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 26 miles, with a lockage of 260 feet, is set down at $1,250,000. From Brunswick to Trenton, 28 miles, with a lockage of 100 feet, 800,000 dollars. From Christiana to Elk, 22 miles with a lockage of 148 feet, 750,000 dollars. From Elizabeth river to Pasquotank, 22 miles, with a lockage of 40 feet, 250,000 dollars. These estimates thus vary from 48,000 to less than 12,000 dollars a mile, and furnish the medium of about 31,000 dollars a mile. But it must be observed that they are for small distances, are calculated to surmount particular obstacles, and contemplate an extraordinary number of locks, and that they do not therefore furnish proper data from which to form correct conclusions, with respect to the probable cost of an extensive canal, sometimes running over a great number of miles upon a level without any expense for lockage, or any other expense than the mere earthwork.

Mr. Weston, before mentioned, estimated the expense of a canal from the tide waters at Troy to lake Ontario, a distance of 160 miles, (exclusive of lake Oneida,) going around the Cohoes, and embracing 55 locks