Ceilings, Cade's fire-proof, 183
Cemeteries, suburban, unhealthy, 476
Chairing railway blocks, Hunter's machine
for, 257

Champion's rotary engine, 194

Chanter's smoke-consuming furnace, 97
Chaplin's non elastic leather bands, 295
mode of tanning, 19, 295
Chapman's, W., rotary engine, 196
Chapman's, G., steam boiler, 374
Charcoal fuel, 96. See Joyce
Cheese, salt for making, 47
Chimney cleaning in America, 64
Chimneys, causes of, smoking, 208
China, useful arts in, 290
Chinese book-making, 291, 328
Chinese paving-stone, 32

Chucks, simple mode of forming eccentric
and oval, 86

Church's, Dr., railway signals, 416

—, steam carriage, 249

Cider, domestic manufacture of, 45
Circle, squaring of the, practical, 424

Civil Engineering, King's College Lectures
on, 80

Clark's rotary engine 196

Clay coal, smelting with, 319

Clegg's dry gas-meter, 431, rotary engine,
196

Coach lamps, improved, 416

Coal mines of France, 404

Cocker's needle-making machinery, 185
Colliery communication, new mode of, 421
Colours, experiments on, 394

Combis's Marquis de, rotary engine, 196
Comet, ephemeris of Encke's, 380
Compass in iron vessels, 416, 472
Condensing engine. See Steam Engine.
Congreve's rotary engine, 195; Rockets, 480
Cook's rotary engine, 196

Cooking stove, improved domestic, 177
Cooper, Professor, report of, on Joyce's
fuel, 313

Cooper's patent railway, 417
Copying machine, simple, 7
Copyright Bill, Serjeant Talfourd's, 71, 80,
116, 144, 239

Cordage, new mode of making, 320
Cornish steam-engine duty, 56, 203, 298
Cornwall Polytechnic Society, 5th report of,

268

Cornwall, Gilbert's History of, 11

Costigin's rotary engine, 196

Cotton, quick transformation of bale of, 208
Cows, apparatus for milking. 6

Craig's rotary engine, 194

Davenport's electro-magnetic engine, 94,
115, 166, 170, 210, 336
Davidson's rotary engine, 195

Davies's fire-proof paint, 232, 432

Davy, Mr. Christopher, on railway mileage,
31; Taylor and Davis's rotary engine, 49;
railway signals, 99

Dawes's rotary engine, 196

Deal, improvements at, 32

De Bode's patent cable stopper, 113

De Breza's incombustible composition, 55
Dakeigne's rotary engine, 196
Delap's rotary engine, 196

Dent's mercurial pendulum, 413
Die sinking superseded, 36

Docks, St. Katharine's, construction of, 89
Dodd's, steam-boiler safe plug, 400
Donkin's rotary engine, 195

Door weather strips, Brower's, 303
Downton's ships pumps, 39

Dredge's suspension bridge chain, 115
Dry rot. See Anti-dry rot.

Dundonald's (Earl of) rotary engine, 196
Earthenware wash-hand stands, 438
Education, in America, 156
Electrical lady, 112

Electrical telegraph, 320

Electricity, sounds caused by, 112; Clarke's
experiments in, 446

Electro-magnetic engine, Davenport's, 94,
115, 126, 166, 170, 210, 336
Elliptical compasses, Aris's, 108
Elm bark, tanning properties of, 234
Elmes's survey of the port of London, 87
Encke's comet, Ephemeris of, 380
Engraving, Woone's mode of, 163, 210, 236,
297, 413; Knight's illuminated, 230,
413; Chinese,291; Bate's machinery, 296;
Nuttall's mode of, 297; Hancock's, 387
Eny's, Mr., observations on steam-engine
duty and horse power, 298.

Epicycloid, mode of generating the interior,
186

Ericsson's propeller, 143, 176, 283; rotary
engine, 196

Ettrick's, Mr. W., mode of cutting off a head
without removing it, 296

Evans, Mr. R.; on Taylor's steam boiler
feeder, 51; Rowley's rotary engine, 322
Evans's, J., rotary engine, 196
Evaporating, Bell's improvements in, 317
Eve's rotary engine, 196

Everitt's, Professor, experiments on Joyce's
fuel, 75

Ewart, Mr. P., evidence on the Victoria ex-
plosion, 353

109, 166, 170

Crowther's rotary engine, 196

Curve, parabolic, new mode of drawing, 42
Cylindrical boilers, on strength of, 276, 325;
rule for calculating, 370
Daslesme's rotary engine, 194

Chapman's, 376

Fairbairn's riveting machinery, 473
Falling bodies, singular fact in, 280
Fan blowing, theory of, 85

Farey, Mr. John, evidence on the Victoria ex-
plosion, 356, 365

File for accounts, &c., Good's, 70
File-cutting machinery, 165

Fire, danger of, from steam-boat flues, 434
Fire brigades, honorary, 280, 397
Fire-engine, Downton's, 39: Kingston's,
39, 69; Hearle's, 40; Merryweather's,
5, 69; Baddeley's floating, 279; porta-
ble Swiss, 422

Fire-engine beating springs, 119
Fine-engines, parish, inefficiency of, 4; on
ship-board, 5, 39, 69
Fire-escapes, on various, 435
Fire-extinguishing fluids, 55
Fire police, City, 4

Fire-proof ceiling, Cade's, 183; composi-
tion, Davies's, 232, 432
Fish, refuse, application of, 128
Fitzgerald's rotary engine, 196
Flax, machine for dressing, 206
Flint's rotary engine, 196

Flockton's mode of preserving timber, 48
Floor-cloths, machinery for drying, 143
Flour mills, domestic, 402
Foreman's rotary engine, 196
Frame-work knitting, improvement in, 480
France, railways in, 174, 176
Franklin's printing press, 16

Fairbairn's, engravings by Bates' machine,
296

Fuel, Joyce's patent, 32, 33, 53, 54, 73, 77,
105, 168, 208, 313; charcoal 96, 173;
consumption of, in steamers, 182; King-
ston's, 395; Oram's patent, 471
Furnace, smoke-consuming, Chanter's, 97
Galloway's rotary engine, 196
Galvanizing of metals, Sorel's mode of, 122
Galvanometer, Dr. Locke's, 271
Garden's, Mr., report on the galvanization
of metals, 123

Garbutt's new telescope mounting, 273
Gas lamp, Lebou's, 3; self-supplying, 224
Gas lighting. invention of, 3; in Paris, 4;
in Edinburgh, 135

Gas meter, Clegg's dry, 431

Gas stove, Wright's improved. 81

Gases, generation of explosive, in steam-
-boilers, 359, 373, 418
Gautier's rotary engine, 196

Gay-Lussac's report on Joyce's stove and
fuel, 73

Geological models, Sopwith's, 431
Gilbert's History of Cornwall, 11
Gin, apology for, 224

Glass-cloth, Baker's, 447
Good's account file,

Gorgon steam frigate, description of, 185,

238

Gradients, table of railway, 476

Graham's, Professor, report on lpan oxydat-
tion of metals, 122

Great Seal of the United Kingdom, 318
Great Western, first voyages of, 120, 151,
172, 432

Gregory, Dr. O., retirement of, 208
Gun-making machinery, Blanchard's, 448
Gunnery, Symington's improvements in, 160
Gurney's steam-carriage experiments, 386
Hague's wheels, 243

Hair, removing, from skins, new mode of,303
Halliday's rotary engine, 196

Hall's steam-engine. See Steam engine.
Hancock's, Walter, steam carriages 80, 162,
211, 224, 249, 312, 326, 328, 380, 420,
438; Narrative of Experiments, 386
Harper and Joyce's stove. See Joyce.

Hatter's irons, stoves for heating, 206
Hawkesley's rotary engine, 195
Hearle's ships-pumps, 40

Heating apparatus, Perkins's, 425; and see
Stove.

Hebert's steam-boiler, 327

Hemp, Lull's machine for dressing, 207
Herapath and Cox's new method of tanning,
17, 60, 470

Hero's rotary engine, 195
Hjorth's rotary engine, 337
Hobday's rotary engine, 196
Hornblower's rotary engine, 196

Horse-power, Eny's observations on steam-
engine duty and, 298

Horse-shoes, statistics of, 214
Hot-house stove, Joyce's, 304

Houses, machine for removing whole, 303
Hulls's
's rotary engine, 196
Humphrey's slide valves, 8

Hunter's stone-planing machinery, 47; ma-
chine for boring and chairing railway
blocks, 257

Hydraulic belt, Hall's, 431

Hydraulic telegraph, Whishaw's, 46
Incombustible, fluid for rendering goods, 55
India rubber. See Caoutchouc.

India rubber steam-engine, Hancock's, 387
India, steam navigation to, 16, 35, 98, 120,
150, 168, 262, 293, 329
Indicator, Dr. Lardner's, 471
Ireland, state of roads in, 215
Iron, smelting, with anthracite, 111, 319;
melting with coke, 126; effect of water
on, 429, 474; foreign substances in,
469; application of steam in manufacture
of, 470

Iron beams, Rastrick's experiments on
strength of, 23;

Iron chest, Sherwood's patent, 142
Iron gates for the Pacha of Egypt, 448
Iron steam-vessels, 148; compass in, 416,
472; for the Nile, 448

Iron for railways, Mushet on manufacture
of, 212

Iron welding, improved, 272

Irons, smoothing, stove for heating, 206
Iron plate, of enormous size, 320
Iron mines of France, products of, 406
Ivison's mode of consuming smoke, 403, 447
James's steam-boiler, 327

Jane's rotary engine, 196
Jones's miners' ascending apparatus, 433
Joyce's patent stove and fuel, 32, 33, 53,
54, 73, 77, 105, 168, 208, 313; steam
hot-house stove, 304

Kemple's rotary steam-engine, 194

Kemp's design of monument to Sir Walter
Scott, 78

Kent's practical hints to beginners in turn-
ing, 85

Kingston's portable ships' pumps, 39: ro-
tary engine, 196

Kircher's rotary steam-engine, 194
Knight's illuminated engraving, 230, 413
Knighthood of scientific men, 320
Kyan's anti-dry-rot process, 182
Lamp, self-generating gas, 224; improved
carriage, 416

Lander's rotary engine, 196

Lardner, Dr., and Atlantic steam navigation,

151, 247, 471; and animal magnetism,
208; on speed on railways, 329, 377;
steam-engine register, 471

Lead, combination of, with water, 112; quan-
tity of, produced in France, 408
Leather. See Tanning.

Lebon's gas lamp, 3

Lecount's mode of connecting railway trains,
29

Leopold's rotary engine, 195

Lester's rotary engine, 196

Levelling stave, Sopwith's, 468
Lightning, effect of, on tools, 368

Lime burning, Garber and Co.'s new mode
of, 109

Linens, English, in France, 32
Lithographic press, Pinner's, 176
Liverpool High School, 48

Locomotive engine. See Steam-engine.
London, port of, Elmes's survey of, 87
London fires, Baddeley's report on, 451
Loom, improved shuttle-tongue, 111
Losh v. Hague, report of trial, 242
Lucy's rotary engine, 196
Newton's rings, colours of, 394
Macerone, Colonel, on the bill for the

regu-

Mechanical character of the present and past

ages compared, 270.

Medal engraving; Bates' machine, 297.
Medal striking, Pistrucci's mode of, 36.
· Medhurst's rotary engine, 196.
Medhurst's State, &c. of China, 290.
Mercurial pump, Mills's, 188, 231, 282, 297
Mercurial pendulum, Dent's, 413
Merryweather's portable fire-engine, 5
Meteorological almanac, Murphy's, 71
Milk, analysis of, 218

Mill, flour, domestic, 402
Mill-stones, chattering of, 402

Mines, ventilation of, new method, 369
Miners ascending apparatus, Jones's, 433
Mining in Cornwall, 11; in France, 404;
experiments near Hay, 450
Mitchell's rotary engine, 196
Montgolfier balloon, great, 96.
Moore's rotary engine, 195
Morgan's rotary engine, 196

Morland's, Sir S., speaking-trumpet, 22
Mountain barometer, Sir J. Robison's, 469
Murdoch's rotary engine, 196

Muriatic acid gas, effects of, on trees, &c., 61
Murphy's Almanacs, 71

Murray, Mr. J., on various inventions, 168;
Kyan's anti-dry-rot process, 182
Murray, M., rotary engine, 196

Mushet on manufacture of railway iron, 212
Musical instrument wires, platina, 384
Needle-making machinery, Cocker's, 175
Newcomen's atmospheric engine, 298
Newspaper, Persian, 240

Newton's Rings, colours of, 394
Norton, Captain, on the Boomarang, 268;

singular fact in falling bodies, 281; float-
ing breakwater, 396; percussion lead, 447
Obelisks, Slack's mode of building, 225
Oil-cloths, machinery for drying, 143
Oil-test, Mac Naught's, 155
Onion's rotary engine, 196
Oram's patent coal, 471

Oxydation of metals, prevention of, 122
Paddles, sail-worked, 112. See Propellers.
Parabolic curve, new mode of drawing, 42
Parallelogram, singular properties of a cer-
tain, 396

Pasley, Col., blowing up of the William by,
131, 447

Patent, fire-proof paint, Davies's, 232, 432
Patent law, English, change in the, 176
Patents, list of English for April, 63; May,
127; June, 222; July, 286; August,
382; September, 478

Scotch, April, 64; May, 144 ; June,
223; July, 287; August, 384; Septem-
ber, 479

Irish, March, 64; April, 128; May,
224; June, 256; July, 384; August, 479
Patents, American, notices of new, 109, 142,
205, 239, 303, 319

Patents, increase in number of, 224; great
seal to, 318

Piston, Peacock's metallic, 289
Pistrucci's mode of medal striking, 36
Platina wires for musical instruments, 384
Plough, Symington's slope, 48; premium for
a steam, 144; French steam, 480
Poisons, sale of, in shops, 59, 82
Porta, John Baptista, inventor of camera
obscura, 23

Porter's Progress of the Nation, 214; sta-

tistics of mining industry in France, 404
Practical design, Society for Promoting, 47
Price's round-sole plane, 394
Printing, Chinese method of, 291
Printing machine, American, 480
Propellers for vessels, sail-worked, 112;
Ong's patent, 143; Ericcson's, 143, 176
283; Taylor's, 400, 432; Davidge's, 448
Prosser's railway speaking-trumpet, 30
Prussic acid, antidote for, 336
Pulleys, lengths of belts for various sized,
101

Pumps, Downton's, rotary, 39; Kingston's,

39; Hearle's, 40; Mills' mercurial, 189,
231, 282, 297; on the classification of,
297

Pyramid of Egypt, construction of, 220
Pyrotechnic locomotive engine, 368, 436
Raddatz's steam-boiler, 327
Railway, Cooper's patent, 417; Price's,
430; Motley's, 430
Railway, Grand Junction, 29, 333, 416
London and Birmingham, 31,
220, 368, 416, 444

Read's rotary engine, 196

Reid, Dr., on ventilation, 468; respiration,
air required for, 468.

Rickett's

gas stoves, 134
Riddle's pen-holder, 41
Rider's rotary engine, 196

Riveting machinery, Fairbairn's, 473
Roads in Ireland, state of, 215
Robison's, Sir John, gas-stove, 135; singu-
lar properties of a certain parallelogram,
397; substitute for the mountain baro-
meter, 469

Rockets, safety, Gyngell's, 32; locomotion
by, 368, 436; coup de grace, 436; Con-
greve, 480

Rogers's, Dr., sand-bath, 449
Ropes, wire, use of, 471

Rotary engine. See Steam Engine. Pro-
fessor Russell on the fallacies of the, 192;
Round sole plane, Price's, 394
Routledge's rotary engine, 196
Rowley's rotary steam engine, 321, 412;
buffing apparatus, 457

Rush's patent steam boiler, 239

Russell, Professor, on the fallacies of the
rotary steam-engine, 193; on the motion
of waves, 410, 426; on steam navigation,
472, 474

Russian weights and measures, 453
Sadler's rotary engine, 194

Saddle trees, Kelley's improved, 205
Safe, Sherwood's patent, 142
Sail-worked paddles, 112

St. Austell, Cornwall, account of, 12

St. Katharine's docks, construction of, 89
Salt for dairy purposes, 47
Sand-bath, Dr. Rogers's, 449
Scaffolding, mode of building obelisks with-
out, 225

Schafhaeutl's rotary engine, 196

Science, men of, an dorders of knighthood,320
Scott, Sir Walter, Kemp's design of monu-
ment to, 78

Seaward's patent slide-valves, 8, 23, 52;
patent steam.saver, 106; steam-engine,
185, 238; evidence on the Victoria ex-
plosion, 351, 361; on the comparative
strength of cylindrical boilers, 370, 415;
on the cause of steam-boiler explosions, 473
Ship-saving apparatus, Gyngell's, 32
Shipping of the port of London, 91
Ships, sunken, blowing up, 170
Shoes, waterproof, 22

Shot, hollow, 304

Sins's improvements in the steam-engine,
269

Silliman's straw cutter, 110

Silver, quantity obtained from mines in
France, 408

Sirius, first voyage of the, 120, 151, 182
Slack's method of building an obelisk with-
out scaffolding, 225

Slide-valves, Humphrey's, 8, 23, 52; Sea-
ward's, 8, 23, 52; Whitelaw's, 305;
Hawthorn's, 474

Slide-rest, Wilcox's revolving, 209, 267

Smoke, Chanter's plan for consuming, 97;

Iveson's, 403, 447

Soane's, Sir John, benefactions, 96

Sopwith's secretary's writing table, 409
Sorel's, M., galvanization of metals, 122
Soult's, Marshal, visit to Birmingham, 301
Sounding machine, Massey and Co.'s im-
proved, 137

Southampton railway station, 145
Speaking-trumpet, Sir S. Morland's, 22;
Prosser's railway, 30

Speed, comparison of, 31; of steam-vessels,
148, 150, 152, 168, 295; on railways,
329, 377

Spoke-shave, Beckwith's improved, 112
Spontaneous combustion, 64
Springs, caoutchouc, 180

Steam heating apparatus, Joyce's, 304
-, on the expansive use of, in marine
engines, 391

destruction of smoke by, Ivison's
plan, 403, 447

Steam-boiler, Sir J. Anderson's, 161, 278,
312, 326, 328, 380, 420, 439; Hancock's,
162, 278, 312, 326, 328, 380, 388, 430,
439; Rush's, 239; cylindrical, 276, 325,
460; Trevithick's, 299; Bell's, 317;
Furnival and Smith's, 381, 313; Alban's
Raddatz's, 327, 381; James's, 327; He-
bert's, 327; Victoria, 340; Chapman's,
374 waggon shaped, 460; L flue, 461.
Steam-boiler explosion, Victoria, 118, 264,
309, 336, 340; American, 191; at New-
ton, 448

Steam, essence of, 176

Steam-boiler explosions, on causes of, and
modes of preventing, 264; Seaward on,
373; Greener on, 412; Barthe on, 418;
Symington, 444; Blanchard's, 448
Steam-boiler explosions, report of experi-
ments of Franklin Institute on, 455
undue heating of boiler by deposits, 455
inefficiency of "blowing off," 455
nature of deposits, 456

instances of deposits, 456

non-conducting substances in boilers, 457
cleansing and "blowing off," 457
effect of careening of steam-boats, 457
various proposed remedies, 457

Rush's plan, 457; Evan's, 458; Wil-
liams's, 458

undue heating of boiler in contact with
water, 458; instances, ib.

constant feeding of boiler, 452
self-regulating feeding apparatus, 459
water gauge, 459

fusible alloy plug, 459

table of fusible alloys, 460

defects in construction of boiler, 460

form of, waggon shaped, 460; tubular,
461; L flue, 461

material and manufacture, 462

appendages to boiler, 464
carelessness of engineers, 464

cases of collapse, 464

proposed bill, for regulation of steam
boats, 466

Steam-boiler incrustations, preventing, 288
safety plug, Dodd's, 401; Hum-

phrey's, 402

water gauge, Cook's, 83; Sy-
mington's, 444; Blanchard's, 448
riveting machinery, Fair-

bairne's, 473

Steam-boiler feeder, Taylor's, 51, 105, 146
Whitelaw's, 65,105, 133, 146,184; Cook's,
83, 146; Seaward's, 105; Baddeley's,
266; G. Whitelaw's, 266; Maule's, 412
Steam-carriages, common-road, Hancock's,
80, 162, 211, 224, 249, 279, 386

144, 161, 211

Sir James Anderson's, 83,

Maceroni's, 240; Church's,

249; Heaton's, 249

Steam-engine, Hall's patent condensing, 77,
100, 122, 168, 263