Page

7

11

14

16

19

20

27

34

36

42

51

51

53

54

Miniature Statuary-American Patents--The Electric Telegraph in América .... 67

Dr. Payerne's Bell Ship-Dr. Pott'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 Farnaces..

Description of Bogardus's Universal Eccentric Mill for Hulling, Cutting, and Grinding

-(with engravings......

[For continuation see third page of Wrapper.

CONTENTS OF PART CCLXXXIII.

Page

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

engravings)......

Miscellanea Mathematica-Application of Algebra to Geometry

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

97

99

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..

American Opinions on Marine Steam Engines-Mr. Charles Copeland

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

Every Man his own Brewer

110

110

116

116

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

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

Royal Yachts..

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

The Tithe Commutation Surveys

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

The Multiplication Table ..

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

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

127

130

134

134

135

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

Recent American Patents:-

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

Hubbell's Propeller

137

Charles Hancock's Improvements in the Manufacture of Gutta Percha

138

Perpetual Motion-Vegetable Papers-Worthington's Tidal Power

141

List of English Patents...

List of Scotch Patents

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

Bidder's Tables-Additional Formulæ..

142

142

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

Description of a Hydraulic Intervener. By Mr. Gregory..

148

150

On the Derivation of the Word Theodolite. By James Cockle, Esq., M.A.........
Description of Greener and Staite's Electric Lamp..
Problems on Railway Cuttings. By T. S. Davies, Esq., F.R.S. London and Edin-
burgh, F.S.A.....

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

The Late Storms-Atmospheric Electricity..

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

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

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

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

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

Canal and River Navigation.-Captain Beadon's Warping System

Description of Ashenhurst's Registered Bolt for Mortice and other Locks-(with

Description of Pilbrow's Atmospheric Railway-Further Improvements-(with engrav-

ings,

165

169

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

Woollgar, Esq..

173

173

174

174

177

180

181

182

Efficacious Razor Strop..

182

[For continuation see third page of Wrapper.