Description of an improved Iron Lighthouse. By Mr. John Lake ..
Report of Mr. Mackintosh's Lectures on his Electrical Theory of the Universe. . 9, 32, 47,
62, 95, 111
Description of Gregory's improved Window-cleaner and Fire-escape. By Mr. W.
Correspondence on the Systems of Condensation patented by Mr. W. Symington and
Mr. T. Howard :--Mr. Symington's Letters, 15, 119, 219; Mr. Howard's.. 60, 150
Description of Mr. Braithwaite's Steam Floating Fire-engine
Remarks on Mackintosh's Electrical Theory of the Universe, and Outlines of another
Theory. By Col. Maceroni ...
Further Elucidation of his Galvanic Theory, by Col. Maceroni.
40, 108, 434
On the Work performed by Steam-engines in Cornwall. By J. S. Enys
On the same. By Mr. J. Dickson, C. E. ..
On Witty's Patent Lamellar Bars and Segmental Trusses, and their application to
Notice of a Mode of propelling Balloons in any Direction, invented by Mr. W. Bad.
Description of Mr. Wilkinson's Alarm Rocket. By Mr. W. Baddeley
Suggestion of a new Plan for taking the Votes in the House of Commons
Description of Jones's Wrought Iron Wheels for Locomotive Engines and Railway
Carriages. By Mr. W. Baddeley
Observations on Mr. Exley's new Theory of Physics. By Benj. Cheverton, esq. .
Notice of a Mode of propelling and directing Balloons, invented by Signor Andervolti. 57
Description of a Mechanical Method of teaching and examining Music, by the Use of a
Sliding Rule. By Mr. W. Andrews, of Ivenhoe ..
On Manumotive Carriages. By Mr. W. Baddeley
On Circulating Decimals. By G. C. L...
Description of Hutchison's Registering Gas and Water Valve. By Ensor.
Description of Chalklen and Bonham's Patent Vice. By a Blacksmith
Proposal of a Question in Interest. By 0. C. F...
Solutions of, by an Old Correspondent, 118; by 0. C. W.
On the Progress of the Thames Tunnel
On Mr. Mackintosh's Electrical Theory of the Universe, by Kinclaven, 99, 215, 366,
473 ; by Mr. Pine, 102; by Nautilus, 222 ; by S. W. S., 350 ; by Mr. Joshua
Thorne, 405 ; by a Country Teacher
Further Elucidation of the Electrical Theory, and Answers to Opponents. By Mr. T.
118, 281, 346, 500
Suggestion of a Mode of preserving the Gas of Ballons, and using Carbonic Acid Gas
for Ballast. By Mr. R. Munro
On the first Excitement and Germination of Plants, with Remarks on the Franklinean
Theory, and that of Mr. Mackintosh. By Mr. T. Pine
Reply to Dr. M'Cormac on the invention of the Rotary Printing Apparatuś. By Row-
land Hill, Esq.
On the Transmission of Sound to great Distances
Description of a Fire Extinguishing Apparatus, and Fire-escape. By Capt. Smith, R. N. 114
Correspondence on the working of the present Fire Insurance System, and the rela-
tion between the Companies and the Public :-Letters by P. R., 116, 217, 288 ;
by Mr. W. Baddeley, 157, 227, 261 ; by Fire-Fury, 179, 227, 303; by Aquarius.. 263
Strictures on M. Quesney's new System of Geology. By O.N.
On the Same. By Kinclaven
Description of Hutchison's Numeroatus, or Iron Tally-man, for registering the Delivery
of Coals. By Ensor
Description of an improved Tailor's Work Table. By Mr. T. R. Croft .
An Essay at perpetual Motion, by Mr. T. S. Mackintosh.
Remarks on the Trials of Collier's Patent Steam Boilers
Notice of a case of Defective Vision, by W., 154 ; by Mr. Geo. Johnston
Suggestions on Æerial Locomotion. By Mr. W. Ranwell