INDEX. 



Sidelong ground, railway sections in, Clark's, 67 

 Sieinen's pat. steam-engines, 249 

 Signal balls, Adies, 02 

 Sims's new hydraulic wheel, 351 

 Silver and lead, Johnson's pat. for refining, 143 

 „ extraction from its ores by the " wet way," 



315 

 „ nitrate of, colouring paper-haogings with, 

 100 

 Silvering speculums, Fletcher's pat., 115 

 Skerry vore lighthouse, account of, 173, 205 

 Skew bridge, Grainger's, 02 

 Slag, occurrence of vanadium in, 319 

 Slate traffic on railways, 333 

 Sleepers, preservation of wood for, 224 

 Slide valve on the lap and lead, 14. 37 

 Slocum's American plough, 31 

 Smelting copper ores, Birkmyre's pat., 215 

 „ furnace, cost of, 340 



,, Norwegian method, 320 



„ Rivot and Phillips's process, 



347 

 Smith, Dr., on air and water of towns, 311 

 „ observations on mints, 315 



„ on government loans to railways, 127 



„ on high-pressure boilers, 283 



Smoke consuming, Kyan's pat., 113 

 Snell, on stability of arches, 132 

 Soap plant, 255 



Society of Arts, London, 29, 61, 90, 156, 380 

 „ exhibition, 101 



„ Scottish, 31, 02, 91, 125. 148, 



153, 184 

 Society for the publication of. Architectural know- 

 ledge, 137 

 Solomon's pat. artificial fuel, 52 

 Solvent power of chloroform, 1S8 

 Somerset-house, 257 

 Somersetshire, geology of, 313 

 Sound made visible, 128 

 South-Eastern railway, 318 

 South-foreland lighthouses, 319 

 Spain, opening of first railway in, 352 

 Sparke's plate-holder for the daguerrotype ca- 

 mera, 155 

 Speculums, Fletcher's pat. for silvering, 115 

 Spheroidal state of water, application of to steam- 

 Springs, Poole's pat. pneumatic, 45 

 Stability of arches, by G. Snell, 132 

 Stability of floating bodies, 357 

 Stanley, Captain, on height of waves, 310 

 Slaite's pat. lighting by electricity, 49 

 Starting apparatus, Jackson's hydraulic, 183 

 Statistics of railways, 241, 268, 333, 366 

 Steam-boilers and engines, Exall's pat,, 342 

 „ Black's pat. 304 



„ furnaces. Baker's pat., 247 



„ Douche's pat., 303 



,, tubes. Cutler's pat., 248 



„ marine, Dundonald's pat., 286 



Steam-carriages, collision of, 197, 292 

 „ condenser, Schiele's pat., 114 

 „ drainage of marshes by, 301 

 Steam-engines, Bacon and Dixon'spat., Ill 



„ boilers, supply of water to, 179 



„ causes of explosions in (rev.), 178 



„ Cole's pat. high pressure, 342 



„ governors, 255 



,, high pressure, Alban (rev.), 211 



„ Regnault's theory, 236, 265, 338 



„ rotary, Davies's pat., 



370 

 „ rotary, Wilson's, 286 



„ Samuel's, 223 



„ Siemen's pat., 249 



„ studies of, Templeton (rev.), 296 



,, treatises on, 172 



„ Wicksteed's, 104 



Steam for carbonising wood, 320 



„ generator, high pressure, Leon's, 360 

 „ hammer, Nasmyth's, 289 

 „ navigation defences, 43 

 „ Scott ussell on, 311 

 navy, 75 



Steam-engine, application of water in spheroidal 



slate, 382 

 Steam or hydraalic-wheel, Sims's, 2.51 

 Steam pile-driver, Clarke and Varley's 341 ; 



Nasmyth's, 289 

 Steam-power, auxiliary, 126 

 Steam-power of France, 352 

 Steam-power to mills, Hastie's pat., 115 

 Steam propulsion in the year 1543, 319 

 Steam-ship Ajfonso, 317 ; Express, 319 ; 



Llcwfllyn, 190; New Star, 319 i Ta>nan,36G 

 Steam-ship, Great Britain, sale of, 320 

 Steam-valves, expansive, improved mode of work- 

 ing, 141 

 Steam working expansively, 158 

 Steel, chemical character of, 314 

 Steel tyres, Banks's pat., 184 

 Steering vessels, Kenwood's pat., 47 

 St. George's cathedral, 290 

 Stephenson, George, life of, 297, 329, 361 

 Stevenson's account of the Skerryvore lighthouse 



(rev.), 173, 205 

 Stevenson's portable cofferdam, 02, 231 

 Stone, artificial, Ransome on, 61, 90 

 Stone, caen. Prof. Donaldson on, 94 

 Stone drilling machine, 160 

 Stone traffic on railways, 271 

 Strength of Hungerford-bridge, on the, 364 

 Strength of materials, Buchanan on, 125, 153 

 Slruve's low-pressure Atmospheric railway, 284 

 Study of mechanic, 323 

 Stowe, 258 



Stow's pat. propelling-blade, 286 

 Submarine foundations, Mitchell on, 122 

 Sudden draining of the Niagara river, 191 

 Sulphate of iron for purifying gas, 128 

 Sunderland docks, 2SS 



Supply of water from new red sandstone, 188, 381 

 Surveying, a treatise on, by A. M'hitehead (rev.), 



140 

 Surveyors, civil and military, 96, 198, 255 

 Surveyors preceptor, by J. Reid (rev.), 1^ 

 Survey of London, Ordnance, 96, 198, 255 

 Survey of Liverpool, 278 

 Suspension bridge, Clifton, 318 ; Hungerford, 3, 



292, 364 ; near the falls of Niagara, 191, 288 ; 



overarch, Milne's, 32 

 Suspension bridges, on their most economical 



form, 2 

 Switches, NicoU's improved, 32 

 Symmetrical beauty, Hay on, 31 



„ Purdie on the fallacy of, 148 



Taderxacle of Israel, 95 



Tables for calculation of earthworks, Cox's, 199 



,, Baker's (rev.), 74 



Tables for earthworks, Sibley and Rutherford's 



(rev.), 27 

 Tate's principles of geometry (rev.), 138 

 Tattersall's railway communicator, 191 

 Taylor, on the dyer's tinctoria, 31 

 Taylor's pat. engines and breaks, 76 



„ railway carriages, 23 



Teeth of wheels, machine for forming, 182 

 Telegraph and alarum for railways, 30 

 „ dotting electric, 256 

 „ electric, 9, 217 



„ electric, company, 96 

 ,, copying, 191, 317 



„ employed by publicans, 127 



(rev.), 176 

 „ profits, 224 



Temperatures, Regnault on measurement of, 338 

 Templeton's studies of the steam-engine (rev.), 



296 

 Testing gun metal, 381 



Theatres and porticoes of Ancient Rome, 233 

 Theatre, new,. Royal Polytechnic Institution, 96, 



159 

 Thermometer, gas, Regnault on, 339 

 Theorem to find the area of cross section of rail- 

 way on sidelong ground, 137 

 Theoretical and practical mechanics, Hann's 

 (rev.), 375 



Theory and practice of ship building, (rev.), 120 

 Theory of steam-engines, Regnault's, 236, 265, 



338 

 Thornton's hydraulic lifting-jack, 87, 217 

 Thorold's pat. turntables, 303 

 Tides of the English and Irish channels, 147 

 Tile and brick traffic on railways, 333 

 Tilghman,on the decomposing power of water.lSl 

 Timber duties, 160 

 Timber traffic on railways, 270 

 Timber viaducts, by J- and B. Green, 33 

 Time signals, 256 

 Tin traffic on railways, 270 

 Torrents, dissertation on, by Guglielmini, 59 

 Torrop's time signals, 256 

 Towns, air and water of, by Dr. Smith, 311 



„ bill of health, 120 



„ health of, 17, 39 



„ regulation of buildings in (rev.), 27, 55 



„ ventilation of, 188 

 Trains, collision of, 196, 292 

 Treatise on practical surveying, by A. Whitehead 



(rev.), 140 

 Treatises on the steam-engine, 172 

 Trenches for drain tiles, White's pat., 320 

 Trigonometrical formula;, 230 

 Triple railway-break, 192 

 Tube-cocks, india-rubber, Jennings's pat,, 144 

 Tubes, lap-welded, Cutler's pat., 248 



„ manufacture of Fontainraoreau's pat., 21S 

 Tubular bowstring bridges, 1,300 



„ bridge at Conway, 95, 126, 154, 161, 351 



,, bridges, disputed invention of, 218 



„ flues, Pott's pat., 368 

 Tunnel across the channel, 218 

 Turnbull's essay on air-pump and atmospheric rail- 

 way, (rev.), 26 

 Turnbull on Middlesbro' docks, 105 

 Turn-table, Thorold's pat., 303 ; Tnriflt's, 288 

 Tuthill's history of architecture (rev.), 377 

 Tyres, steel, Banks's pat, 184 



Unio» and division of running waters, by B. Zen 

 drini, 115 



Uniting metals and metallic alloys, processes for, 

 187 



Valve, slide on the lap and lead, 14, 37 



Valves and plugs, Bateman's pat., 286 



Valves, atmospheric, Froude's pat., 218 



Valves, expansive, Improved mode of working, 



141,285 



„ self-acting safety, Walmsley's pat., 371 

 Vanadium in the refinery slag of, Staffordshire, 319 

 Vases, ancient greek. Dr. Harding on, 90, 91 

 Vegetable wax, 352 

 Velocity of atmospheric jets, 110 

 Velocity of waves, by Capt. Stanley, 310 

 Ventilation, lighting, and heating, Brittern's pat,, 



370 

 Ventilation of mines, Wilcock's pat., 22 

 Ventilation of towns, 188 

 Ventilometer, the, 127 



Viaducts, arched timber, by J. and B. Green, 33 

 Viaducts, Dinting vale, by A. S. Jee, 35 

 Viaducts across the Dee, 317 

 Vibrating piston-rod engine, Gustafsson's, 24 

 Vibration or deflection gauge, 

 Vice, Peck and Pardee's pat. lever, 373 

 Vickers's pat., manufacture of iron, 47 



Wales, South, geology of, 313 



„ „ qualities of coal in, 313 



„ submergence, and re-appearance of ancient 

 land in, 314 



Wallace's improvements in decoration, 303 



Waller's pat. coffee-pot, 115 



Walls and embankments for waterworks, 197 



Wall's pat. for separating iron from ore, 144 



Walmsley's pat. self-acting safety-valve, 371 



War steamer Affonso, 317 



Water and air of towns. Dr. Smith on, 31 

 „ cisterns, stop cock for, 185 



