2

CONTENTS.

Pagr

Gravity employed as self-acting Planes . . 93

Fixed Steam-engine Planes . . .108

Loco-motive Engines .... 123

Trevithic and Vivian’s . . 125

Blenkinsop’s Engine . . 128

Messrs. Chapman’s Engine . .130

Brunton’s Engine . . .131

Blackett’s Engine . . .134

Stephenson’s Engine . .136

Description of the Killingworth Engines 145Wylam Engines . 154

CHAPTER V.

Experiments on the Strength of Rails . .157

Cast-Iron Rails , . . .161

Malleable Iron Rails . . . 166

CHAPTER VI.

On the Friction and Resistance'of Carriages . 169

Mr. Grimshaw’s Experiments . . . 174

Experiments with the Dynamometer . .185

Table of the Resistance with respect to Weight . 194

----—--Velocity . 197

Experiments on the Resistance upon the Plate-Rail . 201

CHAPTER VII. .

On the Friction of Ropes on Inclined-Planes . 202

Self-acting Planes . . 204

Fixed Engine Planes . . 209

Table of the Result of Experiments . .214

CHAPTER VIII.

On the Performances of the different Kinds of Motive

Power .... 220