um of the boiler, between Fifty-ninth and Sixtieth Streets. They are the water level, which is situated between the upper which is 60 inches in diameter, 3844 feet high, and is the forerunners of a dozen other boilers of this type, and lower nests of tubes. This was done with the ob- built of %… … ries 816 3-inch return tubes, which are bent to a bow coming the violent fluctuations to which water tube the upper city. In the downtown plant there are in shape, which corresponds very closely to that of the boilers are liable. With this exception and the substi- all fifty-nine boilers, the…
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