These different comparative views show that New-York has, in every instance, a decided advantage over her great rivals. In other essential respects the scale preponderates equally in her favor. Supposing a perfect equality of advantages as to the navigation of the lakes, yet from Buffalo, as the point of departure, there is no comparison of benefits. From that place the voyager to Montreal has to encounter the inconveniences of a portage at the cataract of Niagara, to load and unload at least three times, to brave the tempests of Lake Ontario and the rapids of the St Lawrence. In like manner the voyager to New-Orleans, has a portage between the Chicago and Illinois, an inconvenient navigation in the latter stream, besides the well known obstacles and hazards of the Mississippi. And until the invention of steamboats, an ascending navigation was considered almost impracticable. This inconvenience is, however, still forcibly experienced on that river, as well as on the St Lawrence between Montreal and lake Ontario. The navigation from lake Erie to Albany, can be completed in ten days with perfect safety on the canal; and from Albany to New-York, there is the best sloop navigation in the world. From Buffalo to Albany, a ton of commodities could be conveyed on the intended canal, for three dollars, and from Albany to New-York, according to the present prices of sloop transportation, for $2.80, and the return cargoes would be the same. We have not sufficient data upon which to predicate very accurate estimates with regard to Montreal and New Orleans; but we have no hesitation in saying, that the descending conveyance to the former, would be four times the expense, and to the latter, at least ten times, and that the cost of the ascending transportation would be greatly enhanced. It has been stated by several of the most respectable citizens of Ohio, that the present expense of transportation by water from the city of New-York to Sandusky, including the carrying places, is $4.50 per hundred, and allowing it to cost two dollars per hundred for transportation to Clinton, the geographical centre of the state, the whole expense would be $6.50, which is only fifty cents more than the transportation from Philadelphia to Pittsburgh, and at least $2.50 less than the transportation by land and water from these places, and that, in their opinion, New-York is the natural emporium of that trade, and that the whole commercial intercourse of the western country north of the Ohio, will be secured to her by the contemplated canal.