GENERAL INDEX. 



39T 



PAGE. 



Quartz crusher and amalgamator, 



Gardner's, 82 



" crusher and amalgamator, 



Berden's, 83 



Quinine, adulteration of, 250 



Radiation of luminous bodies, 151 



Radiations, solar, chemical action of, 177 



" influence of upon 



vegetation, 178 



Railroads of the United States and 



other countries, 65 



Railroad improvements, 65 



track-supporter, 66 



Railway baggage, new way of check- 

 ing, 67 

 Raker, Atkin's automaton, 

 Ransome's artificial stone, 107 

 Rare shell, 346 

 Rattlesnake, notes on, 349 

 Red river, 293 

 REDFIELD, W. C., 200 

 Reflecting telescopes, improvements 



in, 171 



Refrangibility of light, on the change 



of, 173 



Reverberating furnace, new, 108 



Revolver. Gibbs 1 patent, 90 



Richardsba's atmospheric telegraph, 79 

 Rifle. Porter's patent, 

 Road-scraper, Arnott's, 37 



Rocks, chemical changes in, 246 



ROGERS, PROF. 292 



Root-washer, Archimedes, 36 



Safety-rein, duplex, 



Salt, a poison to plants, 284 



Scales, improvements in, 

 Search, Arctic, 376 



Sewing machines, improvements in, 99 

 Shell, rare, 346 



Ships, speed of clipper, 222 



Ships, Foreman's process for raising, 72 

 and steamers, improvements in, 52 

 Ship Great Republic, 53 



u building, new mode of, 55 



Shoddy, 74 



Shooting stars of August 10, 1853, 361 

 Silk, singular discovery in the pro- 

 duction of, 348 

 Sled-lock, Dixon's, 46 

 SMITH, DR. J. LAWRENCE, 272 

 Smoke-consumiug furnace, 80 

 nuisance in London, abolition 



of, 81 



Smokeless chimneys, 

 Soda, nitrate of, as a fertilizer. 

 Solar phenomena, 367 



" spots, meteorological influence 



of, 370 



" radiations, influence of upon 



vegetation, 178 



" radiation, chemical action of, 177 



" spectrum, longitudinal lines of, 158 



Soundings, deep-sea, errors in, 309 



>' " 311 



Spade, rotary. Gibbs', 36 



Springs, rising of water in, before 



rain, 373 



Spring-balance for time-keepers, new, 118 



PAGE. 



Starch, manufacture of, 247 



Static-regulator, Clark's, 46 



Steamer, novel, 52, 56 



Steel, burnt, regeneration of, 234 



Stereoscopic combination of colors, 161 

 Stereotype moulds, new process of 



taking, 102 



Stone. Ransome's artificial, 107 



Stones, machine for picking up, 32 



Stone-dressing machine, Eastman's, 46 



StraAV-cutter, Daniel's, 39 



Parker's, 39 



Seeley's improved, 38 



St. Domingo, tertiary formations of, 291 



Strength and density of building 



stone, 317 



Structure of plants and animals, 



identity of, 342 



Sugar, action of, upon iron, 239 



Sun, observations on, 364 



Syphon, drainage by means of, 222 



Lover's improved, 72 



Tables, Faraday on the motion of, 132 

 Talbot, engraving from daguerreo- 

 types, 189 

 Telegraph and electricity, application 



of, to military purposes, 123 



Telescopes, reflecting, improvements 



in, 171 



Terrestrial magnetism, 131 



Thermometers, standard graduation 

 of, 201 



elastic scales for, 203 

 Thermostat for regulating tempera- 

 ture, &c., 204 

 Thimble machine, 111 

 Threshing machine, Zimmerman's, 33 

 Palmer's, 34 

 " Snyder's, 34 

 Tides of the western coast of the 



United States, 384 



Tiles, encaustic, 106 



Time-balls, construction of, 221 



Tin, removal of, from copper vessels, 234 

 Tobacco-pressing machine, 78 



consumption of, 340 



Trip-hammer, improved, 109 



Tunnel-excavator, Talbot's, new, 104 

 Tunnelling machine, improved, ]05 



Turbine wheels, improvements in, 118 

 Twinkling, Arago on, 152 



Umbrellas and parasols, manufac- 

 ture of, in New York, 79 

 Urea, new test for, 265 

 Vacuum sugar pans, 89 

 " method of obtaining a per- 

 fect, 211 

 Vapor, saturated, density of, 204 

 engine, Du Trembley's, 60 

 Vaults and cess-pools, machine for 



cleaning, 77 



Vegetable ivory, 237 



Velocities, determination of, 218 



Vermont, gold in, 324 



Vessels, improvement in caulking, 57 

 Vivarium, marine, 344 



Volcanoes, lunar, 368 



Washing, new mixture used for, 248 



