quantity of earth, stone, and rock to be removed in this space, if the Canal has ten feet base, will be about 242,200 cubic feet. [For] 422 feet the Canal must be confined by a double dyke, or embankment, about four feet high; [for] 123 feet the whole depth to be dug is about 4½ feet and contains 5,085 cubic feet; at various places to the water at the bottom of the falls about 100,000 cubic feet of earth must be removed, and about 1,200 feet of a dyke to be made. An estimate of the expense of this work with five Locks . . amounts to £10,500."
The improvement of the river from Schenectady to the mouth of the Schoharie would call for an expenditure of £20,000 in dykes, dams, and small canals.
At Rome a canal 5,352 feet long was proposed as a substitute for the ancient portage path; "apparently the mean depth of the earth to be removed for forming the Canal would be about twelve feet at the greatest depth, hence about 642,240 cubic feet of earth must be removed. The ground though soft is so much interwoven with the roots of trees, and the work will
