the capacity to deliver the amount of water required per- conceded, though its construction has not been finished. ESTIMATE OV FUTURE CONSUMPTION OF WATER IN Its successful and permanent construction will undoubt- mitted a decreased diameter. The tunnel approached NEW YORK CITY BY PROLONGING THE… … siphon of water when the tunnel is to be emptied for THE OLD CROTON AQUEDUCT. THE HARLEM RIVER TUNNEL. examination. The diameter of this siphon is the saiue Although the aqueduct which has for many years as that of the tunnel, the change of elevation in main served New York City so well will…
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