One of the singularly most impressive remaining large pumping stations in the entire USA is the Colonel Ward plant in Buffalo. Here is a magnificent sight to behold, an eye-popping row of five gigantic triple expansion vertical Corliss engines. In the lower foreground we also see two of the three modern electric centrifugal pumps which now perform all of the pumping duties at this plant. Some idea of the size of the engines can be obtained by looking at the waist-high railings on the various catwalks on the engines. Each engine and the massive pump below it together weigh 11,000 tons, and the piston stroke is 66 inches. Two flywheels twenty feet in diameter maintain the smooth running ba-lance of each engine. Two of the three electric centrifugals in foreground. Each cen-trifugal will pump about twice as much water as one of the large steam powered pumps.