When he states that the water can be delivered .in the city, at an elevation of 125 feet, while his fountain is only of that height ; that the pipes will rise gradually until they pass Sing Sing, which, in effect, would be making water run uphill, and that he will deliver six million of gallons of wawhen the lowest calculation for laying a line of 30 inch ter, in iron pipes, for $1,700,000, cost $2,798,400, and will only deliver about three millions pipes, 40 miles in length, will of gallons every twenty-four hours we ask, what confidence can be placed in the calcu- ;

lations and estimates of the proposer ?

By his letter of the 20th of January, 1834, he says, his canal to Sleepy Hollow will be on a level with the dam; and by this canal, having no descent whatever, he calculates to be enabled to carry the whole of the river for eight miles, and thus continue the same elevation at the end of this eight miles, that he has at his fountain! !

By his communication of the 18th April, 1834, he makes a total change in his projects, and states that he will build a dam about four miles above the Quaker Bridge, of 32 feet in height, and from thence conduct the water by an open canal of 10 feet bottom, 34 feet top, and 8 feet deep, to the height near Harlem River. His first proposition was, to take the water from the mouth of the river; second, from near the Quaker Bridge; and third, at Garritson's Mill, about four miles above the said bridge. Now, although this