In the cases of such important works as the Erie Canal and the Ohio Canal the portages between the Mohawk and Wood Creek in New York and between the Cuyahoga and Tuscarawas in Ohio were of vital importance. In many instances, at the points where the old portages mark the spots of least elevation, two canals are found converging from three or four valleys.
It is quite impossible for us to realize the importance attached to the portage routes in days when steam navigation and locomotion were not dreamed of. This is suggested by the clause of the famous Ordinance of 1787 in which they were again declared to be "common highways forever free." Washington's serious study of this subject is exceedingly interesting—not less so because many of his plans which seemed to many idle dreaming were completely realized not long after his death.[1]
With the advent of the era of railway building, and as the number of the shining rails increase yearly at these geographical centers, the strategic nature of the portage routes has been and is still being strongly
