He " It says, appears from examinations that have been recently made, that the Bronx is sufficiently elevated above the highest parts of the city to introduce its waters therein without the use of machinery, and the intermediate ground, though very irregular, presents no obstacles which art and industry may not surmount." He also says, " An absolute necessity to preserve a regular and uniform descent, leaves us little room in the choice of our route, which will be chiefly along the shore of the North river."

Mr. Weston estimated that the city would require 3,000,000 gallons of water a clay. He states that the Little Rye pond contained fifty acres, and the Big Rye pond, five hundred acres those ponds he proposed to convert into reservoirs, by building a dam six feet ;

high, which would make more than six hundred acres, and would contain 959,713,920 for one hundred and gallons, would afford an annual supply of 8,000,000 of gallons twenty days, and leave a surplus of 5,000,000 of gallons for the mills. It will, however, be remarked, that he estimated the area of the ponds double what they actually present. The water was to be brought in an open canal to the Harlem river that stream was to be crossed ;

by a cast iron cylinder of two feet diameter, with a descent of eight feet. His reservoirs were to be divided into three parts, and two of them again subdivided. The first two divisions he called the reception apartments, which were to be filled with the water from the cylinders while one was filling, the other would deposite the impure particles contained in the ;