DECEMBER 25TH-JUNE 24TH, 1848.
EDITED BY J. C. ROBERTSON.
"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.
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-EIGHTH VOLUME.
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
- 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
Biram's improved tell-tale, 121 Birkmyre's patent improvements in smelting copper and other ores, 500
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
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,
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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