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Rh no reasonable doubt that their builders used the routes on the watersheds.

As was said at the beginning, it does not seem wise to attempt to speculate on the probable routes by which these early tribes found their way to and fro between their works within the interior of the country. That they did so pass it seems difficult to doubt. That those early ways were along the watersheds, higher or lower, we may well believe, since for the races that have occupied the land since their time these watersheds have been the routes of travel—and will be until aërial navigation is assured.

That these earliest Americans had roads of one description or another, there is sufficient evidence. About their great works there were graded ways of ascent, up which the materials used in construction were hauled or borne. Now and then we find mention of some sort of roads which may seem to have been of a less local nature, but so far as highways of war and commerce are concerned there is no evidence which can be admitted into this treatise.

It will not be of disadvantage, however,