iNDEX, 



511 



Sight, its dependence on the optic nerves, 

 • 492 



Silk-worms, disease of, 231 

 Sinacam. 324 

 Sioux Indians, 330 

 Six Nations, Indians of the, 361, 368 

 Skeletons, gigantic, 325, 369 

 Skulls, shape of, 149 

 "Sleep, influence of, 308 

 Soda, silicate of, 371 

 Soils, quality of different, 294 

 Solanic acid, on, 227 

 Solar and lunar compasses, 471 

 Solly, Mr,, on the anatomy of birds, 174 

 Soublette, General, 382 

 Sound, its velocity in water, 480 



resonance or reciprocation of, 173. 



417 



musical, lecture on, 424 



Sounds, velocity of, 216 



distances at which they are heard, 



217 



effect of wind upon, 217 



Southwark water-works, 409 



Spain, population of, 95 



Spasmodic disorders, on, 46 . 



Specula of reflecting telescopes, on, 255 



Spencer, Earl, 430 



Spinetto. Marquis, lectures by, 440 



Sportsman, case of a fat one, 272 



Springs in Teneriff'e, temperature of, 129 



petrifying, 367 



Spru(Jpl, mineral properties of the, 70, 73 

 Stammering, cure of, 498 

 Stanhope, Lord, his improved printing- 

 press, 183 

 Stars, on the heliacal risings of the, 442 



fixed, lunar occultations of the, 215 



468 



Statistics, an important branch of know- 

 ledge, 88 

 Steam, experiments on, 481 

 Steel, hardening of, 470 

 Stomach, complaints of the, 19, 158 

 Stiahlenberg's History of Siberia, 327 

 Struve, Dr., on mineral waters, 64, 66, 71 

 Sulphate of soda, crystals of, 223 

 Sulphuric acid, habitudes of, 224 



— solubility of substances in 



Telescopes, reflecting, annealing of the 



specula of, 255 

 Tenerifl'e, temperature of springs and 



fountains in, 129 

 Thames, river, water supplied by the, 410 

 tunnel, present »ta(e of, 436 



477 



ether, formation of, 228 



Swainson, Wm., Esq., his description of a 



new group of shells, 81 

 Sweet oil of wine, 229 

 S win ton, Mr., particulars respecting, 299 

 Sydenham, Dr., 164 



Taensas, village of the, 328 

 Tartary, comparative history of, 356 

 Tecum Umam, anindian chief; 326 



Thenard,M., 262,263,265 

 Theory, observations on, 399 

 Thermometer of contact, 472 

 Thompson, Dr., on natural objects, 393 

 Thorold's reel, model of, 173 

 Tiahuanaca, ruins of, 365 

 Tic douloureux, observations on, 36,49 

 Time-keepers, escapements for, 418 

 Timougin, particulars respecting, 357, 



358,359 

 Timur Khan, particulars respecting, 369 

 Tippoo Saib, 275 

 Toltecs, account of the, 142, 146, 148,323, 



354,356,365 

 Tooth-ache, on the, 37, 57 

 Transpiration, phenomena of, 308 

 Tula, river, 356 



Tumuli or mounds, numerous, 353 

 Turks, conquests by, 148,356 

 Turner's history of remarkable providences, 



284 

 Turrel, Mr., new instrument by, 174 

 his account of chemical men- 



struums, 417 



Ultramarine, artificial, 226 



United States of America, inland naviga- 

 tion of, 1 



Upcott, Mr., his collection of autographs, 

 434 



Urea, artificial formation of, 491 



Ursae Majoris, a double star, 239, 240, 

 244,250,251 



Utatlan, city of, in Guatemala, 324 



Vauxhall water-works, 409 

 Vision, inverted, singular case of, 469 

 Volcanic products, floating, 234 

 Voltaic battery, tension of the poles of, 222 

 Vomiting, on the act of, 388 

 Von Buch, M., on the climate of the Ca- 

 nary Islands, 123 

 Votan, leader of the Guatemalans, 146 



Wadd, Wm., Esq., his comments on cor- 

 pulency, 16, 268 



Walcker, A., on mineralgpaters, 62 



on experimental chemistry, 



371 



VVardrop, Mr., 60 



Water, its relation to hot polished sub- 

 stances, 221 



spout, account of a, 503 



■ supply of, in the metropolis, 405 



