Health of towns, Dr. Smith od, 311 



Health of towns, the government and the pro- 

 fession, 17 



Heath's pat. railway-break, 304 



Heating, lighting, and ventilating, Briltern's pat., 

 370 



Heatou's pat. locomotive-engines, 189 



Height of waves, Captain Stanley oo, 310 



HenwooU's pat. for steering vessels, 47 



Hepburn, on the prevention of accidents on rail- 

 ways, 31 



Hepburn's railway-break, 32 



Heppell, on resistance to bodies in fluids, 106 



High-pressure boilers, Smith on, 283 



High-pressure steam for carbonising wood, 320 

 „ generator. Lean's, 360 



High-pressure and expansive engines. Cole's pat., 

 342 



Hints to planters, 03 



History of architecture, letters on Mr. Elnies's, 

 8, 58, 65 



Hoare's railway telegraph and alarum, 30 



Holfnian, on the composition of coal gas, 157 



Holmes's electric telegraph, 224 



Holyhead steam-packet, Ueii-elbjn, 190 



Homersham, ou tlie fall of rain, 349 



Homersham, on supply of v.ater to Manchester, 

 6>:c., (rev.), 177 



Horse traffic on railways, 367 



Hosking's guide to the regulation of buildings in 

 towns (rev,), 27, 55 



Hotel de V'ilie, Paris (rev.), 99 



Houses of parliament, 245, 278, 295 



Houses of parliament, expenses of, 92, 228 



Howard, on plate-glass trade, 316 { 



Humphrey's pat. screwpropellers and pumps, 247 



Huagerford suspension bridge, 3, 292, 364 



Hunt's pat. gas-burners, 114 



Hunt, on tiie electricity of mineral veins, 189 



Hydraulic lifting jack, Thornton's, 87, 217 



Hydraulic pressure engines, 314 



Hydraulic starling apparatus, 183 



Hydraulic telegraph 127 



Hydraulic or steam-wheel, .Sims's, 351 



Hydrograpliic map of the Brititli Isles, 315 



Hydrogen gas as a motive power, 379 



Hydrometer, marine, Buchanan's, 91 



l'ANSON,on mural paintings in Lingfield church, 29 

 I'ausuu, ou building sewers, 29 

 Ice, comparative value of, 352 

 Illumination of lighthouses, 173, 205 

 Illuminating power of gas, mode of estimating, 



184 

 Imperial insurance-office, Old Broad-street, 193 

 Import and export of metals, IBS 

 Improvements in bridge building, 318 

 Improvenieols of inland navigation, 53 

 Improvement of steam navigation, 311 

 Indian railways (rev.), 103 

 India-rubber tube-cocks, Jennings's pat., 144 

 India-rubber joints, Brockedon's pat., 380 

 Indian waterfall, 319 

 Indurated gypsum, 288 

 Inland navigation, by A. P. Perceval, 53 

 Inlaying metals, iNIotay's pat.. 217 

 Institute of British architects, 29, CO, 89, 



150, 186,221,283, 380 

 Institution of builders foremen, 90, 

 Institution of civil engineers, 01, 90, 122, 



185,221,283 

 Institution of civil engineers of Ireland, 63 

 Instilulioa of engineers at the Hague, 127 

 Institution, Royal Polytechnic, 96, 159 

 Institution of mechanical engineers, 87, 182, 222 



283,380 

 Invention of tubular bridges disputed, 218 

 Inverted arch bridge, Cowper's, S 

 Invisible musicians, 192 



Irish and English channels, on the tides of, 147 • 

 Irish wants and remedies (rev.), 214 

 Irisli flax, Bennett on, 31 

 Ireland, institution of civil engineers of, 63 

 Ireland, railwaja in (rev.), 214 

 Iron, manufacture of, Attwood's pat., 371 



124, 



155, 



INDEX, 



Iron, Manufacture of, Blewitt's pat., 46; New- 

 ton's, 170; Russell's, 286; Vickers, 47 

 Iron bridges, Buchanan on, 125, 153 

 Iron lever bridge, Gladstone's, 380 

 Iron, Norton's machine for rolling, 191 

 Iron ore in Algiers, 191 

 Iron produce of I'ennsylvania, 284 

 Iron, Rocke's pat. for casting, 210 

 Iron, sulphate of, for purifying gas, 128 

 Iron skew bridge. Grainger's, 02 

 Iron, the elfects of zinc on, 187 

 Iron tubes, Cutler's pat., 248 

 Iron tubular bowstring bridges, 1,200 

 Iron traffic on railways, 270 

 Iron truss railway bridge. Rider's, 30 

 Iron vessels, construction of, 225 

 Isometrical perspective, 230, 294 



.Jack, Thornton's hydraulic, 87, 217 



Jackson ou engineering of the Rhine and Moselle, 



150 

 Jackson's hydraulic starting apparatus, 183 

 Jacquard perforating machine, 88, 225 

 Jee's Dinting Vale viaduct, 35 

 Jenuing's pat, india-rubber tube-cocks, 144 

 Joues's friction hammer, 128 

 Johnson's pat. fur refining silver and lead, 143 

 Junius's letters, authorship of (rev.), 213 



Kay, IMr., death of, 61 



Kemp, on economising fuel in gas-works, 155 



Kendall's designs for schools and school-houses, 



57 

 Keys, railway. Barlow's pat., 304 

 Kiln, porcelain, Newton's pat., 145 

 Kimberley's pat. jointing clamp, 373 

 Kinsman's pat. rotary-engines, 216 

 Kyan's pat. for consuming smoke, 113 



Lace, Brussels, 32 



Lakes of America, 319 



Lautliorn, new mining, 255 



Lap and lead of the slide-valve, 14, 37 



Launch of tlie Express, 319; New Star, 319; 



Llewelhjn, 193 ; Taman, 366 

 Law's mathemotics for practical men (rev.), 209, 



219 

 Lii\ard"s rem.TiUs on Nii;cveh, 60 

 Lead and silver, Johnson's pat. for refining, 143 

 Leather hangings, Foynter on, 61 

 Lecture, I'layfair's iiiiroductory, 376 

 Lectures on geology, by Prof. Ansted, 27 

 Lectures on civil engineering,\V. Ranger (rev.), 378 

 Leon's high-pressure steam generator, 360 

 Letters of Junius, authorship of (rev.), 213 

 Lifting-jack, Thornton's hydraulic, 87, 217 

 Light, effects of, in photography, 284 



,, engines and trains, 223 

 Lighthouse on tlie Skerryvore rock (rev.), 173, 



205 

 Lighthouses at the South Foreland, 319 



„ Findlay on, 01 

 Lighting, heating, and ventilating, Brittern's pat., 



370 

 Lighting by electricity, Staite's pat., 49 

 Lime, traffic ou railways, 270 

 Linglield church, mural paintings in, 29 

 Lists of new patents, 32, 64, 96, 128, 160, 192, 



224, 256, 288, 320, 352, 382 

 Lister's railway breaks, 304 

 Little and Brett's railway communicator, 30 

 Liverpool, supply of water from the new red 



sandstone, 188 



„ survey, 278 

 „ waterworks, 127 

 Lockhead's pat. for perforating glass, 307 

 Locomotive carriage apparatus, Wrighton's pat., 



246 



„ wheels, Evans's pat., 189 



Locomotive-engines and breaks, Taylor's pat., 70 

 „ carriages, Taylor's pat., 



23 ; Pearson's, 167 

 Locomotive-engines, Crampton's pat., 48; Hea- 



ton's, 189; Ritchie's, 306 

 Locomotive propelled by manual labour, 192 



Locomotivee, branch passenger, 382 



London and North-Western railway carrying 



stock, 307 

 London, ordnance survey, 90, 198, 255 

 „ society of arts, 29, 61, 90, 150 

 Lovelace, Earl, on harbours of refuge, 222 

 Lowe's pat., manufacture of ores, 214 

 Low-pressure atmospheric railway, 284 

 Lubricant, new, for machinery, 155 

 Lubricating composition, Denne's pat., 169 

 Lush's notes upon art, 356 



Lyell, ou fossil footmarks in the coal formation, 86 

 Llandafl' cathedral, Wyatt on, 141 

 Lkweltyn steam-packel, 190 

 Lloyd's pat. furnace and blowing-machine, 343 



M'Coll's railway alarum, 32 

 M'Connell,on balancing of wheels, 222 

 Machine for rolling iron, Norton's, 191 



„ for quarrying, 100 

 Machinery, Blackwall railway, 83 

 ,, new lubricant for, 155 



Madder, colouring property of, 284 

 Mail conveyance on railways, 33S 

 Malleable iron railway chair, Robb's, 31 

 Malleable iron lever bridge, Gladstone's, 380 

 Mammoth machine, 192 



Manchester, &c., supply of water to (rev.), 177 

 „ and Sheffield railway, goods traffic on, 

 307 

 Manual power locomotive, 192 

 Manure traffic on railways, 330 

 Map, bydrographic, of the British isles, 315 

 Maps of the ordnance survey, 287 

 Marble arch at Buckingham palace, 7 

 Marine engines and propellers, Maudsley's pat., 

 305 

 ,, hydrometer, Buchanan's, 91 

 ,, steam-boilers, Dundonald's pat., 286 

 Market-house at Blackburn, 96 

 Marshes, drainage of, by steam, 301 

 Mathematics for practical men, Gregory's (rev.) 



209, 249 

 Maudsley's pat. engines and propellers, 305 

 Measurement of temperatures, 338 

 Mechanical engineers, institution of, 87, 182, 222, 



283 

 Mechanics, study of, 323 



„ theoretical and practical, Hann's (rev.), 

 375 

 Mechanism, new element of, 315 

 Medals of R. I. B. A., award of, 124, 125 

 Mercury, density of, 207 

 Metals bronzed by electricity, 127 

 „ import and export of, 198 

 „ Motay's pat. for inlaying, 217 

 ,, process for uniting, 187 

 „ Salzede's pat. for bronzing, 169 

 Metropolitan sanitary commission, 17 



„ sewers act, 287 



Micbaut's pat. for manufacture of coke, 246 

 Middlesbro' docks and coal drops, 105 

 Mill, removal of, near Coleraine, 63 

 Miller, on analysis of wrougbt-iron, 

 Mills, application of steam-power, Hastie's pat., 



115 

 Military surveyors and civil surveyors, 198, 255 

 Milne's overarch suspension bridge, 32 

 Mineral guano, 285 



„ produce of Austria, 190 



„ traffic on railways, 334 



„ veins, electricity of, 189 



Mines, ventilation of, Wilcock's pat., 22 



Mining apparatus, Puis's pat., 248 - 



„ lanthorn, new, 255 

 Mints, observations on, by Mr. Smith, 315 

 Miscellaneous goods trafiic on railways, 366 

 Mitchell's safety-wheel ring-revolver, 63 

 ,, screw-pile and moorings, 122 

 Mode of extinguishing fire at sea, 318 

 MoflTat's railway alarum, 32 



„ pat., improvements in sewers, 372 

 Monumental brasses, Archer on, 30 

 Moselle and the Rhine, engineering of, 155 

 Motay's pat. for inlaying me'.als, 217 



