GC. T. ROOKE. 
development of new industries, cannot fail to make an 
impression. Electric transmission is an accomplished fact, 
and a successful commercial proposition. If electricity is 
supplied at 1d. per unit, to motors operating pumps witha 
50% overall efficiency, the cost of raising from a depth of 
100 feet sufficient water to cover an acre of land one inch 
would be approximately 1/5, or if irrigation is practised 
on the same scale as in California, the cost of electricity 
would be from 23/- to 67/- per acre per annum. As stated 
before, the average cost of irrigating citrus fruits in 
Southern California varies from £1 to £6 per acre, and 
probably averages £2an acre. It would appear that there 
are possibilities in the proposition. The author does not 
Suppose that the City Council could possibly take up such a 
scheme, and is not prepared to suggest who should do so. 
The possibilities, the far reaching effects of the success of 
such a scheme justify further investigation, if they do not 
justify the experiment, particularly in a new country. 
