HYDRO-ELECTRIC INSTALLATIONS. CXXI, 
Mr. Keele has shown how the future requirements of 
Sydney may be met for some years to come at least, and 
now Mr. Kilburn Scott suggests that great economic use 
may be made of the surplus head from those upper reaches. 
Mad the data just referred to been readily available these 
remarks might have been supplemented by some calcula- 
tions and estimates. As it is they must be taken as an 
appreciative acknowledgment of the very valuable paper 
of Mr. Kilburn Scott which has suggested them. 
Mr. OARDEW advocated combining irrigation schemes 
and hydro electric installations. He gave some interesting 
details of Waipori (Dunedin) hydro electric installation,. 
and in connection with some mistakes made there, he 
pointed out the necessity for obtaining skilled advice in 
every one of the many branches of engineering involved in 
a great scheme. He gave details of cost of various power 
plants and showed that steam plants in large units in Lan- 
cashire were able to compete with hydro electric plants. 
He also quoted the figures of Mr. Rooke concerning the 
steam generated electric power in Sydney. 
Mr. SHIRRA drew attention to the work that can be done 
by acomparatively small quantity of water at high pressure. 
He strongly advocated large power stations outside the 
city. | 
Mr. Corin quoted 55/- per E.H.P. at Barron falls as the 
price actually paid by the Queensland Government. At 
this rate carbide of calcium ought to be produced at great 
profit, as 130,000 Ibs. were imported by the Commonwealth 
last year. He said that 3,500 HP. might to be developed 
at Barron Falls. Production of aluminium from bauxite 
ought to be taken up also, especially as aluminium con- 
ductors might with advantage be used. He thought Barren 
Jack, being primarily an irrigation scheme, must be a great 
8—Sept, 16, 1908, 
