A.

Achromatic microscope, Dr. Goring's, 188
Air, effect of, in heating liquids, 463

and vapour light, Beale's, 399, 416
Air-saddle, patent, 336, 400.
Airy, Professor and the chronoineter prizes,

359, 413, 432
Alum manufactories in Britain, 47
America, civil engineering Stevenson's,

57, 213
American steam boiler explosions, act to
provide for experiments on, 13

steam navigation. See Steam
Navigation.

locomotives, 192
Anderson's, Sir James, steam carriage, 8,

64, 80, 182, 207, 216, 263, 304, 383
Angler's, gut lines, manufacture of, 41, 54
Anti-dry-rot process, Kyan's 336.
Apples, mashing and steaming, Dimm's

machine for, 379
Archimedes steam vessel, 63
Architects Manual, Davy's, 60
Arkwrights, wealth of the, 209
Armstrong's improved water-wheel, 202
Arnott's, Dr., stove, 239, 304.
Arsenic, poisoning by, 95
Artesian wells, metropolitan, 224, Paris 272
Artificial foundations, Davy's Treatise on, 60
Artizan's, intellectual tastes in, 10
Asphaltes, experiments on various, 48
Asphaltum-pavements, 96, 229, 236, 302
Astronomical tables, Utting's, 83, 102
Atmosphere, distribution of the, 171

resistance of the, to railway
speed, 244, 266, 297, 300, 301, 362

equilibrium of the, Brayley's
lecture on, 447
Atmospheric engine, Savery's, experiments

with, 284
Aurora borealis in November 1838, 307
Australian museum, 95
Austrian “ Lloyd's," 112

government, discouragement of
science by the, 47
Axletrees, of carriages, &c., Durkee s patent,
381

B.
Baddeley, Mr. William ; on various fire-

escapes, 2, 43; on locomotive engines
with toothed gear, 30; on English and
French fire engineering, &c., 41; on Sir
J. Robison's mountain barometer, 51;
on the proper source of food for nian, 67,
131 ; on plans for the destruction of
smoke, &c., 69; on propellers for steam

vessels, 82; on Penny's improved cannon,
114; ancient fire engines-hand squirts,
&c., 115 ; on Pistrucci's improved sculp-
tor's banker, 129; Mrs. Smith's smoke
consuming stove, 133 ; on the use of Har-
per and Joyce's patent charcoal and stoves,
186; Coles's anti-friction wheel carriages,
230; French fire-escape ladders, 248;
mode of reading off the gas meter, 250;
report of London fires in 1838, 306, 450;
portable dam or cistern, 318; break joint
for fire ladders, 397; supply of water to

the metropolis, 423
Badnall's undulating railway, 245
Ball-valves, Crockford's, 281
Ballot, Juckes's mode of voting by, 168
Bands, machine, improved mode of connect-

ing, 291
Banker for sculptors, Pistrucci's improved,

129
Barometer, mountain, Sir John Robison's,

51
Barometers, public, proposal of, 30, 52
Barron's patent locks, 70
Bathing, benefits of, 242
Battle-gunpowder, analysis of, 334
Bayley, Mr. George, on steam navigation to

India 53; on the steam navigation of
America--and construction of steam

vessels, 213.
Beale's, Mr. J., air and vapour lamp, 399,

416 ; improved caoutchouc, 427
Beck's mode of lighting gas lamps by elec-

tricity, 407
Bell's, smoke consuming plan, 106
Berndson's, improved pump bucket, 56
Berzelius, experiments of, on heat, &c.,

295
Bird, Dr. Golding, on Harper and Joyce's

stove, 147
Bitumens. See Asphaltum.
Black ink, manufacture of, 303
Blasting rocks, premiums for experiments

in, 46
Blocking boots, French mode of, 218
Blood painting, Sir J. Robison on, 480
Birch's prize drawing of Huddart's rope

machinery, 333
Blooms of iron, manufacturing, 469
Blue-dye, new, 288
Boats, caoutchouc life, 151
Boiler. See Steam Boiler.
Boilers, salt, mode of cleansing, 94
Bones, exportation of, Russian, 159
Bookbinding, descriptions of, various modes

of, 108