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Fire-engines, on the inefficiency of present,
411, 435

floating, 391, 411, 436
Fire-engine branch-pipe, Merryweather's, 35
Fire-escape, Merryweather's, 67

Ford's, 129
Fire-place, improved, 45

for burning Anthracite, 45, 126
Fire-proof staircases, 391
Fires, river-side, extinction of, 391
Flax, bleaching, 304, 368
Flint, soap from, 228
Flour-maker, Hebert's patent, 65, 305
Fluid, electric, existence of an, 406
Fly-guard, 45
Flies, oil from, 288
Foreign and British literature, interchange

of, 77
France, state of the arts in, 272

introduction of salmon into the
rivers of, 404

steam-power in, 432
Franklin Institute, experiments by, on steam-

boiler explosions, 82, 98, 114, 116, 185,

205
Fusing point of various metals, 103, 119

G.
Galvanic power, M'Gauley's, 336, 371, 412
Gambart, M., notice of, 336
Gas from steam-boilers, experiments on, 188

generator for shipping, Hutchison's, 1
purifying, Phillips's mode of, 80
retorts, Hutchison's patent, 177

-, Brunton's patent, 449
Gasometer, double-acting, 32
Galvanism, production of artificial crystals
by, 375, 397

-, change in minerals by, 374
Geological Museum, 128
Geology, M. Guesney's new system of, 370
George III., Wyatt's statue of, 336
Glasgow, power-looms in, 400

--, steam-engines in, 400

cotton trade 432
Glass, favourable to the transmission of
sound, 72

-, transparency of, destroyed by steam,
88
Gowland's three-nibbed pen, 154
Gravaries, improved mode of constructing,

152
Granite polishing machine, 432
Griffiths, Mr. R. C., esidence of, against

tunnels, 334
Guage, liquor, Fage's, 80

, steam, 83, 87
Gun, percussion, new, 112

with revolving breech, ancient, 344
Gutzlaff's Chinese Magazine, 179

H.
Hancock's steam-carriages. See Steam-car-

riage.

Hansom's new safety-cab, 59
Hat, folding travelling, 399
Hearing, Webster's instrument for assisting,

347
Heat, polarisation of, 48
Heating the elephant's house at the Zoologi-

cal Gardens, mode of, 48
Heaton's brick-making machine, 282
Hebert's patent flour-mill, 65, 305
Heineken's medal-cutting engine, 241
Hinge-making apparatus, 191
Hogs, scent of, inimical to weavils, 152
Horology, Rise and Progress of, Henderson's,

26
House-burning system, the, 411
Hunter's stone-planing machine, 79
Hutchison's gas-generator for ships, I; pa-

tent retort-bed, 177
Hydrogen in vegetation, 141
Hydraulic power-apparatus, Hale's, 146
Hydraulics, experiments in, 35.

I.
Ice, Professor Bache on the non-conducting
power of, 200
transport of heavy burdens on, 461

trade between India and America, 10
Incommensurable quantities, on the doctrine

of, 264
India, ice-trade with, 10

-, vegetable oils of, 24

culture of the potatoe in, 28
iron suspension bridge near Sagar, 50
mode of tempering sword-blades in, 78
steam navigation to, 301

rubber. See Caoutchouc.
Industry, good effect of, exemplified, 256,

272
Ink-stand, Stevens's improved, 229
Invalid's bedstead, Cherry's patent, 385
Inventors, poor, 452
Iron manufacture, discovery in, 32

case-bardening, 64
effect of velocity of air in smelting, 142

vaporisation of water by heated, 162,
168

mode of purifying cold short, 192

mode of bronzing, 192
---, ductility and malleability of, 201

boilers, manner of bursting, 207
ornaments, Berlin, 272
smelting, Devaux's process of, 336
steam-boat, 192
trade, British, 158, 176, 271

works in Scotland, 400
Iver M‘Iver on the experimental data re-

quisite to determine the limits of railway
velocity and economy, 14, 106

J.
Jacquard-loom, Rooke's improvements in the,

17
Johnson's, Dr. James, evidence against rail.

way tunnels, 330

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Jopling's, Mr. Joseph, railway hints, 43;

on the Kirkby slate quarries, 38

eus, 201

K..

Kiln, improved charcoal, 401
Kirkby slate quarries, 56
Kite-drawn carriage, 336
Klaproth's experiments on the generation of
steam, 98, 122

L.
Ladies' marine lise-preserver, 135, 298
Lamp, conoidal, 80

safety, Davy's and Upton and Ro-
berts's, 390, 413
Laplace, monument to, 210
Lardner, Dr., on the railway system, 364, 145
Lead, fusing point of, 105

mine, Sampson, Twigg, and Co.'s, 112

pipes protected by tini, 15
Life-boat, new, 224

preserver, ladies, 135, 298
Lighthouses, metallic, Capt. Brown's, 318

substitute for, on the shores of
the Black Sea, 357
Liquor-gauge, Fage's, 80
Locomotion. See Sieam Locomotives,
Long-work system of mining, 108
Lowell, Massachusetts, rise of the city of, 315
Lubrication by water, 364, 380, 397

M.
Macerone, Colonel; improved mode of

scythe-sharpening, 174; note on a chaf-
finch, 314; substitute for lighthouses on
the shores of the Black Sea, 357; the
British Association, 397 ; impracticability
of aerial navigation --Montgolfier's safer
than gas balloons, 408, 458; proposals
for navigating the Po by steam, 439
Mackintosh, Mr. T. S.; electrical theory

of the universe, 92, 94, 107, 148, 274,
298, 313, 339, 358, 359, 380, 388, 406,
417, 437, 459

improved paddle.
wheel, 33; on the practicability of aerial
navigation, 463
Magnetic balance, 464
Magneto-electric apparatus, 311
Maise sugar, 368
Manumotive-carriage, 464
Manuscripts in British Museum, 39
Marble cement, 292
Mechanics' Magazine, German, 240
Medal-cutting engine, Heineken's, 241
Medals, plan for exhibiting, at British Mu-
seum,

39

&c., new mode of taking casts from,
432
Mercurial steam-wheel, Jones's, 312

steam safety-pipe and gauge, 41
Merryweather's fire.engine branch-pipe, 35;

fire-ladders, 57
Metallic lighthouses, Capt. Brown's, 318

Metals, ducti.ity' and malleability of varie:
Meteo ological Society of London, 384
Metropolitan improvements, 132, 144
Microscope, hydro-oxygen, improvements in,

280
Mincing-machine, meat, 46
Minerals, change in the chemical character
of, bę galvanism, 374

, production of artisicial, by, gal-
vanism, 375
Mining, on the long-work system of, 108
Montgolfier's balloons, safety of, 408, 44),

458
Moon, siderial and tropical periods of the,

138
Mordan's triple-pens, 111, 153, 231
Music, new division of the scale in, 20

N.
Napier's rods, improvement in, 365
Napoleon, statue of, raising on the Colonne

Vendôme, 239
National debt, 7
Nettles, uses of, 336
Nickolls's condensing railway-locomotive,
124

0.
Oila, vegetable, duties on raw material of, 23
Opium, consumption of, in China, 336
Organ at Munich, curious, 304
Otaphone, Webster's, 347
Oxygen, operation of, in vegetation, 53

P.
Paddle wheels and propellers for steam.vessels:

Mackintosh's, 33
Morgan's, 34
Symington's, 34
Seaward's, 34
Busk's, 61
Rogers', 62
Maberly's, 62
Massie and Ranwell's, 96

Pickworth's, 321, 356
Pambour on Railways, 144
Paris, improvement of, 288
Parliament, llouses of, Dr. Reid's plan for
ventilating, 28

New Houses of, 132
Paste, preserving, 80
Patentees, plan to protect, 310. See Patents.
Patents, recent American, 44, 125, 151, 190,

255, 398
Patents, lists of new English, 63, 127, 223,
303, 367, 403

Scotch, 63, 128, 224,
304, 367, 463
Patents, law of, American, 232, 249

English, Bill to amend, 265,
299

evil of, 448

on the operation
of, by Junius Redivivus, 451

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Railway bills, Parliamentary resolutions

on, 319

Pen, triple-pointed, 111, 153, 231
Pencils, ever-pointed, improved, 47
Perkin's experiments on generating steam,

209
Phrenology in France, 352
Physics, Mr. Exley's new theory of, 418
Physicnotype, the, for taking masks of faces,

272
Pianofortes, mode of tuning, 67
Piekworth's patent paddle-wheel, 321, 356
Pilchards, natural history of the, 7
Pink colour, French, for porcelain, 384
Pipé-clay, washing with, 80, 228, 270
Pistol-pocket, improved, 151
Plough for subsbil, Sheriff's, 112
Ploughing by steam, 176, 226, 290
Po, steam' navigation of the, 439
Portraits, new modes of taking, 272
Potatoe in India, 28

beer, 176
Polishing wood, 240
Porcelain scale plates, 23
Power-looms in Glasgow, 400
Powers, new, 143, 146, 336
Presgrave's, Major, iron suspension bridge

in India, 50
Printing-apparatus, rotary, Mr. Rowland

Hill's, 271, 379
Printing for the blind, 304
Propert, Mr. J., evidence of, against railway

tunnels, 333
Provincial museums and institutions, 23, 59,

74
Pumps, improved, 46

Q.
Quadrant, introduction of the, 272

R.
Railway, London Grand Junction, 7, 400

Pneumatic, 8

Greenwich, 64, 108, 146, 150,
226

Southend and Hole llaven, 139
Blackwall, 139
Eastern Counties, 150
Northern and Eastern, 150
, Southampton, 150

Birmingham, 150, 356, 368, 370.
North Midland, 150
South Eastern, 150
Great Western, 150, 370
Midland Counties, 150
Manchester and Leeds, 150

Liverpool and Manchester, 150,
291, 445

Newcastle and North Shields, 150
Thames Haven, 150
York and North Midland, 150
Baltimore and Ohio, 183
Brighton, 245, 326
Brussels and Antwerp, 352
Petersburgh and Pawlowsky, 432

Newcastle and Hexham, 445
Railway, Dublin and Kingstown, 445

carriage, Birch's first-class, 369

retarder, Jopling's, 43,
108

Earl Dundo-
nali's, -64

, Curtis's, 144

Millichaps,
117

Smith's, 399
wheels, 398
engine spark-arrester, Jones's, 183

Shultz's,396
inclined planes, suggestions for
working, 198

power of locó-
motives on, 245

performance extraordinary, 400
phenomenon, 40.
phraseology, 317
platforms, slate, 43

system, 138, 144, 195, 363, 368,
445

in America, 176
table, comparative, 150
theorems, 14, 106
tracks, best width of, 443

works, comparative mortality at,
368
Railways, clearing, from obstructions, 432
Rays, polarised, power of, 320
Reading-room of British Museum, improve-

ment of, 38, 76. See British Museum.
Record commission publications, 59, 75
Reed, Mr. Williani, death of, 288
Reid, Dr., on ventilating, &c. the Houses of

Parliament, 28, 69, 320
Resuscitated inventions, 365, 397
Retorts, gas, Hutchison's patent, 178

Brunton's patent, 449
Riches, how to obtain, 256
River-side fires, extinction of, 391
Roads, new mode of making, 151
Rocket-light beacons on the shores of the

Black Sea, 358
Rooke's improvements in th: Jacquard loom,

17
Russia, railroads in, 432, 461

S.
Safety-lamp, inefficacy of, 108

Davy's and Upton and Roberts', .
390, 442
Safety-valve, improved, 248

-, experiments relative to the, 211
Salmon fisheries, introduction of, into France,

404
Sagar iron suspension bridge, 49
Saw for felling trees, 47
Saw-mill saw, improved, 152
Sayer, Dr., evidence against railway tun-

-nels, 333
Scale, new mathematical division of the

music, 20

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Scale-plate, porcelain, 23
Screw-cutting machine, Tracey's, 376;

Heineken's, 377
Screw-drivers, short and long, 254
Scythe-sharpening, improved mode of, 174
Sea-water purifying Company, 64
Sheep, scent of inimical to weaviis, 152
Ships, apparatus for unloading, 47
Shoe-pegs, machine for splitting, 151
Shoes. See Bools, fc.
Shop-bill, philosophical, 304
Siderial time for ascertaining ships' place,

244, 293
Signal-lantern, ship's, 96
Slate furniture, &c., manufacture, 231, 254
Slate quarries, Kirkby, 56
Sloane, Sir Hans, founder of the British

Museum, 259
Soap, olive oil, 23

-, Silica, 228

-, substitute for, in linen washing, 80,
228, 270
Sound, principles of, 69
Sounding instrument, Ericsson's patent, 353,

458
Spark-arrester, Jones's, 183

Schultz's, 396
Speeder, new double-acting, 190
Specula, casting and grinding, 314
Spelling, on literal, 157
Spontaneous combustion, 320
Steam, tables of the properties and practical
application of, Enys, 4

elasticity, &c. of steam,
under various circumstances, 92, 98, 101,

102, 123, 216
Steam and water power, caparison between,

290
Steam-boiler, apparatus for registering water
supplied to, 6

high-pressure, safety-apparatus,
41

Reed's improved, and new mode
of feeding, 152

Saloman's improved, 190

Pott's pump for feeding, 193

-, government regulation of size
of, for carriages, 199

high-pressure, safety-valve and
damper for, 248

Landale's safety-apparatus, 361

Steam-boiler explosions, Report of Franklin

Institute on, continued
experiments on the conversion of water

into steam by heated metal, 98
injection of water into intensely heated

steam, 99
steam surcharged with heat, 102
plates of fusible alloys, 103
fusing points of alloys applicable to steam-

boilers, 119
vaporisation of water by copper, 123

iron, 162

considerable quantities
of water in copper, 165 ; iron, 168
ditto, larger quantities of water, 171
stationary temperature of alcohol on heated

metals, 173
the production of permanently elastic

fluid by intensely beated metal, 186
sort of bursting produced by gradual

pressure within cylinders of iron and

copper, 207
Perkins's experiments, 209
construction and graduation of the safety.

valve, 211
performance of the safety valve, 212
effect of deposits in boilers, 215
elastic force of steam at working pres-

sures, 215
Steam-carriages on common roads, Hancock's,
95, 111, 128, 191, 199, 433

Sir Charles Dance's, 111
Mr. Gurney's, 111, 199

- tolls' bill, 199, 335
Steam-engine, early working in Cornwall, 3

-, work, Cornish, 3, 136, 269,
340

high-pressure, Woolf's, 3

Symington's patent condens-
ing, 295, 310, 338, 362, 444
-, rotary, Jones's, 312, 341

Pearson's, 392

Avery's, 412
Steam-engines in Glasgow, 400

Belgium and France, 432
-, generation of, experiments on. See
Steam-boiler Explosions.
Steam-locomotives, railway, Nickolls's con-
densing, 124

experiments with, on the Bal.
timore and Ohio railway, 183

-, power of, on levels and in-
clines, 245

work done by twelve of the
best Liverpool and Manchester, 291

experiments as to the best
mode of applying power to, 308

Booth's improvements in, 365

mode of increasing hold of,
on rails, 397
Steam-navigation to India, 301

of the Po, 439
ploughing, 176, 226
vessel, Chinese, 180

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explosions, report of experi-
ments of Committee of Franklin Institute

on, 82

description of the apparatus, 82
the steam gauge, 83
thermometers, 85
subjects of investigation, 86
commotion produced on relieving boiling

water from pressure, 87
gauge-cocks and glass water.gauge, 87
alarm-floats, 91
effect of foaming on the elasticity of steam
within the boiler, 91

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Tunnels, railway, transmission of sound
through, 73

--, evidence given before Par-
liamentary Committee against, 327

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Upton and Roberts's safety-lamp, 390, 442

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Steam-vessel, iron, 192

for canal tunnels, 257
miniature, 272

Novelty,'' 363
wheel, Jones's mercurial, 312, 341
Stephenson, Robert, Esq., on the power of

locomotives on level and inclines, 245
Stirling's ornamental slate works, 231
Stevens's improved fountain inkstands, 220
Stone, artificial, Clinton's, 191
Stone-planing machine, Hunter's, 79
Stoves for burning Anthracite, 45, 126

Dr. Arnott's, 320, and see Anthracite.
Street water-posts' handle, 378
Şubmarine apparatus, Kemp's, 96

Atkinson and Hale's,
399

illumination, 464
Sugar, beet-root, manufacture of, in France
96

in Russia,
366

maise, 368
from starch, 181

from urine, 240
Sun, eclipse of the, 137, 283
Surface, rough or smooth, effect of, in the

generation of steam, 123, 160
Surveyor's vade-mecum walking-stick, 176
Sword-blades, Indian mode of tempering, 78
Symington's patent horizontal windmill,
273 ; system of condensation, 295, 310,
362, 393, 444

T.
Tables, tiger and panther wood, 48
Technological collection, Austrian imperial,

431
Telegraph, new, 320
Theodolite, improvement in the, 44
Thermometers for measuring temperature of

steam, 85
Thomson, Dr. A. T., evidence against rail-
way tunnels, 332
Thrashing-machine, 45
Throstle-flyer, Kean's patent, 61
Tidal power-engines, 151, 190
Tides, theory of the, 93, 298, 343, 382, 417,

437,464
Time and temperature measurer, 368
Tin, lead-pipes protected by, 15

fusing point of, 106

vaporisation of water by heated, 163
Travelling, cheap, 144
Trees, machine for felling, 47
Troughton, Edward, Esq., memoir of, 143
Tubes, metallic, apparatus for making, 191
Tuning musical instruments, 20, 07
Tunnel under the Ohio, 15

Thames, 143
Tunnels, canal, new mode of traction through,

256

V.
Valve, safety, experiments on the action of,
211

improved, 248
Vegetable oils, effect of duties on, 23
Vegetation, connexion of electricity with,

25, 53, 94, 107, 140
Ventilation of mines, Halliday's plan for, 12

-of the Houses of Parliament, Dr.
Reid's evidence on, 28, 320
Vine, cultivation of the, in England, 32

W.
War, consequences of, 7
Warming and ventilating the Houses of

Parliament, 28
Washing with pipe-clay, 80, 229, 270

machine, 45
Wash-hand stands, slate, 254- 7.3!
Water, evaporation of. Sce Steam-boiler
Explosions.

transmission of sound over, 70
-, agitation of, under heat, 88
-, rotary currents in, 96

lubrication by, 364, 390, 397
hard, mode of rendering soft, 432
gauge, glass, 87
posts, street, handle for, 378
power, new application of, 255

and steam power, comparison bee'
tween, 290

wheels, velocity of, at night, 192
Watt's steam-engine work, 3, 136, 269, 340,

363
Weekes's, Mr. W. H., observations on the

eclipse of the sun, 283
Wheels for 'railway-carriages, Tier's, 398
Wind, constant currents of, 462
Windmill, Symington's horizontal, 273
Window-sash, improved, 42
Wire for piano-strings, best, 68, 38

plate engraving, 446
Wood-polishing, 240

, embossing on, 368
Wool, cleaning, 125

carding machine doffer, improved, 255
Woolf's bigh-pressure engipe,

X.
Xylographic cheque-plates, 47

Z.
Zinc, properties of, 202

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