A boat called the 4k Croton Maid," carrying four persons, was placed in the aqueduct, to be floated down by the stream. The water, with the boat, arrived at the Harlem River during the night of the 23d. On the 27th it was allowed to enter the receiving reservoir at Yorkville, and on the 4th of July the distributing reservoir on Murray Hill,1 both events being observed with great ceremony. The public celebration -- the grandest demonstration in the history of the city up to that time -- was held on the 14th of October. Near the head of the line, as one of the guards of honor, marched the Sing Sing Guards. The total cost of the Oroton Aqueduct enterprise (reckoning every item of expense) was nearly 812,500,000. High Bridge, as it is at present, was not completed until 1848. The quantity of water at first transmitted through the aqueduct did not exceed 12,000,000 gallons daily. The aqueduct was constructed to afford a maximum discharge of 72,000,000 United States gallons every twenty-four hours, and it. was thought utterly impossible that such a supply would be required for generations to come. But within thirty years even this amount was found inadequate; and by permitting the water to rise in the aqueduct to within twelve and one-half inches of the crown of the arch -- thirty-two inches higher than had been originally intended-- a daily supply of 05,000,000 gallons was forced, which, in turn, was found so far from meeting requirements that two new sup1 This was the old Forty-second Street occupied by the New York Public Library.