Lake Erie is elevated 541 feet above the tide waters at Troy. The only higher ground between it and the Hudson is but a few miles from the lake: and this difficulty can be easily surmounted by deep cutting; of course no tunnel will be required. The rivers which cross the line of the canal, can be easily passed by aqueducts; on every summit level, plenty of water can be obtained; whenever there is a great rise or descent, locks can be erected, and the whole line will not require more than sixty-two; perhaps there is not an equal extent of country in the world, which presents fewer obstacles to the establishment of a canal. The liberality of Nature has created the great ducts and arteries, and the ingenuities of art can easily provide the connecting veins. The general physiognomy of the country is champaign, and exhibits abundance of water: a gentle rising from the Hudson to the lake; a soil well adapted for such operations: no impassable hills, and no insurmountable waters. As to distance, it is not to be considered in relation to practicability. If a canal can be made for fifty miles, it can be made for three hundred, provided there is no essential variance in the face of the country; the only difference will be that in the latter case, it will take more time, and consume more money. But this opinion does not rest for its support upon mere speculation. Canals have been successfully cut through more embarrassing ground, in various parts of the United States; and even in part of the intended route from Schenectady to Rome, locks have been erected at the Little Falls, and at other places; and short canals have been made, and all these operations have taken place in the most difficult parts of the whole course of the contemplated Erie navigation. Mr. William Weston, one of the most celebrated civil engineers in Europe, who has superintended canals in this state and Pennsylvania, and who is perfectly well acquainted with the country has thus expressed his opinion on the subject: "Should your noble but stupendous plan of uniting Lake Erie with the Hudson, be carried into effect, you have to fear no rivalry. The commerce of the immense extent of country, bordering on the upper lakes, is yours for ever, and to such an incalculable amount as would baffle all conjecture to conceive. Its execution would confer immortal honor on the projectors and supporters, and would in its eventual consequences, render New-York the greatest commercial emporium in the world, with perhaps the exception, at some distant day of New-Orleans, or some other depot at the mouth of the majestic Mississippi. From your perspicuous topographical description and neat plan and profile of the route of the contemplated canal, I entertain little doubt of the practicability of the measure."