Arts, Society of, 157, 206
Asphalte, Claridge's, composition of, 399
Atmospheric absorption, 19

Australia, Steam Navigation Company in,
207; Miller and Barnes, 271

-, supply of water in Sydney, 224
Axes, Root's patent for punching eyes of, 472
B.

Babbet's soft metal bearings for railway car-
riages, 476

Bacon's (Rev. H. F.) patent gas burner,
293, 390, 423, 470, 533

Baddeley, Mr. W., mechanical agitator, 20;
fire-escapes, voluntary brigades, ladders,
Duke of Buckingham's engines, 48; case-
hardening iron, 52; steam carriages for
common roads, 69; Society for Protec-
tion of Life from Fire, 86; stoves, 218;
fire-engines in Birmingham and Dudley,
234; Annual Report of London fires, 375;
ball cocks, 458; letter weighers, piracy
of inventions, 490; machine-made paper,
523; defective illustrations of scientific
books, models, 682; pulley rack for
blinds, 700; rival makers of letter ba-
lances, 715

Ballooning, new plan of, by Garnerin, 32
Eulriot's experiments, 78
Green's, 185, 480, 520
Weeke's suggestions, 53
general remarks on, 517
Balls, machine for projecting, M'Carty's,

474

-, printing, old and new, 748
Barnett's mode of working gas retorts, 129
Batchelder's dynamometer, 474
Bath, portable, hot, Le Croix's, 138

Russian vapour, effects of, 72
Beads, glass, mode of making at Murano, 285
Bedwell's barometer, 701, 14
Beer-cock Stocker's, 168

preserving, Storwell's apparatus for,
32; Berry's, 271; by pressure, 528
Beet-root, manufacture of sugar from, 14
Berney's patent cartridges, 493

Berry's, Mr. E. U., apparatus for preserv-
ing beer, 271

Bertrand's "Lettres sur les Revolutions du
Globe," 555

Birmingham Town Hall organ, improve-
ment in, 676

Blood, weight of, in human body at different
ages, Dr. Valentin, 144;

suspension, Dredge's, 706

Briscoe's steam-engine spark arrester, 302
British and Australasian Steam Navigation
Company, 207, 271

British Association, selections from proceed-
ings of, 28

preparations for meeting of, 528
Bryddel's common road steam carriage appa-
ratus, 160

Bryson's
's new chasing tool, 292
Bude light, Gurney's, 118

Bullen's, Admiral, safety belt for window
cleaners, 315; safety net for miners, 104;
ditto rope, 315

Bursill's letter balance, 419

Burstall's method of propelling vessels, 677
Button shank, Smeeton's, 697

1840, 460
Claridge's asphalte, 399

Clinometer, Jones's, for obtaining specimens
of strata, 233, 254, 304

Clocks, public, means of making cheap, 95
Clockwork of equatorials, on the regulators
of, 689

Cloth made by felting without weaving, 527
Coach lifter, 73

retarder, Parkin's, 162

-, Jearrard's, 724

Coal, anthracite, application of to steam
purposes, 127

artificial, Neville's, 128

-, comparative value of different sorts,
for gas making, 334, 460

mines of Commanterie, firing of, 528
Cock, Stocker's patent, 168

on a new plan, 345

ball, improved, 423; Abraham's 457,

458
Cockerill's, Mr. engineering establishment,
at Seraing, 192, 207

Daguerreotype. See Photgoraphy.
Davidson and Park's cassimere shearing
machine, 475

Daylight, variable intensity of, 72

De Breza's fire-proof composition, 181
Dent's chronometers, 143

Designs, new, registration of. See Registra-
tion.

Dextrine or starch, used as a varnish, 416
D'Harcourt's artificial granite, 79, 174
Ditchburn and Ware's, Messrs., improve-
ments in iron steam vessels, 448
Diving and subaqueous operations :
Reciprocating chamber, Steele, 34

submarine illumination, Steele, 88,
139, 411, 450

-, register of soundings, 83
operations on the Royal George, 109,
139, 411, 443

helmets and dresses, 443
Dock-yards, Government, improvements in,
176, 448

Dodd's, apparatus for curved sawing, 320
Door-spring, improved. Trevelyan, 4
Dovetailing machine, Holden's, 476
Dredge's, suspension bridge, Lord Western
on, 706

Dry-rot, Sir A. Carlisle on, 463

Duval's metal roofs, 140

Dye-woods, Besseyre's, method of obtaining
extracts from, 80; Kent's, 141
Dynamometer, Batchelder, 474

E.

electro-magnetic engine, nomenclature, 724
Electricity, on its supposed identity with che-
mical affinity, Prater, 178
of mill-straps, 256

on testing purity of substances,

by, 303
Emslie's plan of constructing railways, 438
Engineering, experience not always sufficient
for, 363

establishments, of Manchester,
189; of Mr. Cockerill, at Seraing, 192,
207; Russia, 304; Messrs. Fawcett & Co.
541

Engraving, Spencer's method of, by galva-
nic precipitation, 54

-, history of wood, 66

metallic relief, Woone's process,
66, called gypsography, and applied to
music, 256

Envelopes, formula for making, 537
Equatorials, regulation of the clock work of,

689

Ericsson's, Capt. latest improvements in the
steam-engine, 290

Escapement, Capt. Kater's new, 724
Espys' theory of rain, 208

Ethelston's money computation system,
348; fallacy of, 524

Evaporation of saccharine and other liquids,
Harris's process, 474

in cold air, 19

Exhibitions of arts and manufactures,
provincial, 224; Edinburgh, 240; Bos-
ton, (Mass.) 474

F.

Faber's patent wool-cards, 115

Fairbairn, Mr. W., experiments by, on
the strength of iron, 30

Fawcett, and Co.'s Messrs., engineering es-
tablishment of, 541

Felting, cloths made by, without spinning or
weaving, 527

Filtration of river water, plans for, 768
Finlay's steam-engine spark arrester, 473
Fire-arms, Smith's patent gun-carriage, 13
Adam's improvements in, 301
Fire, Duke of Buckingham's precautions
against, 48

-, society for protection of life from,
Wivell, 84; Baddeley, 86

Fire-engines in Birmingham and Dudley,
Baddeley, 84

hose reels for, 470

Fire-escapes, voluntary brigades, ladders,
&c., Baddeley, 47

and water-carts, Wivell, 84

Fire-preventive company, experiments on
the composition used by, 496

Fire-proof composition, De Breza's, 181
Fires, London, Annual Report of, by Mr.
Baddeley, 379

Flax spinning at Amiens, 255

-

New Zealand, cost of, 527