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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
ROBERTSON AND CO.,
AGENTS: FOR EDINBURGH, J. SUTHERLAND;
HAMBURGH, W. CAMPBELL.
TO THE FORTY-EIGHTH VOLUME.
Atmospheric resistance, law of, Bichromate of potash, Jaquelain's
economical process of making,
railway system, 285 428
Aurora Borealis seen at Cambridge, Biram's improved tell-tale, 121
in smelting copper and other
Bishop's patent boom-derricks, 90
Blackfriars-bridge, erroneous state-
Axle, railway carriage, grease, 526 ment respecting, 429
board of ships, 273
Bleaching, Sandeman's patent cold
Babbage's, Mr., pet post-bags in and thermal processes of, 162
Blowpipe, workshop, Sir John
(review) 133, 165
Bodies, Boutigny's spheroidal state
Ballancing the wheels of locomo -, falling, deviation of from
, weights and specific gravi-
ties of, instrument for ascertain-
Ball's portable suspending revolv. ing, 558
Boiler incrustations, 46
-, steam, Craddock's patent,
Bar iron, Melling's machine for 449
Bolt, Steiger's spiral, 138
Boom-derricks, Bishop's patent, 90
Boring cylinder machine, Beyer's,
and sinking machinery,
comparative advantages of, 825, tricity of excited paper, 203 Boswell's ydro-pneumatic ele-
roidal siate of bodies, 299
Boutigny and Hutins' process of
in, by Professor Young, 367 Bache, De la Sir Henry,and Dr. Lyon of iron chilled and unchilled,
suited to the royal steam navy, Boura's patent colour-extracting
Bramah, the inventor of the hy.
Bread, how to prevent sourness
designs for, 23, 71, 94, 118, 142, seasoning and drying timber, Breakwater, Plymouth, Historical.
count of, by Sir John Rennie
Bentley, Mr. C.; simple compen (review) 421
iron, Sunderland, 116