244 



INDEX. 



Plate 42. Betters of H. M. ships Hermes, 



Spitfire, and Firefly . . 368 



Plates 43, 44, 45, 46. Elevation, plan, and 

 two sections of the engine room of the 

 armed Russian steam ships Jason and 

 Colchis . . . 369 



Plates 47, 48. Hall's improvements on 



steam engines . .370 



Extracts from his specifica- 

 tion . . . ibid 



Plates 49, 50. Engines of H. M. steam ship 



Megaera . . . 378 



Action of the valves . 380 



Plates 51, 52, 53, 54. Engines of the Hull 

 and London steam packet William Wil- 

 herforce . . . 382 



Plate 55 (A). Longitudinal section of Hum- 



phrys's patent marine engine . 390 



Plate 55 (B). Longitudinal elevation of 



Humphrys's engine . .391 



Plate 56 (A). Midship section of the steam 

 packet Dartford, showing a front 

 elevation of a pair of Humphrys's 

 engines . . . ibid 



Plate 56 (B). Plan of the engines of the 



Dartford . . .392 



Plates 57, 58, 59. Forty-five-horse power 

 engine, constructed by W. Fairbairn 

 and Co. . . . ibid 



Plates 60, 61, 62, 63. Ten-horse power en- 

 gine, constructed by W. Fairbairn 

 and Co. . . . ibid 



Plate 64. Elevation of a locomotive engine. 

 Stanhope and Tyne Railway ; con- 

 structed by Messrs. R. Stephenson 

 and Co., of Newcastle-upon-Tyne 394 



Plate 65. Section of ditto . .396 



Plate 66. Safety valves of ditto . ibid 



Plate 67 (A). Cylinder cover and connect- 

 ing rods of ditto . . 397 



Plates 67 (B). Cylinder and piston at large 



of ditto . . .398 



Plate 68. Plan and section of boiler seating 

 for a twenty-horse engine, at the ma- 

 nufactory of Messrs. Whitworth and 

 Co., Manchester 399 



PAGE 



Plate 69. Messrs. Hague's double acting 



cylinder with slides . . 399 



Plates 70 A, 70 B. Sections of the engines 



of the Berenice steam vessel . 400 



Plates 71, 72. Beale's patent rotatory en- 

 gine . . . 401 



Plate 73. Mr. Ayre's contrivance for pre- 

 venting a locomotive engine from run- 

 ning off a railway . . 403 



Plates 74 to 83. Relate to Mr. Mornay's 



paper on paddle wheels . App. 117 



Plates 84 to 88. Sixty-five inch cylinder 

 engine, erected by Messrs. Maudslay, 

 Sons and Field, at Chelsea water- works 



404 



Plates 89 to 92. Patent locomotive engine, 

 made by Messrs. R. Stephenson and 

 Co. for the London and Birmingham 

 Railway . . .407 



Plate 93. Drawings of the Comet, the first 



steam boat in Europe . .470 



Plate 94. The Pacha's steam vessel of war, 



the Nile . . .471 



Plates 95, 96. The Hon. East India Com- 

 pany's steam vessel Berenice . ibid 



Plate 97. Draught of the Forbes steamer 473 



Plate 98. Herne Bay steam packet Red 



Rover . . . 474 



Plate 99. Diamond Company's steam packet 



Ruby . . .475 



Plates 100 to 103. Her Majesty's steam 



vessel of war Medea . . 477 



Plates 104 to 107. Construction of the Nile 



steam ship, built for the Pacha of Egypt 483 



Plates 108, 109, 110. His Imperial Ma- 

 jesty's armed steam vessel Colchis 492 



Plates 111, 111 (A). Engines of the steam 



ship Tiger . . .497 



Plate 112. The Admiralty yacht Firebrand 498 



Plate 1 13. Portrait of the late Mr. Watt 500 



Plate 114. Portrait of fee late Mr. Tredgold ibid 



Plates 115, 117, 118. Illustrate the state of 



steam navigation in America . ibid 



Plug tree . . .224 



Poisson . . . . 86, 291 



Portable engine . . . 22, 28, 38 



