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INDEX.

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France, state of the arts in, 272

Hansom's new safety-cab, 59
Hat, folding travelling, 399

467

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, 1; pa-

tent retort-bed, 177

Hydrogen in vegetation, 141

introduction of salmon into the Hydraulic power-apparatus, Hale's, 146

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Hydraulics, experiments in, 35

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Jopling's, Mr. Joseph, railway hints, 43;
on the Kirkby slate quarries, 58

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 life-preserver, 135, 298
Lamp, conoidal, 80

safety, Davy's and Upton and Ro-
berts's, 390, 443

Laplace, monument to, 240
Lardner, Dr., on the railway system, 364, 445
Lead, fusing point of, 105

mine, Sampson, Twigg, and Co.'s, 112
pipes protected by tin, 15

Life-boat, new, 224

preserver, ladies, 135, 238-

Lighthouses, metallic, Capt. Brown's, 318
substitute for, on the shores of

the Black Sea, 357

Liquor-gauge, Fage's, 80

Locomotion. See Steam 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, ductility and malleability of vari
eus, 201

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, by galvanism, 374

, production of artificial, by gai-
vanism, 375

Mining, on the long-work system of, 108
Montgolfier's balloons, safety of, 408, 441,
458

Moon, siderial and tropical periods of the,
138

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

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Pen, triple-pointed, 111, 153, 231
Pencils, ever-pointed, improved, 47

INDEX.

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

Pickworth's patent paddle-wheel, 321, 356
Pilchards, natural history of the, 7
Pink colour, French, for porcelain, 384
Pipe-clay, washing with, 80, 228, 270
Pistol-pocket, improved, 151
Plough for subsoil, 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

469..

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in America, 176

table, comparative, 150

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

Powers, new, 143, 146, 336

445

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

368

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theorems, 14, 106

tracks, best width of, 443

works, comparative mortality at,

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. William, death of, 285

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 the Jacquard loom,

17

Russia, railroads in, 432, 464

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 weavils, 152
Ships, apparatus for unloading, 47
Shoe-pegs, machine for splitting, 151
Shoes. See Boots, &c.

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,

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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 heated 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,

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