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16

Description of Brooman's Patent Dry Gas Meter-(with engravings)
The Transformation of Co-ordinate Planes in Descriptive Geometry. By Hugh Godfray,
Esq.

4. Bidder's Excavation Tables. By C. Creedy--(Review)

7 Advice to Mechanics on the Study of Arithmetic. By the Editor.

10 Messrs. Elsner and Philips' Process of Coating Iron and Zink with Copper, without Cyanuret of Potassium

11 Rhynd's Extemporaneous Safety Rafts

11 Description of Stace and Vallance's Horizontal Windmill-(with engravings)

12 Proofs that Heat is Ponderable. By Mr. G. Lloyd.

14 De Laguy's Approximation. Note by the Editor

14 The Electric Telegraph in America

15 American Opinions on Marine Steam Engines :Professor Renwiok's.

16 Mr. Kemble's Recent American Patents :Grimes' Spark Arrester

19 Day, Tyler, and Helm's Machine for Cutting India Rubber into Threads, or Strips

19 Timby's Re-action Water-Wheel

19 Wright's Machine for Boring the Cylinders of Rotary Steam Engines. 19 Babcock's Stove for Heating Apartments

19 Draper's Improvements in the Piano-forte

19 Burt's Improvements in the Power-Loom

20 Wendt's Improvements in Tailors' Shears

20 Brown's Improvements in Buttons on the Heads or Handles of Whips...... 20 Railway Progress.-Proofs that the Moon is not Inhabited.-A Narrow Gauge Monster. New Planet Ex, ected

21 Description of Taylor and Conder's Patent Electro-Magnetic Railway-(with engrasinjs)

26 The Screw and the Paddle. By Captain E. P. Halsted, R.N. Description of Mather's Patent Improved Metallic Piston-(with engravings) On the Supply of London with Water by Artesian Wells Is Heat Ponderable ?-Turkish Cement. By Dr. Prater. Examination of the " Proofs that Heat is Ponderable

35 Equations - Additional Remarks on the Subject of a late Communication of the Author. By J. Cockle, Esq., M.A.

36 Description of a Mode of Railway Propulsion up Inclined Planes. By Mr. W. Riddle -(with engravings).

37 On the Transformation of Co-ordinate Planes. By Hugh Godfray, Esq.-(Continued) 38 American Opinions on Marine Steam Engines :

Mr. Kemble's
Messrs. Merrick and Towne's

42
Screw Propelling - Mr. Gachet's Experiments
The Steamers of the Experimental Squadron--Terrible and Retribution
The Penny and Halfpenny Steamerg-Joyce's Application of Woolf's Engine to Marine

Purposes
Description of Clark and Varley's Resilient Atmospheric Railway-(with engravings).
The Tithe Commutation Surveys

51
Diamond Dust....
On the Transformation of Co-ordinate Planes. By Hugh Godfray, Esq.
The ** Proofs" that Heat is Ponderable. By Mr. Lloyd.
Note on the same Subject. By Dr. Prater
Mode of Preparing the Crimson Flame for Theatres. By Mr. E. Stamper..
German Science-Dr. Whewell's Architectural Notes on German Churches-(Review) 65

60 Experiments on Shot. By Sir George Cayley, Bart.-(with engravings)... Insolubility of Carbonate of Nickel in strong Acid. By Mr. W. Hart.. Professor Young's Three Lectures on the Advantages of Mathematical Study-(Review) The New Theory of the Prismatic Colours

Miniature Statunry-American Patents-- The Electric Telegraph in America Dr. Payerne's Bell Ship-Dr. Polt's Atmospheric System of Pile-driving - The New

castle Agricultural Meeting-Steamboat Luxury--The Atlantic and Pacific Canal

-Bain's Electric Clock - Immense Fiery Meteor-Iron Furnaces. Description of Boyardas's Universal Eccentric Mu for Holling, Cutting, and Grinding -(with engravings

[For continuation as third page of Wrapper,

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Description of Wennington's Patent Plate and Sheet Iron Cutting Machine-(with

engravings)...

97

Miscellanea Mathematica-Application of Algebra to Geometry

99

The Paddle and Screw. By Captain E. P. Halsted, R. N.

103

Explanation of the Floating of Cold Iron in Melted Iron

105

On Catalytic Force. By H. Prater, M.D...

106

The Magnetic Telegraph in America

106

Mr. Gachet's Screw Experiments....

107

Description of Clark and Varley's Resilient Atmospheric Railway-(with engravings) 108

Improvement in the Composition of Printers' Rollers. By Mr. Cresswell..

110

American Opinions on Marine Steam Eogines---Mr. Charles Copeland

110

Approximate Rectification of the Circle. By James Cockle, Esq., M.A.

116

Every Man his own Brewer

116

Native Copper-Carrier Pigeons-Carrier Dogs- The Euphonia--Beer by Post 117

Total Eclipse-Safety Letter Box-The "Great Britain'-The “Water Lily'—The

Royal Yachts ..

118

List of Scotch Patents

118

List of English Patents.

119

Description of Church's Patent Method of Manufacturing Cokem(with engravings).. 121

The Tithe Commutation Surveys .

127

Problems on Railway Cuttings. By T. S. Davies, Esq., F.R.S.

130

The Multiplication Table

134

On certain Formulæ relating to the Circle. By James Cockle, Esq., M.A..

134

Description of Wheeler's Patent Trilateral Rail - (roith engravings)..

135

Suggestions for Promoting Greater Security of Railroads. By Geo. Cumberland, Esq. 135

Recent American Patents:-

Isaacs and Raisbeck's Improvements in Anchors

136

Goodyear's Waterproof Manufacture

136

Dr. Hare's Hydro-Oxygen Blowpipe

137

Bullock's Improvements in the Platen of the Toggle Joint of Lever Presses 137

Hubbell's Propeller

137

The Gutta Percha Patents, No. VI.

Charles Hancock's Improvements in the Manufacture of Gutta Percha 138

Perpetual Motion-Vegetable Papers-Worthington's Tidal Power

141

List of Scotch Patents

142

List of English Patents

142

Description of Milligan's Patent Improvements in the Power Loom-(with engravings) 145

Bidder's Tables---Additional Formulee..

148

The Screw and Paddle. By Captain Halsted, R. N.

150

Description of a Hydraulic Intervener. By Mr. Gregory.

153

On the Application of Compressed Air as Motive Power. By Geo. Cumberland, Esq. 156

The Late Storms-Atmospheric Electricity..

157

On the Derivation of the Word Theodolite. By James Cockle, Esq., M.A... 159

Description of Greener and Staite's Electric Lamp..

160

Problems on Railway Cuttings. By T. S. Davies, Esq., F.R.S. London and Edin-

burgh, F.S.A..

162

Note on an Expression in Analytical Geometry, with Note by the Editor..

163

The Greatest Iron Gun ever Cast Yet - Manufacture of Locomotive Engines in Wales

-Submarine Flax-The Electric Telegraph-Cheap Travelling in America-West-

minster Bridge–The Smoke Prohibition Bill— The Wood Pavement Patents—The

Liebig Manure

164

List of English Patents

165

Description of Pilbrow's Atmospheric Railway--Farther Improvements-(with engrad.

ings,

169

Simple Mode of Making Oxygen Gas. By Mr. Alfred..

173

On Mensuration of Excavations or Earthworks, and Huntington's Tables. By J. W.

Woollgar, Esq.......

173

Canal across the Isthmus of Panama..

174

On the Law of Patents. By W. E. Staite, Esq.

174

Problems on Railway Cuttings. By T. S. Davies, F.R.S. London and Edinburgh,

F.S.A...

177

Description of White's Railway Link-(with engravinge)

180

181

Caual and River Navigation.-Captain Beadon's Warping System
Description of Ashenhurst's Registered Bolt for Mortice and other Locks-(wilk

engravings)..

Efficacious Razor Strop...

[Por continuation see third page of Wrapper.

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