XXVIII. T. W, KEELE. 
Water Flowing into Crown-street Reservoir by Gravita- 
tion.—The year 1886 continued to be very dry, and in May, 
notwithstanding the rapid increase of population, and 
extensions of the reticulation which had been proceeded 
with in anticipation of an additional supply by the Prospect 
works, the total quantity of water from all sources supplied 
to the citizens, was only a little over 65 million gallons 
per day. It can readily be understood, therefore, with 
what feelings of relief the announcement was received, on 
20th November, 1886, that the water via the permanent 
works was turned into Crown Street reservoir, through the 
48 inch and 42 inch pipes from Potts’ Hill, discharging, 
however, only at the rate of 3 million gallons per day. 
At this time the water in Prospect reservoir had not 
attained sufficient height to feed the canal, and the supply 
was therefore coming through the 30 inch pipes, which 
had been laid outside the dam, connecting the upper and 
lower canal. The amount of water available for Sydney 
was therefore still depending upon the daily flow of the 
rivers, and the capacity of the 30 inch pipe across the dam 
at Prospect to deliver it. As the year 1887 was wet, 60 
inches having fallen in the 12 months at Sydney and about 
the same at the heads of the rivers, no inconvenience was 
felt in Sydney, and the citizens were beginning to hope 
that the drought had passed away; but the following year 
was one of the driest on record, 23 inches only being 
registered in Sydney, and for 11 months to end of November, 
only 213 inches fell at the heads of the rivers. Prospect 
reservoir, however, had been conserving the surplus water 
during 1887, and by the end of the year 1888 the water 
there had reached the level whence it could flow by 
gravitation into the canal. On January 26th, 1888, the 
storage above gravitation level amounted to 1,356 million 
gallons. Had it not been for this, there can be no doubt 
