Index 



365 



The Figures refer to the sections. 



Hydrosphere, 84, 214-282 

 Hygrometer, 441 

 Hypothesis, 18 



ICE, 69, 336-340 



Ice Age, 351, 352 



Icebergs, 234 



Ice-caps, 340 



Ice deserts, 406 



Igneous rocks, 287 



Impenetrability, 34 



Indian Ocean, 216, 248, 261 



Indian peninsula, 383 



Inductive reasoning, 17 



Indus River, 380 



Inertia, 50 



International Deep, 258 



Inverse squares, 36 



Ireland, 392 



Islands, 262; life on, 416 



Isobars, 192 



Isotherms, 188 



JENOLAN Caves, 317 

 Joints in rocks, 290 

 Jupiter, 127, 130 

 Jura Mountains, 385 

 Jurassic rocks, 349 



KALAHARI desert, 406 

 Karakorum Mountains, 380 

 Kepler's second Law, 109 

 Krakatoa, eruption of, 297 

 Kuen Lun Mountains, 380 

 Kuro Siwo, 247 



LADOGA, Lake, 388 



Lahontan, Lake, 365 



Lake district of Europe, 388 ; of 



North America, 368 

 Lakes, 332-335, 339; circulation 



of water in, 228 

 Lambert's equal-area projection, 



445 



Land and sea breezes, 184 

 Land and sea climates, 191 

 Land and water, 214 



Land sculpture, 305 

 La Plata River System, 362 

 Latent heat, 69 

 Latitude, 92 

 Lava, 294 



Laws of Nature, 14, 20 

 Lena River, 382 

 Life in the world, 394 

 Light, 62, 64 

 Lightning, 173 

 Lignite, 347 



Limit of saturation in rocks, 314 

 Lisbon earthquake, 301 

 Lithosphere, 84, 251 et seq.\ in- 

 terior of, 292 

 Llanos, 360, 406 

 Loam, 311 

 Loess, 308 

 Longitude, 97 

 Low plains, 264 

 Lukuga River, 376 



MAGNETISM, 79 ; terrestrial, 98 

 Malay Archipelago, 407, 414- 



416 



Malayo- Polynesian race, 424 

 Mammoth Cave, 317 

 Man, 418-436 

 Maps, 445 

 Mars, 127, 128 

 Mass, 28 

 Mathematics, 8 

 Matter, 24, 27, 48 

 Mean sphere level, 254 

 Measures, 437 



Mechanical equivalent of heat, 74 

 Mekong River, 380 

 Mercator's projection, 445 

 Mercury (metal), 66, 146, 440 

 Mercury (planet), 127 

 Mer de Glace, 337 

 Meridians, 91 

 Mesozoic rocks, 349 

 Metamorphic rocks, 289 

 Meteorites, 135 

 Meteoritic hypothesis, 144 

 Meteors, 134 



