Aberdeen, tides at, 23
Action and reaction, 69
Adams, discoverer of Neptune, 186
Admiralty Manual of Scientific Inquiry, 30, 31, 34
Admiralty tide tables, 29
Africa, Krakatoa dust over, 84
Analysis, harmonic, of tides, 34
Analysis of tide into its constituents, 33
Ancient tides on moon, 136
Annus Magnus of solar system, 72
Areas, conservation of, 61
Arklow, tides at, 23
Ascension, tides at, 24
Astronomical chronology, 147
Atlantic, Krakatoa dust over, 84
Atlantic, tides in, 38
Atmosphere, tides in, 40
Avon, tides in, at Bristol, 39
Ball-room, illustration, 62
Barometric records of Krakatoa airwave, 82
Batavia, Krakatoa heard at, 83
Bath, hot waters at, 89
Bay of Fundy, 39
Beds of rock, how formed, 149
Birmingham, lecture at, 148
Birth of moon, 118
Blast iron furnace, 87
Blue sun produced by Krakatoa, 84
Bodily tides of moon, 131
Brake illustrating friction, 68
Brickwork as a non-conductor, 87
Bristol Channel, 39
Bucket of water, oscillations in, 98
Cambrian rocks, 153
Cannon-ball, energy of, 51
Cardiff, tides at, 39
Caspian Sea, tides in, 38
Casting, cooling of, 79
Celebes, Krakatoa heard at, 83
Central America, 86
Change and full, tides at, 22
Chemical action in earth, 81
Chepstow, tides at, 39
Chronology, the two systems of, 147
Clifton, tides in Avon at, 39
Clock, illustration of, 49
Coal, 11
Coincidence of moon's rotation and revolution, 134
Combustion, heat of, 92
Cones, volume of, 151
Conservation of spin or areas, 64
Constituent tides, 35
Consumption of energy by tides, 48
Cooling, laws of, 79
Cooling of earth from primitive heat, 87
Crane, brakes on, 69
Craters of moon, 94
Critical epoch in earth's history, 75
Darwin, 12
Darwin, G. H., in Admiralty Manual, 34
Darwin, G. H., on tidal evolution, 97, 118, 122, 151, 185
Day and month equal, 107
Day at present increasing, 68
Day of 1400 hours, 121
Day of 3 or 4 hours, 75
Decline of earth's heat, 90
Diagram showing why moon recedes, 70
Diego Garcia, Krakatoa heard at, 83
Difficulties of tidal evolution, 48
Dives and Lazarus, 161
Dust clouds, 84
Dynamical principle, 65
Dynamical stability, 110
Earth and moon as rigid body, 107
Earth a fly-wheel, 57
Earth, fusion of, 12
Earth, heat of, 80
Earth in highly heated early state, 92
Earth's crust, Lyell on, 12
Earth's history, 12
Earth-moon system originally, 107
Earthquakes, 80
Eccentricity of moon's path explained, 184
Ecliptic, obliquity of, explained, 184
Economic aspects of tides, 45
Egg on end, 108
Elliptic orbit of moon, 113
Endowment of moment of momentum, 167
Energy for tides, whence, 67
Energy lost by tides, 60
Energy of moon's position, 50
Energy of motion, 51
Energy of separation, 50
Energy, sources of, 49
Equality of day and month, 122
Equilibrium, stable and unstable, 108
Equinoxes, precession of, 72
Eruption of volcanoes, 80
Establishment, 30
Estuary, tides in, 152
Explosion of Krakatoa, 83
Extinct season, moon, 129
Fiji, 24
Fishes, periods of fossil, 12
Fitzgerald, Prof., on Hertz' experiments, 101
Floating log, 109
Fortnightly tide, 34
Friction brake, 69
Friction, tidal, 40, 47
Full and change, tides during, 22
Fundy, Bay of, tides in, 39
Gauge for tides, 31
Geological chronology, 146
Geology and tides, 144
Geometric series, 92
Geysers, 85
Gibraltar, Straits of, tides in, 38
Glimpse through the corridors of time, 148
Glorious sunsets from Krakatoa, 85
Greatest length of day, 121
Greatest length of month, 122
Greatest tides, 39
Green moons from Krakatoa dust, 84
Greenock, tides at, 22
Grindstone, rupture of, 76
Gunpowder, energy from, 51
Hall, Prof. A., discovers satellites of Mars, 142
Harmonic analyzer, 35
Heated body, cooling of, 79
Height of tide, how to measure, 29
Helmholtz explains the constant face of the moon, 136
Hertz, undulations of ether, 101
High water, is it under the moon? 21
High water, simple rules for, 26
High water twice a day, 18
Hot springs, 85
Hot waters of Bath, 89
Hour of high water, how found, 26
Howth, 25
Hull, tides at, 23
Ichthyosaurus, 148
Impulse, effect of timed, 101
Incandescence of earth's interior, 85
Incandescence of moon, 94
Indian ocean, 84
Initial condition of earth and moon, 76
Instability, dynamical, 110
Interval, luni-tidal, 30
Iron, machine for punching, 55
Iron smelting, 87
Java, 82
Jupiter, 141, 156
Kepler's Law, 53, 114
Kerguelen Island, 24
Kingstown, 21
Krakatoa, 58
Lagrange, 186
Language, origin of, 12
Laplace, 186
Laurentian rocks, 148
Law of tides, 15
Lazarus and Dives, 161
Leakage of heat, 86
Length of day increasing, 68
Leverrier discovers Neptune, 186
London, tides at, 23, 27
Lunar and solar tides compared, 15
Lunar diurnal tide, 34
Luni-tidal interval, 30
Lyell, 12
Macassar, explosion of Krakatoa heard at, 83
Machine for analyzing tides, 35
Machine for predicting tides, 35
Machine for observing tides, 32
Malahide estuary, 152
Mars, moons of, 142
Mass of moon found from tides, 16
Max Müller, 12
Maximum and minimum, 104
Mediterranean, tides in, 38
Meridian position of moon at high water, 26
Mills, tidal, 43
Mines, heat in, 86
Moment of momentum, how estimated, 170
Month equals day, 122
Month of 1400 hours, 122
Month with greatest number of days, 118
Moon and tides connected, 13
Moon, constant face of, 136
Moon-energy, 54
Moon, volcanic activity on, 94
Moons of Mars, 142
Motion, perpetual, 48
Nautical almanac, 26
Neap tides, 16
Needles, tides at, 23
Niagara, utilization of, 47
Noise from Krakatoa, 83
Numerical data of tidal evolution, 127
Obliquity of ecliptic and tides, 184
Observations of tides, 29
Ocean tides, 38
Orbit of earth, changes in, 72
Orbit of moon explained by tides, 184
Origin of moon, 100
Oscillations of water, 98
Pacific, 84
Paradox of geometric series, 92
Pendulum, motion of, 49
Periodic phenomena, 71
Periods of rotation and revolution of moon equal, 43
Periods of tides, 34
Perpetual motion, 48
Planets and tides, 155
Precession of equinoxes, 72
Prediction of tides, 35
Principal tides, 33
Punching-engine, 55
Purser, Professor, 61
Railway brakes, 68
Reaction and action, 69
Relative rotation, 104
Relative tides on earth and moon, 131
Reptiles, fossil, 11
Retreat of moon explained, 69
Retrospect of moon's history, 77
Rhine, mills on, 43
Ring theory of moon's origin, 96
Rivers, 149
Rocks, formation of, 150
Rodriguez, Krakatoa heard at, 83
Rolling mills, 56
Rotation of moon on its axis, 133
Rupture of earth, 76
Rupture of grindstone, 75
St. Helena, tides at, 38
Santa Cruz, 24
Satellites of Jupiter, 135
Saturn, 141
Seasons, 72
Seas, so called, on moon, 129
Secondary ages, 11
Sligo, tides at, 23
Small tides, 38
Smelting of iron, 87
Solar and lunar tides compared, 15
Solar system, 155
Solar tides, 14
Solar tides, ultimate importance of, 139
Sounds from Krakatoa, 83
Source of tidal energy, 67
Spring tides, 16
Stability, dynamical, 110
Stable equilibrium, 108
Stages of special importance, 117
Stalactites, 73
Steam engine and tides compared, 45
Strata, formation of, aided by tides, 154
Sumatra, 82
Sun, rotation of, 134
Sunbeams stored, 11
Sunda, 82
Sunsets, Krakatoa, 85
Table of luni-tidal corrections, 30
Telescope at Washington, 143
Temperature of space, 91
Tertiary ages, 11
Thames, tides in, 125
Thomson, Sir W., 36, 44
Tidal currents used in making rocks, 153
Tidal efficiency, how estimated, 14
Tidal evolution, to whom due, 97
Tide gauge, 31
Tide mills, 44
Tide predicting engine, 36
Tides and geology, 144
Tides at London bridge, 28
Tides, change and full, 22
Tides, commercial value of, 47
Tides, due to moon, 13
Tides, how to observe, 29
Tides in Jupiter, 138
Tides in moon, 128
Tides, small, 38
Tides, solar and lunar compared, 15
Tides varying inversely as cube of distance, 15
Time and tide, 12
Timor, Krakatoa heard at, 83
Tralee, tides at, 23
Tyndall, 73
Tynemouth, 23
Undulations of a fluid globe, 99
Undulations of air from Krakatoa, 82
Unintermitting phenomena, 71
Unstable equilibrium, 108
Uranus, 142
Vast tides, 39
Volcanoes, 80
Voyage of Krakatoa dust, 84
Washington reflector, 142
Water absent from moon, 129
Water-wheels under London bridge, 43
Waves of air from Krakatoa, 82
Whewell on tides, 30
Work done by tides, 42, 47
Work of tides, 42