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Our Surroundings 



which the water falls. A small stream falling from a great height 

 may accomplish more work than a larger stream falling from a 

 lesser height. This fact is of extreme importance in the practical 

 use of water power. 



Keystone View Co. 



A PICTURESQUE OLD MILL WHEEL 



The water which drives this overshot wheel is piped from the reservoir hack of 



the waterfall. 



Types of Water Wheels. There are several kinds of 

 water wheels, known as overshot, breast, undershot, turbine, and 



