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Rh which marked the former lines of migration were cut by deep-worn trails crossing them at right angles.

During the reign of the buffaloes in the Ohio basin their greater thoroughfares were undoubtedly made by their annual migrations, even though the extent of this movement did not exceed a few hundred miles. In this day the winters are appreciably milder along the Ohio river than even in the northern portions of the states of which it forms the southern boundary. And here, as in the Far West, the routes of the buffalo are north and south with here and there a great cross trail.

These greater trails lay largely on the watersheds which the buffalo found with great certainty. He was an agile climber despite his great size and weight. Writes Mr. Allen, "They will often leap down vertical banks where it would be impossible to urge a horse, and will even descend precipitous rocky bluffs by paths where a man could only climb down with difficulty, and where it would seem almost impossible