THE HIGH BRIDGE AT HARLEM.

The High bridge at Harlem, a view of which is given in the cut below, forms part of the immense works erected to bring the water of the Croton river into the city of New York. The dam at the river, which is seventy feet wide at the bottom, seven feet wide at the top, and two hundred and fifty feet long and forty feet high, creates a pond five miles long, covering a surface of four hundred acres, and containing five hundred million gallons of water. From this the aqueduct proceeds, sometimes tunneling through solid rocks, crossing valleys by embankments, and brooks by culverts, till it reaches the Harlem river, a distance of thirty-three miles. It is built of stone, brick and cement, arched over and under, and is made large enough to discharge sixty millions of gallons every twenty-four hours. It crosses the Harlem river on a magnificent bridge of stone, fourteen hundred and fifty feet long, having fourteen piers, eight of them bearing arches of eighty feet span, and seven others of fifty feet span, one hundred and fourteen feet above tide-water at the top. The aqueduct then passes on to a first, or receiving reservoir, which covers thirty-five acres and will hold one hundred and fifty million gallons, and thence to the second, or distributing reservoir, which holds twenty million gallons, whence it is distributed by pipes through the city. The entire cost of the work has been fifteen million dollars.