JULY 3RD-DECEMBER 25TH, 1847.
EDITED BY J. C. ROBERTSON.
"There is no art or science that is too difficult for industry to attain to; it is the gift of tongues, and
makes a man understood and valued in all countries, and by all nations; it is the philosopher's stone that
turns all metals and even stones into gold, and suffers not want to break into its dwelling; it is the north-
west passage, that brings the merchants as soon to him as he can desire—in a word, it conquers all enemies,
and makes fortune itself contribution."-LORD CLARENDON.
MECHANICS' MAGAZINE OFFICE, No. 166, FLEET-STREET.
AGENTS: FOR EDINBURGH, J. SUTHERLAND;
GLASGOW, W. R. M'PHUN, AND DAVID ROBERTSON;
DUBLIN, MACHIN AND CO., 8, D'OLIER STREET;
PARIS, A. & W. GALIGNANI, RUE VIVIENNE;
HAMBURGH, W. CAMPBELL.
PRINTED AND PUBLISHED BY J. C. ROBERTSON, 166, FLEET STREET.
TO THE FORTY-SEVENTH VOLUME.
Abate's sewer trap, 20, 44
Accelerating force, 231, 309
Actinism, 457
Adcock's patent spray pump, 41,
256, 285, 315, 343, 366, 414, 500,
531, 552
Aerostation, 106, 140, 149, 243,
535
Air, tides in the, 17
--, compressed, locomotive,
Baron Von Rathen's, 93
Company, Parsey's,
536
Alcoholmeter, Field's, 479
Algebraicæ Horæ, by James
Cockle, Esq., M.A., Barrister-
at-Law, 13, 134, 150, 306, 331,
409
Alloys, 607
American patents, cost of, to
British subjects, 67
recent, 67, 234,
law case, Smith and
Sloat v. Mercer and Pechin, 79
locomotive, explosion of,
observations of the new
planet Neptune, 250
war steamers, new, 262
leather trade, 435
tapestry carpeting, 458
steamers, 559
Analytical geometry, chapters on,
by James Cockle, Esq., M.A.,
Barrister-at-law, 360, 433, 451
Anchor, flat, one-fluked, by J.
MacGregor, Esq., 11
Animal electricity, 17
-- and vegetable substances,
Horsley's improvements in pre-
serving, 631
Anthracite, on the use of in loco-
motives, by Professor Johnson,
411
Anti-friction, metal, Babbet's, 535
Archimedes screw, employment of
for pumping, 557
"Architectural maxims," by Pro-
fessor Donaldson, 224
Arctic expedition, 463
Arndt's patent "cloth moth har-
bour," 235
Articles of utility registered, lists
of, 23, 47, 71, 95, 119, 143, 167,
191, 215, 239, 262, 287, 320, 344,
368, 392, 417, 439, 464, 488, 512,
536, 560, 585, 609, 632
Ashbury's improvements in wash-
ing and amalgamating gold and
silver, 234
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minate coefficients, by Professor
Young, 574, 627
Biddery ware, 607
Blacksmiths' tuyeres, Grannis's
improvement in, 460
Blast-furnaces, Yate's patent, 20
pipes, locomotive engine, 549
Bleached linen-yarns, drying, by
Davison and Symington's pro-
cess, 558
Bleaching and scouring, Broo-
man's patent improvements in,
563
Blewitt, R. J., Esq., M.P.; state-
ment of the experiments with
Adcock's spray pump, 533
patent improvements
in malleable iron, 552
Bobbin-cutting machinery, Lar-
rard's improvements in, 606
Boiler explosion at Rochdale, 456
explosions, causes of, 547
Boilers, tubular, Fossick, Hack-
worth and Elliott's, 241
--, experiments on the scales of,
554
Bolts, clenching, 583
Bonnets, tortoise-shell, 213
Boots and shoes, Hart's machine
for lasting, 460
Boring apparatus, Fauvelle's, 463
Bourne's "Catechism of the Steam-
engine," 476
Bowman's experiments on the re-
lative strength of cast iron,
chilled and unchilled, 520
Brace, eccentric lever, Fenn's, 276
Bracket girder, Dredge's, for
bridges, &c., 60, 133, 380
Braithwaite's patent improve-
ments in heating, lighting and
ventilating, 217
Break, railway, Mr. George Ste-
phenson's, 274
-, Tibbit's patent, 371
Brett and Little's patent improve-
ments in electro-telegraphy, 185
Brett's, Jacob, patent electric
printing telegraph, 11
Bricks, tiles, &c., Cox's process
for preserving, 600
Britannia tunnel over the Menai
Straits, 176
Bridges: Dredge's balanced
bracket girder, 60, 133, 300; in-
vestigation of the strength of
girders, by W. Dredge, Esq.,
C.E., 101, 205, 332; remarks on
Mr. Dredge's paper, 152, 220,
429; skew piers, 132; the Bri-
tannia tunnel over the Menai
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