the world.--_The Engineer_.

[Illustration: 1000 HORSE POWER CORLISS ENGINE.--BY HICK. HARGREAVES &
CO.]

_Result of Trials with Saltaire Horizontal Engine on February 14th and
15th, 1878. Trials made by Mr. L.E. Fletcher, Chief Engineer Steam
Users' Association, Manchester._

Engine single-cylinder, with Corliss valves. Inglis and Spencer's valve
gear. Diameter of cylinder. 30in.; stroke, 8ft.; 45 revolutions per
minute.

No. of trials
Total 1.H.P.
[MB] Mean boiler pressure.
[MP] Mean pressure on piston at beginning of stroke.
[ML] Mean loss between boiler pressure and cylinder.
[MA] Mean average pressure on piston.
[W] Water Per I.H.P. per hour.
[C] Coal per I.H.P. per hour.

No. of trials Total MB MP ML MA W C
I.H.P. lb lb lb lb lb lb
Trial No. 1. 301.89 46.6 44.11 2.53 21.23 18.373 2.699
Trial No. 2. 309.66 47.63 44.45 3.18 21.67 17.599 2.561
Means. 305.775 47.115 44.28 2.855 21.45 17.986 2.630

[Illustration: 1000 HORSE POWER CORLISS ENGINE.--BY HICK, HARGREAVES
& CO.] [Illustration: 1000 HORSE POWER CORLISS ENGINE.--BY HICK,