145 50 metres steel trough slung from girders on brick piers. An illustration of this is given.

The measuring weir situated in close proximity to the main canal is two metres in width, and delivery records are accurately made by a self-recording gauge. This is found to be a great improvement on the old type of hook gauge, as any variation of delivery can be immediately detected and corrected, and the times of starting and stopping the pump can be checked.

The first trial of this unit was held on October 3rd, 1914, and was Hmited to the determination of fuel consumption only. The river being in flood, the Hft was small, and the W.H.P. developed correspondingly low. It was also discovered during the trial that the suction inlet area was restricted, thus allowing the pump to draw in air.

' ' First Trial of Plant No. 2, Shambat.

Date Duration of trial ... Kind of fuel used Total fuel fired Fuel fired per hour Steam pressure at boilers Steam pressure at engine Revolutions per minute Average vacuum ...

Average weir reading Average discharge of pump ...

Average discharge of pump Lift of pump ... ...

Water Horse-power Fuel per W.H.P. per hour Cost per W.H.P. per hour Cost per 1,000 m. water delivered A second trial was made seven days after to determine the plant's performance when using coal fuel, and results clearly demonstrated the economy effected by the use of wood fuel, the actual saving being 46 per cent.

As before stated, the relative costs of coal and wood delivered at site are £E.3, and 500 milliemes respectively.

Oct. 3rd, 1911