e hydraulic an additional water supply is the erection of Quaker years, be stored up for use. Bridge dam and reservoir. Itsutility and necessity are grade being raised increased the static head, and the capacity to deliver the amount of water required per- conceded, though its construction has not… … 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 same 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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