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 Yarmouth, tides at, 23 THE END. _Richard Clay & Sons, Limited, London & Bungay._