731 
The Trials of Oil Engines at Cambridge. 
be desired. In economy over short periods and at light loads it 
is scarcely equal to some others, but at lull load over longer 
periods it is by very little surpassed by any. 
Fig. 23.— Crossley Brothers’ Fixed Engine. Trial with Broxbourne Oil. 
Volume swept through by Piston. Vertical Scale f 1 j . 
Fig. 24. — Hornsby’s Fixed Engine. Trial with Broxbourne Oil. 
Volume swept through by Piston. Vertical Scale | 5 . 
Messrs. Crossley’s engine has surpassed all others in economy 
at full power. It has also a very low consumption for longer 
periods and lighter loads. In regularity and steadiness of run- 
