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 Mueller, 12
Maximum and minimum, 104
Mediterranean, tides in, 38
Meridia