From the earliest exploration and settlement periods rivers and coast inlets have been used for transportation. As has been pointed out, the Indian, before the coming of the white man, made good use of his canoe. Boats and barges propelled by oars, poles, or snubbed along by ropes attached to trees on the banks were in early use. Along the coast and the larger rivers sails were made use of. Upon the ocean there was a large development in wooden sailing vessels. The great number of American ships and the inroads made by American merchants upon English trade had much to do with bringing on the war of 1812. =Canals.=--Canals had shown their usefulness in England and other European countries, for transporting the internal commerce cheaply and efficiently; it was but natural, therefore, that they should be considered in the United States. The first canal was in Orange County, New York, and was used for transporting stone as early as 1750. Numerous short canals were constructed in Pennsylvania, New York, and Massachusetts prior to 1810, but the peak of canal building came after this date. The first lock used in the United States was part of a canal extending from the Schuylkill River to the Susquehanna in Pennsylvania. New York, seeing the trade of the Northwest Territory going to Philadelphia on account of the turnpikes which had crossed the Alleghanies through state and private means, was anxious to do something to get control. An agitation for a canal joining the Hudson River with Lake Erie or Lake Ontario consummated in a commission, 1810, headed by Gouverneur Morris, to investigate the question of building one or both of the canals which seemed feasible, namely (1) from Albany up the Mohawk and westward to Lake Erie near Buffalo; (2) from Albany to Lake Champlain, thence an opening to the St. Lawrence, which had already been surveyed. In 1812 a second commission was formed which included with Morris, such men as De Witt Clinton, Robert Fulton, and Robert R. Livingston. An endeavor was made to secure Congressional aid. The war coming on no action was taken, but the demands for the canal continued. To the energy and political ability of DeWitt Clinton is attributed the final success of the enterprise. When he was elected governor in 1816 he made this the paramount effort of his administration. He stirred public interest by addresses and presented a convincing memorial to the legislature. He argued that “As a bond of union between the Atlantic and western states it may prevent the dismemberment of the American empire. As an organ of communication between the Hudson, the Mississippi, the St. Lawrence, the Great Lakes of the north and west, and their tributary rivers, it will create the greatest inland trade ever witnessed. The most fertile and extensive regions of America will avail themselves of its facilities for a market. All their surplus productions,” he prophesied, “whether of the soil, the forest, the mines, or the water, their fabrics of