tOUR FROM SOURABAYAj THROUGH KEDIRI, &C. 77 
the Post station at Wono Sari, at the 26th paul, is a respect¬ 
able river; it decreases towards Balung Rendo, in conse¬ 
quence oi' being diverted for cultivation; this river is now 
followed* along its right bank, to its source in the Porong 
branch of the Kediri river, at the sluice of Melirip. At 
about the 29th paul is passed Wiongo, the abode of the 
Tumunggeng Dawuon, or chief of the water works, expressly 
appointed by government to superintend and direct the dis¬ 
tribution of water, but whose most important task has ceased 
since the construction of the sluice of Melirip, in place of 
the rude dam which formerly existed. At the distance of 
about paul from Mojokerto we stopped to see this 
fine piece of work, which has just been completed ; it is now 
in use, and through it passes all the water for the supply of 
the Sourabaya branch of the Kediri river. The sluice is 
constructed about J paul lower down the river than the former 
rude opening. A solid sound part of the bank was selected, 
and a new cut of a couple of hundred yards throws the water 
into the old course. The sluice is double, having two pas¬ 
sages for water, each about 20 feet wide, the one left open 
for the water of the river to flow freely through, the other 
fitted with double doors and forming a lock between, in order 
to admit the passage of boats in all states of the river, 
with ease. Both the masonry and lock works are simple, 
solid and well constructed. The whole mass rests upon a 
compact flooring of large teak piles and timber, where every 
precaution has been taken to prevent undermining. The 
masonry consists of hewn stone and bricks brought out from 
Europe, and set in cement. The doors of the lock are 
massive and heavy, but yet worked easily with the assistance 
of some small arched ducts constructed in the mass of the 
masonry, and by manoeuvring the doors of which by means 
of winches, the water is so admitted or withdrawn from the 
lock, as to facilitate the movement of the heavy apparatus 
in whichever direction it is wished. This is more parti¬ 
cularly the case with the door most distant from the Porong 
river, which is a triangle of unequal sides, the shorter side 
closing the lock, the longer travelling in g semi-circular 
room in the masonry, and at the point of junction of the 
two doors, at the angle, turning on hinges and grooves. 
By means of archways below the surface, the water can be 
applied or withdrawn from the superficies of the longer side, 
and the whole then moves, that is, opens or shuts, by the 
force of hydrostatic pressure. The work is one of science, 
skill and public utility, and does, honor to the Govern- 
