Stars: new study, 3; location, 4; size, 4, 230; seen in darkness, 35; self-shining suns, 35, 118; host, 117; variety, 118; five, 118; elements, atmosphere, 179; showers (see _Meteors_), 195; seen through comet, 212, 215; chapter, 221–250; analysis, children, 222; distances, 223; intervals, 224, 227, 229; colors (_q. v._), glory, 227; new, fading, 230; double, 233; relation to man (_q. v._), 233; fixed, 233; changing place, 234; mass, 237; ages, 238; photographed, 244, 247; chart, 247; death, 248. (See _Falling_, _Planets_, _Shooting_.) Steam, 74, 75. Steamers, 21, 73, 115. Steel, melted, 104–108. (See _Iron_.) Stellar Spectra (_q. v._), 222, 236, 237, 244, 245. Stevenson, George, 111. Stewart’s Observations, 88. Stonehenge, 1–3. Stones: from heaven, 175, 176, 186, 187, 191, 193; Iowa, 199, 200. (See _Meteorites_.) Stonyhurst Records, 88. Sumbawa Observations, 181. Sunbeams: lifting power, 72; Laputa, 73; printing, 74; motes, 215. (See _Light_.) Sun: practical observations in Washington, 2, 3; new study, 3; surroundings, 4, 35–69; distance, 4–6; size, 5, 6; a private, 6; views, 6–12, 15, 16, 20; details, 7; fire, 8, 91, 92; telescopic view, 8; axis, 9; revolutions, 10; surface, 17; paper record, 18; heat (_q. v._) and eye, 19; drawings exaggerated, 29, 30; something brighter, 32; atmosphere, 33, 34; slits, 59; miniature, 64; flames (_q. v._), 69; energy, 70–116 (see _Heat_); versatile aid, 74; children, 75, 222; shrinkage, 99; ground up, 100; emissive power, 104; constitution and appearance, 111; god, 116; self-shining, 118; studied from mountains, 167; affected by dust (_q. v._), 185; and comet, 216; elements, 233; a star, 237; life, 238; candle, 249; anecdote, 250. (See _Solar_.) Sunrise, 234. Sunset, 181, 182. (See _Twilight_.) Suns: millions, 224; dwindling, 227; periods, 241. Sun-spots, 1–34 _passim_; ancient, 8; early observations, 8; changing, 9; great, 10, 20, 24; individuality, darker, 11; leaves (_q. v._), 11, 12; how observed, 18, 19; typical, 21, 22; relative size, 20; hook-shaped (see _Plume_), 24; signs of chaos, 27; double, 32; weather, 76, 90; periodicity, 76–78; temperature, 83; records, 85; variations, 87; (1870), 9, 15, 16, 20; (1873), 20–24; (1875), 25, 28, 30; (1876), 30, 32; (1882), 80, 83–86, 90. Superga, 38. Swift, Dean, 73, 131, 132. (See _Gulliver_.) Sword Meteor (_q. v._), 175. Tacchini’s Investigations, 43, 49, 62, 66, 68. Tail, 215, 216. (See _Comets_.) Tan, 71. Taylor, Bayard, 139. Telephone, 84, 89.