And in general it may be observed, that the difference between a single and double freight forms an immense saving. Goods are brought from Europe for twenty cents per cubic foot; whereas the price from Philadelphia to Baltimore, is equal to ten cents. This shews how far articles once embarked, are conveyed with a very small addition of freight, and if such is the difference between a single and a double freight, how much greater must it be in the case under consideration! If the fall from lake Erie to lake Ontario be 450 feet, as stated in Mr secretary Gallatin's report on canals, it will require at least 45 locks for a navigation around the cataract. Whether it would be practicable to accommodate all the vessels which the population and opulence of future times will create in those waters, with a passage through so many locks accumulated within a short distance, is a question well worthy of serious consideration. At all events, the demurrage must be frequent, vexatious, and expensive. When we consider the immense expense which would attend the canal proposed on the Niagara river; a canal requiring so many locks, and passing through such difficult ground; when we view the Oswego river from its outlet at Oswego to its origin in Oneida lake, encumbered with dangerous rapids and falls, and flowing through a country almost impervious to canal operations; and when we contemplate the numerous embarrassments which are combined with the improvement of Wood Creek, we are prepared to believe that the expense of this route will not greatly fall short of the other. It is, however, alleged that it is not practicable to make this canal; and that if practicable, the expense will be enormous, and will far transcend the faculties of the state.