THE WATER SUPPLY OF SYDNEY. CV, 
Mr. KEELE proposed that the debate be adjourned as the 
hour was late, and he had many points requiring replies to 
which reference had been made by various speakers. 
ADJOURNED DISCUSSION. 
Professor KERNOT said—The address contains much 
valuable historical and statistical matter as to the Sydney 
Water Supply, but would have been much clearer and more 
intelligible, had a plan even ona very small scale and a 
longitudinal section with figured levels, been added. The 
facts stated about the Prospect Reservoir somewhat sur- 
prise me. Its enormous cost—its very low level causing 
the lower two-thirds of its depth to be unavailable without 
pumping—the unfortunate, I think I may say, lamentable 
fact that only 2,000, or as elsewhere stated 3,000 million 
gallons can safely be be drawn from it, and—the fact that 
the Cataract Reservoir, having practically seven times the 
reliable capacity has been constructed for a comparatively 
moderate cost, provoke the question, as to why the Pros- 
pect Reservoir was ever made atall.. Then the serious 
failure of the embankment, which I personally witnessed, 
and which was very similar to that which took place at the 
only Victorian dam of equal height, namely that at Dur- 
didwarrah on the Geelong Water Works, has raised in my 
mind a confirmed aversion to earthen dams of more than 
50 feet in height. It seems to me that in the light of 
present knowledge, a reservoir should have been made at 
Cataract in the first instance and the money spent on 
Prospect saved. 
The residual mass curve is new to me. Ihave carefully 
studied the curves given by Mr. Keele, and fail to see that 
they give the information he claims. Take the simplest, 
that at Cordeaux River. It starts quite arbitrarily at a 
7—Sept. 16, 1908. 
