150 OUR LAKES AND THEIR USES. 
them, it would provide 2,600 horse-power, valued at £15,600 per 
annum, which, estimating the gross power of a large mill at 86 
horses, would establish no less than 30 factories, and would after- 
wards be available for irrigation, and water supply. By drawing 
off the lake continuously through the grave) drift, it would be 
perfectly clear, and very shortly sufficiently pure for the supply of 
towns. Presuming that the drift bed of the lake and adjoining 
swamps spreads over only 100 square miles, then, even af 
- surface water had entirely disappeared, a supply of 50 million 
gallons a day could be ensured for many years without the assistance 
of rainfall. There is, therefore, no positive necessity for the supply 
canal from the Molonglo River, but owing to the large <r 
‘0 to 
auriferous drifts at the head of Brooke’s Creek ; and lastly, by con- 
necting wrought-iron pipes with a tank at its terminus, and using 
hydraulic nozzles, and elevators, it could be made to deepen the 
lake by raising and transporting thousands of cubic yards daily. 
It would discharge into Lake George at Geary’sGap. Thus briefly 
dis my view of the grand possibilities of this present useless, 
and positively injurious sheet of water ; it can build up and sustain 
towns, it can cover the country for many miles with a contented 
prosperous, and independent yeomanry, and lastly it can largely 
eg the hidden treasur i . Lik 
paper, 1 propose to continue my subject by descriptions of es 
Bathurst, Cowal, Urana, and ices a the aatcibons which may be 
expected to have a notable history in future ages, though, perhaps 
not quite as grand and interesting as that of Lake George. 
Discusston. 
Song J. ok Many said: It is about 40 years ago since I first ya 
ke George. It was then covered with cattle in thousands, an 
Pe — bo te and I had to cross it to get something to 
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