Meantime the general work on the line went forward " with full as much speed," " as is desirable under " say the Commissioners, present circumstances ;" they add, had the Commissioners, however, been pursue the original plan of the work, there can left to

scarcely be a doubt that the Croton water would have been flowing through our streets, and regaling both the taste and sight of our citizens, on, if not before, the 4th July, 1842."

The summary of the work for the first six months of 1839, is thus given :

1st. THE AQUEDUCT. The whole length of aqueduct, arched complete, is 77,587 feet, running measure, or about 14 miles and two-thirds. That completed on the first of miles and January last, as per our semi-annual report of that date, was 59,169 feet, or 11 one-fifth. The increase in this part of the work, since our last report, is 18,418 feet, or about three and a half miles in length. 2d. SIDE WALL. The length of side wall ready to receive the brick facing and It now amounts to 17,535 feet, making an arches, was, at our last report, 1~443 feet. increase in this description of the work, of 16,092 feet, in six months.

3d. CULVERTS. There are 92 culverts now complete and in use, leading off the water of the several streams at which they are the conduits. Their length in the aggregate is 6,240 feet. The number completed at our last report was seventy-nine, and their length 5,476 feet. There is, therefore, an increase of 13 in the number of culyerts built since our last report. 4th. TUNNELS. The number of tunnels excavated through their whole length, is jive, and in the aggregate, are 1,197 feet long. Only three were completed at our last report, of 667 feet in length, which shows an increase of two tunnels completed, 530 feet in length.