;68 



The Realm of Nature 



The Figures refer to the sections. 



Snow line, 163 



Sogne Fjord, 339 



Soil, 311 



Solar spectrum, 117; system, 126 



et seq. ; time, in; tides, 114 

 Solstices, 122, 123 

 Sound, 58 



Soundings, deep-sea, 443 

 South America, 357-362, 413 

 South equatorial currents, 243, 



247, 248 



Southern Ocean, 216, 249 

 Southern Uplands of Scotland, 



39 



Species, 396 

 Specific gravity, 29 

 Specific heat, 66, 227, 306 

 Spectrum, 62 ; analysis, 63 ; of 



comets, 133; of stars, 138; of 



Sun, 117 

 Springs, 314, 315 

 Spring tides, 114 

 Stars, 136 et seq. 

 States of matter, 68 

 Steam, 71 

 Steppe-lands, 406 

 Storm-warnings, 213 

 Strain, 35 

 Stratus cloud, 168 

 Stress, 35 



Subjective things, 5 

 Subsidence and elevation of land, 



284 



Summer solstice, 122 

 Sun, 105 et seq. 

 Sunspots, 116 

 Superior, Lake, 333, 369 

 Synclines, 302, 303 

 Synthesis, 40 

 Syr Daria (Jaxartes), 382 



TANGANYIKA, Lake, 376 

 Tarim basin, 381 

 Temperate forests, 408 

 Temperate zones, 125 

 Temperature, 65 ; of air, 187-191 ; 

 of British Islands, 203 ; of 



Earth's crust, 291 ; of lakes, 



228 ; of ocean, 233, 235 ; of 



river entrances, 232 ; of seas, 



236 



Tension, surface, 39 

 Terms, 12 

 Terraces, pink and white, 316 ; 



river, 321 



Terrigenous deposits, 269 

 Tertiary rocks, 350 

 Theory, 18, 19 

 Thermograph, 440 

 Thermometers, 440 

 Thrust-planes, 302 

 Thunder, 173 

 Tian Shan Mountains, 381 

 Tibet Plateau, 380 

 Tibeto-Chinese race, 424 

 Tides, 103, 114; in bays, etc., 



219 ; currents, 218 ; oceanic, 



217 



Time, 95, 96, in 

 Tornado, 209 

 Torrens, Lake, 372 

 Torrents, 320 

 Torrid zone, 125 

 Trade winds, 179 

 Transitional area, 255, 263 

 Trias rocks, 349 

 Trigonometry, 33 

 Tropical, group of plants, 405 ; 



forests, 407 

 Tropics, 122 

 Tsad basin, 377 

 Tuff, volcanic, 295 

 Tundras, 406 

 Tunnels, transalpine, 432 

 Tuscarora Deep, 260 

 Typhoons, 208 



UNCONFORMABILITY, 342 

 Underground water, 313 ; tern 



perature, 291 

 Ural Mountains, 384 

 Uranus, 127, 131 



VALLEYS, 321, 327, 328 



