Bazin's mode of laying ropes, 442
Beale's rotary engine, 392, 463
Beams loaded vertically, flexure of, 174
Bee-house, James's, 396
Bee-preserver, Cope's, 441

Bentham's, Sir S., plans for breakwaters, 18
Bessel's discoveries respecting the stars
Sirius and Procyon, 176

Bessemer's gold paint and bronze powder, 4
Billing's electro-magnetic machine, 401
Bituminous lake, 160

Blacklead marks, erasure of by caoutchouc,
300, 427

Blasting by galvanism, 159

Bleaching machine, Alliott's patent, 161, 179
Bodies, rigid, defects of elasticity in, 270

-, amorphous and crystalline state of, 13
Boiler, new, Fairbairn's, 279
Boilers, Murray on the construction and
proper proportions of, 453
Bombshell without fuse, invention of claimed
by T. H. Pasley, Esq., 118
Books, old, curiosities of, 294, 325
Boots and shoes, Hutching's improvements
in, 78

Booth and Stevenson's brick machine, 396
Botterill's, Professor, memoir on the in-

fluence of light, air, &c., on ale and porter

Arts and sciences, lists of new works con-
nected with, 156, 222, 285, 381, 477
Atlantic and Pacific junction canal, 329
Atmosphere, the, 64

Atmospheric marine steam engines, 220, 239,
293, 304, 318

propulsion, Pilbrow's improved

system, 417
in, 190

-railways, Aitkin's improvements

Hallette's system of

Roberts's improvements

railway, French, 100

Auriferous pyrites of New Grenada, improve-
ments in dressing it, 138
Axles, Rowan and Co.'s patent, 256
Baddeley, Mr. Wm., on the lightning con-
ductor at the New Royal Exchange, 140,
204, 228, 325; on Col. Macerone's,
(alias Wright's) patent waterproof com-
position, 200

Bagration's, Prince, new voltaic battery, 44
Baily, (late) Francis, memoir of, 254
Baker's Periphan or improved planetarium,
177
Ballard's improvements in the manufacture

of soda and potash from sea water, 299
Barlow's railway key and wedge, 394
Battery, Smee's, new arrangement of, 378
Bavarian beer, 470

Bouch's spring for railway carriages, 170
Brayton's let-off loom motion, 396
Bread manufacture, Dr. Ure on, 345
Breakwaters, Sir S. Bentham's plans for, 18
Breechin, Lord Thurlow's, 377

Brick machine, Booth and Stevenson's, 396,
Bridge architecture, Dredge's system of, 139
Bridge of suspension over the Danube, by
Tierney Clark, Esq., 124

Brine, Sylvester's mode of evaporating, 125
British Association, York Meeting, 1844;
250, 269, 279, 301, 314
Bronze powder, analysis of, 4

Bronze, Chinese, 16

Bruce's skim or stubble plough, 73

Brunton's wind hammer for boring rocks, 203
Buck's paddle-wheel, 441

Buildings, a crooked one made straight, 64
Building stones, selection of, 288

Butter casks, proper wood for, 27

", how to keep it sweet, 28

Calculator, the, by J. W. Woollgar, Esq.,
212, 243, 291

Calculation, devices in, 291

Canals, screw propellers on, 48
Canal steam navigation, 288

Carriages, two-wheeled, Vipond's improve-
ments in, 168

Carr's lard-burning lamp, 440

Casting moulds, Harley and Morris's, 397
Cement, Armenian, 288

Century of Inventions, Marquis of Worces-
ter's, 408

evidence, fallacy of, 345

Chemistry, college of, 111

Dumas's system of, 102

Chimney ventilator, Clement's, 193
Chimney-pot and cowl-sweeper, Middle-
ton's, 32

China, new plant from, 43

coal in, 159

Chinese bronze, 16

Chlorine, new commercial products from, 164
Chocolate, Dr. Ure on, 473
Church bells, cheap, 288

of terra-cotta, 159

Churn, Rowan's, 97

Chrome, compounds of, 101

Circular arcs, the geometry of, 122, 136, 191
Clark's, Mr. Tierney, suspension bridge over
the Danube, 124

pyro-hydro-pneumatic apparatus for
purifying sea-water, 360

Clayton's drain tiles, pipes, &c., 395
Clement's chimney-guard and ventilator, 193
Clockwork, teeth of, 379

Cloth, making it by the mile, 159
Coal-breaking machine, 32

gas, on the purification of, 431
in China, 159

mines, suggestions for preventing acci-
dents in, 262, 467

Cobby's apparatus for converting the motion
of paddle-wheels, 145
Coffee, Dr. Ure on, 473

Collandeau's new steam-pressure gauge, 41
Colours, printing in, 273

-, certain, singular effects of, in juxta-
position, 303

Colouring matter, Crum on the manner in
which cotton unites with, 153
Combination lock, Cotton's, 396
Compound wedge, Nicholson's 296
Concussion shells, Marsh's, 192

Conical balance valves, McDonough's, 397
Consolidated mines of Cornwall, 187

Cooking apparatus, Warr's, 33

stove, Mott's, 398

stove, Pettes's, 399

Cope's bee-preserver, 441

Copper, new oxide of, 99

Copperplates, photographic engraving of, 236

Copper trade with India, 352

Coprolite mystification, 13

Copying instrument, Hollamby's, 371

Cornwall, the fishing boats of, 172

Corrosive sublimate, antidote to, 208

Cotton's combination lock, 396

Coxworthy, F. Esq., on warming and venti-
lating, 120,194, 261.

Crank, substitute for, Lipscombe's patent,
180, 202, 233, 277, 297, 307
Crimpling, fluting and quilling machine,
Hughes's patent, 321

Croll on the purification of coal-gas, 431
Crystalline and amorphous state of bodies,

13

Curiosities of old books, 294, 325

Curves, Jopling's septenary system of, 247
Daguerreotype pictures, mode of colouring
them, 173

Dalton, Dr. John, death of, and notices re-
specting, 80, 159, 253

Damp walls, 288

Danube, suspension bridge, 224

Datum plane, and Ordnance Survey, 314
Dead-eye, Chatten's patent, 449

De Morgan's, Profr., rectification of a mis-
take respecting Easter-day, 1845, 46
Designs, copyright of; cases, 240, 329, 339
--, useful, on the registration of, 357
Diamonds, Mr. Sankey on augmenting their
size artificially, 39

Dircks, Henry, Esq., on the patent Argand
furnace, 255; the discovery of electro-
metallurgy, 366

Direct-action engines, the invention of Mr.
Symington, 466

Ditné on the expansion of glass, 22

Diverging and converging series, on, 334, 424
Domestic fire-escape, Taylor's patent, 248
Drain tiles, pipes, &c., Clayton's, 395;
Watson's, 336

Drayton's patent for silvering glass, 125
Dredge's system of bridge architecture, 139
suspension bridge erected over the

Ballee Khal, in India, 257
Dumas's chemistry, 102

Dundonald's, Earl of, rotary engine; exten-
sion of the patent for 14 years, 351
Duvernet's, Captain, claim to the invention
of the modern Archimedian screw, 295
Dyeing machine, Alliott's patent, 161, 179
Earth, interior of the, 320

Earthquakes, statistics of, 480

Easter-day, 1845; Professor De Morgan's
rectification of a mistake respecting it, 46
Effluvia of manures, destruction of, 235
Eggs, pickled, 352

Elasticity of metals, 238

in rigid bodies, defects of, 270

Electrical steam machines, 96

Electricity applied to the manufacture of
iron, 105

Electro-telegraphy, 320

Energiatype, Mr. Hunt on the, 302

Engineering, Weale's Quarterly Papers on,
review of, 66

English steam-engines in France, 304

Essences, vegetable, 192

Etching, history of, 159

Excise system, the evils of, 346
Expectation of life, 78

Explosion on board the "Gipsy Queen,"
steam ship, fatal, 331, 354

of the American

locomotive

"Richmond;" investigation of the cause
thereof, by Dr. Lardner, 402
Explosive compounds, 156
Fairbairn's new boiler, 279

Fall of a mill at Oldham, from defective
construction, 320, 348

Farey, John, Esq., on the cost of raising
water to given altitudes, 311
Filtration of water, memoir on, 146
Fire-detector, 400

Fishing boats of Cornwall, 172

Fish oils, purification of, 101

Fixed stars, enumeration of, by Mr. Wooll-
gar, 92

Fletcher's improved mangle, 289
Floating bogs of Ireland, 20

Foreign science, 13, 20, 41, 99, 235
Fossil manures, analyses of, 13
Foundations of sand, 288

Fownes, Dr., on the preparation of artificial
yeast, 143

France, English steam-engines in, 304
French air-propelled locomotives, 192
atmospheric railway, 100

indigo, 99

law of patents, 63
mis-anglo-mania, 141
new gun barrel, 221

Friction, rolling, of carriage wheels on rail-
ways, 42

apparatus for preventing, 359
Fuel, Mr. Woods on the consumption of, on
the Liverpool and Manchester railway, 71
Fulton's plan of blowing up ships from
under the water, 78, 91
Furnace, hydrogen, 281

Furs, &c., effectual mode of preserving them
from the ravages of moths, 64, 96
Galvanic battery, new constant, 237

explosion of gunpowder, by double
and single metallic circuits, 28
Galvanism, blasting by, 159

-,growing potatoes by, 224
Garancine, Steiner's patent for manufactur-
ing, 126

Garratt's thrashing machine, 128

patent chaff-cutter, 49

Gas-lamp, Jones's pendant, 305
Gas-meters, 475

Geometry of circular arcs, 122, 136, 191
Gladstone's patent iron-cutting machine, 1
Glass, a beautiful red colour for, 101

louvres, 452

Glass, on the expansion of, by M. Ditné, 22
-, extraordinary plates of, 304

Gold ores of Merionethshire, 316

paint, Bessemer's, 4

Green colour without arsenic, 64
Grenelle, the Artesian well at, 420
Grain-cleaning machine, 415

Grove, Professor, on a photographic process
of one operation, 302

Guano, caution as to the use of, 384
Gun barrels, improvements in, 102
"" new French, 221
Gunpowder, invention of, 192

-, galvanic explosion of, by dou-
ble and single metallic circuits, 28
Guy's, Dr., method of ventilation, 453
Ham, on deposits in steam boilers, 40
Hand brick-making machine, Mansfield and
Harrison's, 209

Hankin's pedimechan, or spring propeller,
369, 424

Harbours of refuge, Captain Vetch on, 66
Holyhead and Port Dynllaen,
Sir John Rennie on, 69

Hardy's patent improvements in tube roll-
ing, 273

Harlem lake, drainage of, and description of
the machinery, 129, 192

Harley and Morris's casting moulds, 379
Hawksley's evidence before the Health of
Towns Commission, 338

Heard's reclamation of the introduction of
wood-paving, 465

Hemp-preparing machine, Montgomery's,
442

Herschell, Sir John, on the amphitype, 301
Hodgson's parabolic propeller, 238, 256, 268
Hollamby's copying instrument, 376
Hosiery power-loom, 27

Houses of iron, 400

Hughes's patent crimpling, fluting, and
quilling machine, 321

Hunt, Mr. R., on the energiatype, 302; on
the influence of light on chemical com-
pounds, 302; on the quantity of air that
enters the fire-places of Cornish engines,

171

Hutching's registered improvements in boots
and shoes, 78; registered blocking ma-
chine, 249

Hydraulic mortar, 100
Hydrogen furnace, 281

Hydrostatic break, Lipscombe's patent, 113
Hygrometer, a simple and sensitive, 235
Ice, artificial, Prevostaire's red-hot process
of producing, 23

Ice-making machine, Masters's, 118]
India, copper trade with, 352

rubber, why does it not soil after being
used? 380, 427

Ingenuity misdirected, 320

Institution of Civil Engineers, 475

Inventors, encouragement to, 381

Invisible writing, 192

Ireland, tide observations on coast of, 314

V