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CONTENTS.

ORIGINAL CONTRIBUTIONS.

PAGE

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On the same. By Zeta

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Suggestion of a Lady's Marine Life-preserver. By Campo-Bello.
Papers on the Superiority of Cornish Steam-engine Work.
Dickson, C. E.

By Mr. J. S. Enys, of Enys

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On the Connexion between Electricity and Vegetation. By Mr. Thomas Pine
Suggestion of a new Mode of Heating Bookbinders' Lettering Tools. By Mr. T.
Coggan

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Remarks on Hale's Hydraulic Apparatus. By Mr. Allan Mackenzie

Comparative Railway Table

Description of Mordan and Co.'s Triple-pointed Pens, and Remarks on Steel Pens in
general. By Mr. W. Baddeley

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On Aerial Locomotion by Means of Birds. By Kenans

Description of an Improved Mode of Sharpening Scythes. By Colonel Maceroni
Description of Hutchison's Patent Gas-retort Bed. By Clovis

Practical Suggestions on the Working of Inclined Planes and Canal Locks. By the

Rev. Robert Carey, Rector of Donoughmore, Clonmel

Strictures on the Steam-carriages Tolls' Bill

On Chemical Tests for the Detection of Arsenic. By Henry M. Noad, Esq., Surgeon
Description of the Greenwich Safety Railway Carriages. By Mr.W.J. Curtis, Engineer
Note on the Silica Soap, and Washing with Pipe-clay. By J. S.
Description of Stephens's Improved Fountain Ink-stand, and Remarks on the Manu-

Notice of Stirling's Ornamental Plate Manufacture.

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33 tatement of a new Theory of the Tides. By Mr. Alexander Clark, Engineer
57 escription of an Ancient Guu, with revolving Breech. By Mr. John Thomas

tion of Mr. Millard to the House of Commons, on the Reform of the British
Museum.

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on the Parliamentary Grant for a National School of Design

ptice of Webster's Otophane; or Patent Invention for assisting the Hearing.

98 By W.

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366
ib.

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Hint which may be Useful when Magnetic Locomotives are in Use. By Tyro Mechanicus 412

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Description of Brunton's Patent Gas-retorts

450

On the Tractability of Balloons, and on the Comparative Safety of Montgolfier and
Gas Balloons. By Colonel Maceroni

458

Experiments with Captain Ericsson's Deep-Sea Lead..

450

On the Existence of Constant Currents of Wind at High Altitudes. By Mr. Vincent
Brown

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On the Cultivation of the Potatoe in India
Evidence of Dr. Reid before Parliamentary
Committee on Ventilating the Houses of
Parliament

ib.

50

69

78

Description of an Iron Su-pension Bridge con-
structed over the Beose River, near Sagar,
Central India. By Major Presgrave
Evidence of Dr. Reid before Parliamentary
Committee on the Application of Acoustics
to the Houses of Parliament
Account of the Manufacture and Tempering of
Sword-blades in the Province of Cutch

Report of Experiments made by a Committee

of the Franklin Institute of Pennsylvania on

the Explosions of Steam-boilers, at the re-

quest of the Treasury Department of the

Toited States, we vo
8114, 160, 185 205
Use in Smelting Iron..

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249

254

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