Grounsell's drop drill, ib.

Salter's corn dresser, ib.

Jones and Draper's scorcher, ib.
Alger's patent plough, 115

Grounsell's patent corn and manure
drill, 225

machinery for drying grain, 336

steam ploughing, 566, 676, 691

Air and steam-engine, 159

Airy, Professor, on the regulators of clock-

work of equatorials, 689
Alkali manufacture, 752

Alverson's railway springs and buffers, 140
Alloys, yellow metal (Muntz's), 31; re-
marks on, 74-

-, (Cutler's) of iron, copper, and nickel,
237

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