October 19, 1905] 



NA TURE 



619 



on the spot it is difficult to obtain trustworthy inform- 

 ation ; by some it is said that one condition of the contract 

 for the construction of the railway, which is being pushed 

 forward to the copper, lead, and zinc fields at Broken 

 Hill, 400 miles to the north-east, is that 100,000 tons of 

 the ore must be sent to Beira yearly for ten years. If 

 true, then that ore will not be available for reduction at 

 the falls. 



There is a convenient spot for a power station near the 

 water at the end of the second gorge — all the Niagara 

 power stations are on the top of the falls, with the excep- 

 tion of those of the Ontario Power Company, and the old 

 Electric and Hydraulic Company — and it is the latter 

 method of construction that would be the most suitable 

 to follow at a Victoria power station. 



But jealously guard the beauty of your falls. The pro- 

 tection of the grandeur of their American sister was the 

 underlying idea of Thomas Evershed's hydraulic power 

 scheme of 1886. How little has that object been kept 

 sight of? 



Niagara iaa$ glorious nature, to-day it is power, Victoria 

 is poetry. 



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 Calculus for Beginners," 

 of " Elemenl;u-v Dvnamii 



and Sons announce: — "Integral 

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NO. 1877, VOL. 72] 



Messrs. A. and C. Black promise : — " Black's Medical 

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The list of the Cambridge University Press contains :-" 

 " Tables and Constants to Four Figures, for use in 

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