on water communications, and as yet Americans did not dream that the experience of mankind was useless to them.
If America was to be developed along the lines of water communication alone, by such means as were known to Europe, Nature had decided that the experiment of a single republican government must meet extreme difficulties. The valley of the Ohio had no more to do with that of the Hudson, the Susquehanna, the Potomac, the Roanoke, and the Santee, than the valley of the Danube with that of the Rhone, the Po, or the Elbe. Close communication by land could alone hold the great geographical divisions together either in interest or in fear. The union of New England with New York and Pennsylvania was not an easy task even as a problem of geography, and with an ocean highway; but the union of New England with the Carolinas, and of the seacoast with the interior, promised to be a hopeless undertaking. Physical contact alone could make one country of these isolated empires, but to the patriotic American of 1800, struggling for the continued existence of an embryo nation, with machinery so inadequate, the idea of ever bringing the Mississippi River, either by land or water, into close contact with New England, must have seemed wild. By water, an Erie Canal was already foreseen; by land, centuries of labor could alone conquer those obstacles which Nature permitted to be overcome.
In the minds of practical men, the experience of
