Description of a Plan for Ventilating Mines by Air-pumps. By Mr. P. Halliday
On Circulating Decimals. By Mr. Anthony Peacock
On the same. By G. C. L.
On the same. By a Country Teacher
On the Experimental Data requisite to determine the Limits of Railway Velocity
and Economy. By Iver M Iver
Remarks on Tuning Musical Instruments, and Proposal of a new Mathematical Divi-
sion of the Scale. By Corio....
Suggestions on Widening Blackfriars-bridge. By a Citizen.
Proposal of a Petition to Parliament on the Subject of British Museum Duplicates.
By S. S.
On the Supply of Electric Currents to Plants. By Mr. W. F. G. Waldron
Suggestion of a Mode of Preserving Copper-sheathing. By Mr. J. F. Olander
Description of an Improved Paddle-wheel, with Remarks on other Paddles. By Mr.
T. S. Mackintosh
Description of Merryweather's Fire-engine Branch-pipe. By Mr. W. Baddeley
Remarks on the Literary Institutions of the Kingdom, and on the Improvement of the
British Museum. By P, P. C. R.
Note on Dr. Fox's Turn-cap for Ventilation. By C.
Note of an apparent Phenomenon in Railway Velocity. By Trebor Valentine
Description of a Mercurial Safety-pipe, Self-acting Damper, and Pressure-gauge for
High-pressure Boilers. By Mr. Edward Bunting
Note on Hansom's New Safety-cabs
List of permanent Provincial Institutions, Libraries, and Museums. By S. S.
Analytical Notices of Recent Specifications. Thomas Walker-Self-extinguishing
Candlesticks. James Kean-Throstle-Flyer. Wm. Busk-Propelling Vessels.
John Rogers-Paddle-Wheels. Rev. F. H. Maberly.-Propelling Vessels
Description of Hebert's Patent Domestic Flour-maker
Examination of the Claims of certain Provincial Institutions to be considered Per-
manent, and Observations on the Improvement of the British Museum.
Notice of Meetings of the Institution of Civil Engineers and Reports upon Hunter's
Stone-planing Machine
On Mr. Mackintosh's Electrical Theory of the Universe. By Ursa Major. 92, 313,
Strictures on Mr. Barry's proposed New Houses of Parliament, and on the Metro-
politan Improvements. By P. P. C. R.