PUMPING WATER FROM DOCKS. 



337 



pumps is also of the vertical-compound type, the cylinders being 

 16 and 27 inches diameter, with 28-inch stroke. 



The drainage-pumps consist of three single-acting barrels, 



711 



tl 



--fa | 3fc 



333 



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with solid plungers 18 inches diameter and 4 feet 6 inch stroke, 

 and are capable of lifting 13 tons of water per minute to a 



