Ice in Scandinavia, Scotland, Germany, 74, 270 Iceland, Eruptions in, 106; Earthquakes in, 141, 154 _Ichthyornis_, The, 250 _Ichthyosaurs_, The, 234, 239 Igneous rocks, 104 _Iguanodon_, The, 245 _Inostransevia_, The, 233 Insect life in the Ordovician Period, 206; in the Devonian Period, 216 "Inter-glacial epochs," 273 Interior of the Earth, Theories concerning the, 87 Isle of Wight, Encroachment of the sea in, 17 Jamaica, Earthquake in, 157 Japan, Earthquake in, 141, 153 Jupiter, 91; as an abode of life, 119 Jupiter Serapis, The Temple of, 181 Jurassic Period, Reptiles of the, 237 Kelvin, Lord, Theory of, 87; concerning Life, 113 Kern, River, Effect of earthquake on, 141 Kingston, Jamaica, Earthquake at, 176 Kipling, Rudyard, 62 _Kiwi_, The, 252 Krakatoa, The eruption of, 45 Lago di Tolfilo, 152 Lakes, Deposits in, 56 Lakes produced by earthquakes, 152, 159 Land and Water, The distribution of, 31 _Lariosaurus_, The, 234 Laurentian Rocks, 133, 201 Lava eruptions, 105; in N. America, 106; plains, 107 Layers of strata which show the history of a place, 37 Leakage of the sea bottom, 190 Leonids, Lyrids, or Perseids, 99 Lias formation, The, 235, 237 Life, The simplest forms of, 111; theories concerning its origin, 113; early forms, 114; in the Cambrian Period, 202; in the Silurian Period, 203; in the Ordovician Period, 204 Lisbon, Earthquake at, 148 Llama, The, 273 London, What excavations have revealed concerning the site of, 35 Luray, Caverns of, 196 _Lycopods_, 222 _Lyginodendrons_, 223 Mammals, The development of, 234, 258 Mammoth, The, 279 Mammoth Cave of Kentucky, 196 Man, 284 Marble, how it is produced, 133 Marl in lakes, 57 Mars, 91; as an abode of life, 119; atmosphere, 126 Marsupials, 237 Martinique, Devastation of, by volcano, 186 _Mastodon_, The, 260 _Megatherium_, The, 275 Mercury as an abode of life, 118 _Meritherium_, The, 261 Mesozoic Period, The, 199, 231 Metals may be converted into gases, 84 Meteorites, 96 Microbes and Bacteria, 111 _Microlestes_, 237 Migrations of the human race, 290 Miller, Hugh, 213 Millstone Grit, 218 Miocene Period, The, 257 Mississippi, The Delta of the, 20; sediment deposited, 51; earthquake in region of, 159 _Moa_, The, 252, 260 Monsoons, 42 Moon, The, 90; its birth, 100, 120; volcanoes in, 106; as an abode of life, 119; weight, 120; temperature, 124 Moraines, 70 Moraine-stuff, 70 Mountain formation, 167 Mud-banks, how they are made, 19 Mussels, 210 _Mylodon_, The, 276 Myths concerning earthquakes, 177