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THE

MECHANICS' MAGAZINE,

MUSEUM,

Register, Journal,

AND

GAZETTE,

DECEMBER 25TH-JUNE 24TH, 1848.

EDITED BY J. C. ROBERTSON.

VOL. XLVIII.

"Objects of utility, not amusement, are now the things which command the attention of the scientific
world. The metaphysicians of old occupied themselves in discussing the possibility of two spirits occupy-
ing the same place in the same space of time, or the divisibility of spirit. The philosophers of the present
age confine themselves to the divisibility of matter-what they can see with their eyes, hear with their
ears, and handle with their hands. The spirit of investigation now directed in a right manner-in the true
Baconian spirit-traces effects to their causes, and never looks upon a result as worthy of consideration,
unless the world in some manner is benefited; and the world now, embraces not only princes and patri-
cians, but also mechanics and artizans."-PORTER.

LONDON:

ROBERTSON AND CO.,

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.

1848.
LIBRARY

UNIVERSI OF CALIFORNIA

PRINTED AND PUBLISHED BY J. C. ROBERTSON, 166, FLEET STREET.

INDEX

TO THE FORTY-EIGHTH VOLUME.

Accordions, 141

Achromatic lenses, double, 69, 93
Acid carbonic, liquid, 237

-, sulphuric, 165

Adcock's spray pump, 45, 92, 130
Aeronautic machine, Ruijter's, 333
Agrometers, Godfray's, 169
Air streams of the Puna, 319
Air-tight cases and jars, 498
Airy's (Professor) wave theory,
578

Alarms, Rutter's patent, 36
Algebraic equations, Notes on the
theory of, by James Cockle, Esq.
M.A., Barrister-at-Law, 230, 511,
537, 605

on the general
solution of, by Professor Young,
101

Algebraicæ, Hora, by James Cockle,
Esq. M.A., 19, 181
Allen and Noyes's patent stuffing-
boxes, 116
American patents, recent, 92, 115,
522, 548

- law case, sculpturing by
machinery, 89

Gould, 356

Washburn u.

- pork trade, 468
steamers, 597
telescopes, 347

American patent system, Report
of the Commissioners of Patents
for 1848, 612

Anastatic printing, 189
Analytical and geometrical studies,
comparative advantages of, 325,
337

geometry, chapters on,
by James Cockle, Esq. M.A., 82,
102

trigonometry, easy in-
vestigation for a general theorem
in, by Professor Young, 367
Annandale's plan for extinguishing
fires, 139

Antimony, white paint from, 285
Archimedian balloon, Pitter's, 553
screw, 237

Armstrong's hydraulic engine, 597
Ark, the, 237

Articles of utility, registered
designs for, 23, 71, 94, 118, 142,
166, 190, 214, 238, 262, 286, 310,
334, 358, 381, 406, 454, 478, 502,
526, 550, 574, 598, 622
Atkin's cupper's horizontal scari-
fier, 54
Atmosphere, height and tempera-
ture of, 255

[blocks in formation]
[blocks in formation]

Biram's improved tell-tale, 121
Birkmyre's patent improvements
in smelting copper and other
ores, 500

on

Bishop's patent boom-derricks, 90
Bit, expanding rose, 420
Blackfriars-bridge,érroneous state-
ment respecting, 429
Bland's plan for the suppression of
spontaneous combustion
board of ships, 273
Bleaching, Sandeman's patent cold
and thermal processes of, 162
Blowpipe, workshop, Sir John
Robison's, 46
Herapath's universal

coal gas, 416
Bodies, Boutigny's spheroidal state
of, 299

-, falling, deviation of from
the perpendicular, 485, 488

-, weights and specific gravi-
ties of, instrument for ascertain-
ing, 558

Boiler incrustations, 46

-, steam, Craddock's patent,
449

Bolt, Steiger's spiral, 138
Boom-derricks, Bishop's patent, 90

Barlow's hollow piston steam- Boot crimping-tool, Taylor's, 525

engine, 524

Barometer, fountain, 286
Barber, John T., Esq., on the
coming comet, 186, 235; elec-
tricity of excited paper, 203
Battery, new galvanic, 237

Boring cylinder machine, Beyer's,

232

and sinking machinery,
Gard's patent, 433

Boswell's hydro-pneumatic ele-
vator, 345

Grove's, new exciting fluid Boutigny's definition of the sphe-
roidal state of bodies, 299
Boutigny and Hutins' process of
preserving wood, 498.
Bowman, R. Esq., on the strength
of iron chilled and unchilled,
85

for, 300
Bay-leaf teeth, 237
Beams and girders, fron; Dredge's
improvements, 8; Fielder's, 477.
Bache, De la Sir Henry, and Dr. Lyon
Playfair, first report by, on coals
suited to the royal steam navy,
304, 322, 350, 368, 402, 418
Becquerel's new method of bronz-
ing, 349

Belgian patent law, radical reform
of, 78

Bentham, Sir Samuel; plans for
seasoning and drying timber,
226; on naval construction, 507,
530
Bentley, Mr. C.; simple compen-
sating pendulum, 420; ignition
of spongy platinum, 450
Beyer's cylinder boring machine,
232

Boura's patent colour-extracting
apparatus, 211
Braiding, 429

Bramah, the inventor of the hy-
draulic telegraph, 321
Bread, how to prevent sourness
in, 11
Breakwater, Plymouth, Historical,

Practical, and Theoretical ac-
count of, by Sir John Rennie
(review) 421
Bridges, Dredge's iron, 622
Blackfriars, 429

Conway tubular, 117, 255
-, iron, Sunderland, 116

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