LIST OF PLATES. 
xvii 
PLATE 
EXPLANATION. 
PAGE 
xviii. Isometrica! projection of a steam boat engine, as? first arranged by Boulton 
and Watt ..... 
. 
347 
xix. Section and plan of steam boat engine 
. 
349 
xx. Side elevation and cross section of a steam carriage 
• . 
350 
xxi. Kingston’s valves ...... 
• • 
353 
blow off valves ...... 
# , 
ibid 
injection valves ...... 
• . 
ibid 
hand pump valves ...... 
354 
3N. 
^GE 
xxn. Boilers of H. M. steam vessel African 
. 
355 
528 
xxiii. Boilers of H. M. steam frigate Medea 
. . 
ibid 
529 
xxiv. Paddle wheels of Morgan and Seaward 
. 
357 
530 
xxv. Positions of a float of a radiating wheel; and also of a vertical acting wheel; in 
531 
a vessel in motion ...... 
. 
ibid 
532 
xxvi. Cycloidal paddle wheel fitted to the Great Western 
. 
ibid 
533 
xxvii.j xxviii. Illustrate Capt. Oliver’s paper 
• 
358 
334 
xxix. Exhibits the various situations of a trial at sailing of the Medea; with the 
335 
Caledonia; Vanguard; and Asia .... 
. Appendix 
100 
337 
xxx. Side view of the engines of the Red Rover, and City of Canterbury, steam 
vessels ....... 
. 
358 
338 
xxxi. Longitudinal section of ditto .... 
. 
359 
xxxii. Cross section of engines of ditto .... 
• 
360 
339 
xxxiii. Side elevation of the engine of the Nile steam ship 
• 
361 
340 
xxxiv. Plan of the engine of the Nile .... 
• 
ibid 
341 
xxxv., xxxvi. Cross sections of engines of the Nile 
• 
362 
342 
xxxvii., xxxviii., xxxix. Engines of H. M. steam frigate Phoenix 
• 
363 
343 
xl. Engines of the Ruby Gravesend packet 
• 
364 
345 
xli. Section of one of the engines of the Don Juan Peninsula Company’s 
packet . 
368 
ibid 
xlii. Boilers of H. M. ships Hermes, Spitfire, and Firefly 
c 
• 
ibid 
346