAKE OF UTAH.
    • FORCE OF RUNNING WATER.
    • THE ARTESIAN WELL OF GRENELLE AT PARIS.
    • HOW THE GULF-STREAM REGULATES THE TEMPERATURE OF LONDON.
    • SOLVENT ACTION OF COMMON SALT AT HIGH TEMPERATURES.
    • FREEZING CAVERN IN RUSSIA.
    • INTERIOR TEMPERATURE OF THE EARTH: CENTRAL HEAT.
    • DISAPPEARANCE OF VOLCANIC ISLANDS.
    • PERPETUAL FIRE.
    • ARTESIAN FIRE-SPRINGS IN CHINA.
    • VOLCANIC ACTION THE GREAT AGENT OF GEOLOGICAL CHANGE.
    • THE SNOW-CAPPED VOLCANO.
    • TRAVELS OF VOLCANIC DUST.
    • GREAT ERUPTIONS OF VESUVIUS.
    • EARTH-WAVES.
    • RUMBLINGS OF EARTHQUAKES.
    • HOW TO MEASURE AN EARTHQUAKE-SHOCK.
    • EARTHQUAKES AND THE MOON.
    • THE GREAT EARTHQUAKE OF LISBON.
    • GEOLOGICAL AGE OF THE DIAMOND.
    • WHAT WAS ADAMANT?
    • WHAT IS COAL?
    • TORBANE-HILL COAL.
    • HOW MALACHITE IS FORMED.
    • LUMPS OF GOLD IN SIBERIA.
    • SIR ISAAC NEWTON UPON BURNET’S THEORY OF THE EARTH.
    • “THE FATHER OF ENGLISH GEOLOGY.”
    • DR. BUCKLAND’s GEOLOGICAL LABOURS.
    • Discoveries of M. Agassiz.
    • SUCCESSION OF LIFE IN TIME.
    • PRIMITIVE DIVERSITY AND NUMBERS OF ANIMALS IN GEOLOGICAL TIMES.
    • ENGLAND IN THE EOCENE PERIOD.
    • FOOD OF THE IGUANODON.
    • THE PTERODACTYL—THE FLYING DRAGON.
    • MAMMALIA IN SECONDARY ROCKS.
    • FOSSIL HUMAN BONES.
    • THE MOST ANCIENT FISHES.
    • EXTINCT CARNIVOROUS ANIMALS OF BRITAIN.
    • THE GREAT CAVE TIGER OR LION OF BRITAIN.
    • THE MAMMOTHS OF THE BRITISH ISLES.
    • THE RHINOCEROS AND HIPPOPOTAMUS OF ENGLAND.
    • THE ELEPHANT AND TORTOISE.
    • COEXISTENCE OF MAN AND THE MASTODON.
    • HABITS OF THE MEGATHERIUM.
    • THE DINOTHERIUM, OR TERRIBLE BEAST.
    • THE GLYPTODON.
    • INMATES OF AN AUSTRALIAN CAVERN.
    • THE POUCH-LION OF AUSTRALIA.
    • THE CONEY OF SCRIPTURE.
    • A THREE-HOOFED HORSE.
    • TWO MONSTER CARNIVORES OF FRANCE.
    • GEOLOGY OF THE SHEEP.
    • THE TRILOBITE.
    • PROFITABLE SCIENCE.
    • EXTINCT GIGANTIC BIRDS OF NEW ZEALAND.
    • “THE MAESTRICHT SAURIAN FOSSIL” A FRAUD.
    • “THE OLDEST PIECE OF WOOD UPON EARTH.”
    • NO FOSSIL ROSE.
    • CHANGES ON THE EARTH’S SURFACE.
    • GEOLOGICAL TIME.
    • CURIOUS CAUSE OF CHANGE OF LEVEL.
    • THE OUTLINES OF CONTINENTS NOT FIXED.
  • Meteorological Phenomena.
    • THE ATMOSPHERE.
    • UNIVERSALITY OF THE ATMOSPHERE.
    • THE HEIGHT OF THE ATMOSPHERE.
    • COLOURS OF THE ATMOSPHERE.
    • BEAUTY OF TWILIGHT.
    • HOW PASCAL WEIGHED THE ATMOSPHERE.
    • VARIATIONS OF CLIMATE.
    • AVERAGE CLIMATES.
    • THE FINEST CLIMATE IN THE WORLD.
    • THE PUREST ATMOSPHERES.
    • SEA-BREEZES AND LAND-BREEZES ILLUSTRATED.
    • SUPERIOR SALUBRITY OF THE WEST.
    • FERTILISATION OF CLOUDS.
    • BAROMETRIC MEASUREMENT.
    • GIGANTIC BAROMETER.
    • THE ATMOSPHERE COMPARED TO A STEAM-ENGINE.
    • HOW DOES THE RAIN-MAKING VAPOUR GET FROM THE SOUTHERN INTO THE NORTHERN HEMISPHERE?
    • THE PHILOSOPHY OF RAIN.
    • INORDINATE RAINY CLIMATE.
    • HOW DOES THE NORTH WIND DRIVE AWAY RAIN?
    • SIZE OF RAIN-DROPS.
    • RAINLESS DISTRICTS.
    • ALL THE RAIN IN THE WORLD.
    • AN INCH OF RAIN ON THE ATLANTIC.
    • THE EQUATORIAL CLOUD-RING.
    • “THE EQUATORIAL DOLDRUMS”
    • BEAUTY OF THE DEW-DROP.
    • FALL OF DEW IN ONE YEAR.
    • GRADUATED SUPPLY OF DEW TO VEGETATION.
    • WARMTH OF SNOW IN ARCTIC LATITUDES.
    • IMPURITY OF SNOW.
    • SNOW PHENOMENON.
    • ABSENCE OF SNOW IN SIBERIA.
    • ACCURACY OF THE CHINESE AS OBSERVERS.
    • PROTECTION AGAINST HAIL AND STORMS.
    • TERRIFIC HAILSTORM.
    • HOW WATERSPOUTS ARE FORMED IN THE JAVA SEA.
    • COLD IN HUDSON’S BAY.
    • PURITY OF WENHAM-LAKE ICE.
    • ARCTIC TEMPERATURES.
    • DR. RAE’S ARCTIC EXPLORATIONS.
    • PHENOMENA OF THE ARCTIC CLIMATE.
    • INTENSE HEAT AND COLD OF THE DESERT.
    • TRANSPORTING POWER OF WINDS.
    • EXHILARATION IN ASCENDING MOUNTAINS.
    • TO TELL THE APPROACH OF STORMS.
    • REVOLVING STORMS.
    • IMPETUS OF A STORM.
    • HOW TO MAKE A STORM-GLASS.
    • SPLENDOUR OF THE AURORA BOREALIS.
    • VARIETIES OF LIGHTNING.
    • WHAT IS SHEET-LIGHTNING?
    • PRODUCTION OF LIGHTNING BY RAIN.
    • SERVICE OF LIGHTNING-CONDUCTORS.
    • ANCIENT LIGHTNING-CONDUCTOR.
    • THE TEMPLE OF JERUSALEM PROTECTED FROM LIGHTNING.
    • HOW ST. PAUL’S CATHEDRAL IS PROTECTED FROM LIGHTNING.
    • VARIOUS EFFECTS OF LIGHTNING.
    • A THUNDERSTORM SEEN FROM A BALLOON.
    • REMARKABLE AERONAUTIC VOYAGE.
  • Physical Geography of the Sea.
    • CLIMATES OF THE SEA.
    • THE CIRCULATION OF THE SEA.
    • TEMPERATURE OF THE SEA.
    • TRANSPARENCY OF THE OCEAN.
    • THE BASIN OF THE ATLANTIC.
    • GALES OF THE ATLANTIC.
    • SOLITUDE AT SEA.
    • BOTTLES AND CURRENTS AT SEA.
    • “THE HORSE LATITUDES”
    • “WHITE WATER” AND LUMINOUS ANIMALS AT SEA.
    • INVENTION OF THE LOG.
    • LIFE OF THE SEA-DEEPS.
    • DEPTHS OF OCEAN AND AIR UNKNOWN.
    • GREATEST ASCERTAINED DEPTH OF THE SEA.
    • RELATIVE LEVELS OF THE RED SEA AND MEDITERRANEAN.
    • THE DEPTH OF THE MEDITERRANEAN.
    • COLOUR OF THE RED SEA.
    • WHAT IS SEA-MILK?
    • THE BOTTOM OF THE SEA A BURIAL-PLACE.
    • WHY IS THE SEA SALT?
    • HOW TO ASCERTAIN THE SALTNESS OF THE SEA.
    • ALL THE SALT IN THE SEA.
    • PROPERTIES OF SEA-WATER.
    • SCENERY AND LIFE OF THE ARCTIC REGIONS.
    • ICEBERG OF THE POLAR SEAS.
    • IMMENSITY OF POLAR ICE.
    • OPEN SEA AT THE POLE.
    • RIVER-WATER ON THE OCEAN.
    • THE THAMES AND ITS SALT-WATER BED.
    • FRESH SPRINGS IN THE MIDDLE OF THE OCEAN.
    • “THE BLACK WATERS.”
    • GREAT CATARACT IN INDIA.
    • CAUSE OF WAVES.
    • RATE AT WHICH WAVES TRAVEL.
    • OCEAN-HIGHWAYS: HOW SEA-ROUTES HAVE BEEN SHORTENED.
    • ERROR UPON ERROR.
  • Phenomena of Heat.
    • THE LENGTH OF THE DAY AND THE HEAT OF THE EARTH.
    • NICE MEASUREMENT OF HEAT.
    • EXPENDITURE OF HEAT BY THE SUN.
    • DISTINCTIONS OF HEAT.
    • LATENT HEAT.
    • HEAT AND EVAPORATION.
    • HEAT AND MECHANICAL POWER.
    • HEAT OF MINES.
    • VIBRATION OF HEATED METALS.
    • EXPANSION OF SPIRITS.
    • HEAT PASSING THROUGH GLASS.
    • HEAT FROM GAS-LIGHTING.
    • HEAT BY FRICTION.
    • HEAT BY FRICTION FROM ICE.
    • WARMING WITH ICE.
    • REPULSION BY HEAT.
    • PROTECTION FROM INTENSE HEAT.
  • Magnetism and Electricity.
    • MAGNETIC HYPOTHESES.
    • THE CHINESE AND THE MAGNETIC NEEDLE.
    • KIRCHER’S “MAGNETISM.”
    • MINUTE MEASUREMENT OF TIME.
    • POWER OF A MAGNET.
    • HOW ARTIFICIAL MAGNETS ARE MADE.
    • POWER OF THE SUN’S RAYS IN INCREASING THE STRENGTH OF MAGNETS.
    • COLOUR OF A BODY AND ITS MAGNETIC PROPERTIES.
    • THE ONION AND MAGNETISM.
    • DECLINATION OF THE NEEDLE—THE EARTH A MAGNET.
    • THE AURORA BOREALIS.
    • EFFECT OF LIGHT ON THE MAGNET.
    • MAGNETO-ELECTRICITY.
    • ELECTRO-MAGNETS OF THE HORSE-SHOE FORM
    • ROTATION-MAGNETISM.
    • INFLUENCE OF PENDULUMS ON EACH OTHER.
    • WEIGHT OF THE EARTH ASCERTAINED BY THE PENDULUM.
    • ORIGIN OF TERRESTRIAL MAGNETISM.
    • THE NORTH AND SOUTH MAGNETIC POLES.
    • MAGNETIC STORMS.
    • FAMILIAR GALVANIC EFFECTS.
    • THE SIAMESE TWINS GALVANISED.
    • MINUTE AND VAST BATTERIES.
    • ELECTRIC INCANDESCENCE OF CHARCOAL POINTS.
    • VOLTAIC ELECTRICITY.
    • THE VOLTAIC BATTERY AND THE GYMNOTUS.
    • VOLTAIC CURRENTS IN MINES.
    • GERMS OF ELECTRIC KNOWLEDGE.
    • TEMPERATURE AND ELECTRICITY.
    • VAST ARRANGEMENT OF ELECTRICITY.
    • DECOMPOSITION OF WATER BY ELECTRICITY.
    • ELECTRICITY IN BREWING.
    • ELECTRIC PAPER.
    • DURATION OF THE ELECTRIC SPARK.
    • VELOCITY OF ELECTRIC LIGHT.
    • IDENTITY OF ELECTRIC AND MAGNETIC ATTRACTION.
    • THEORY OF THE ELECTRO-MAGNETIC ENGINE.
    • MAGNETIC CLOCK AND WATCH.
    • WHEATSTONE’S ELECTRO-MAGNETIC CLOCK.
    • HOW TO MAKE A COMMON CLOCK ELECTRIC.
    • DR. FRANKLIN’S ELECTRICAL KITE.
    • FATAL EXPERIMENT WITH LIGHTNING.
    • FARADAY’S ELECTRICAL ILLUSTRATIONS.
    • ORIGIN OF THE LEYDEN JAR.
    • DANGER TO GUNPOWDER MAGAZINES.
    • ARTIFICIAL CRYSTALS AND MINERALS.—“THE CROSSE MITE.”
  • The Electric Telegraph.
    • ANTICIPATIONS OF THE ELECTRIC TELEGRAPH.
    • ELECTRIC GIRDLE FOR THE EARTH.
    • CONSUMPTION OF THE ELECTRIC TELEGRAPH.
    • TIME LOST IN ELECTRIC MESSAGES.
    • THE ELECTRIC TELEGRAPH IN ASTRONOMY AND THE DETERMINATION OF LONGITUDE.
    • NON-INTERFERENCE OF GALVANIC WAVES ON THE SAME WIRE.
    • EFFECT OF LIGHTNING UPON THE ELECTRIC TELEGRAPH.
    • ELECTRO-TELEGRAPHIC MESSAGE TO THE STARS.
    • THE ATLANTIC TELEGRAPH.
  • Miscellanea.
    • HOW MARINE CHRONOMETERS ARE RATED AT THE ROYAL OBSERVATORY, GREENWICH.
    • GEOMETRY OF SHELLS.
    • HYDRAULIC THEORY OF SHELLS.
    • SERVICES OF SEA-SHELLS AND ANIMALCULES.
    • DEPTH OF THE PRIMEVAL SEAS.
    • NATURAL WATER-PURIFIERS.
    • HOW TO IMITATE SEA-WATER.
    • VELOCITY OF IMPRESSIONS TRANSMITTED TO THE BRAIN.
    • PHOTOGRAPHS ON THE RETINA.
    • DIRECT EXPLORATION OF THE INTERIOR OF THE EYE.
    • NATURE OF THE CANDLE-FLAME.
    • HOW SOON A CORPSE DECAYS.
    • MUSKET-BALLS FOUND IN IVORY.
    • NATURE OF THE SUN.
    • PLANETOIDS.
    • THE COMET OF DONATI.
  • FOOTNOTES:
  • GENERAL INDEX
  • Transcriber’s Notes
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