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AI. XDUKKSS SI'X'TIUN A. 



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It is dittioult to ublain reliable ilala as to the total amount 

 i>f water power available and utilised in the world. Professor 

 Gibson estimates the water pcjwer of the world at 200.000.000 

 h.p., and that the United States alone is ca])able of producing 

 35-55 million h.p. From the rainfall of the United Kingdom 

 and the assumption that 5 ])er cent, could have a fall of 500 

 feet, it has l)een calculated that nearly _' million h.p. could be 

 obtained for S hours ])er day throughout the year. Professor 

 Forbes has stated that the available water h.p. in Scotland alone 

 is equal to T. 000,000 h.p. ; while referring to the United Kingdom, 

 Dugald Clerk says, " By great engineering works it might be 

 just possible to obtain ])crhaps 3,000,000 h.p. from areas which 

 could be given up for this purpose." 



In a paper recently read before the Canadian Society of 

 Civil Engineers, the following estimate of power developed by 

 water turbines is given for Europe, United States, and Canada 

 in i()Ti. (Table TV): — 



Since that date there has been considerable development, 

 and the position is given for the beginning of 1915 as: — 



Switzerland about 550,000 h.p. 



Norway over 1,000,000 h.p. 



United States between 5 and 6 million h.p. 



Quebec over 500,000 h.p. 



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