Summary

Portrait of Otis Tufton Mason Otis Tufton Mason Miscellaneous Papers Relating to Anthropology (1883)

Of these silent records of a rapidly vanishing race the most important as well as the most legible are the earthen mounds which cover the bones and dust of their dead. They crown all the peaks and ridges of our bluffs, a few rising to considerable proportions, but the greater number are mere swellings of the surface not readily recognized as being of artificial origin. Every gradation of mound structure is here present, from the stately tumulus 30 feet in height to the broad, flat sepulchres so slightly elevated as to be scarcely noticed.
Source: Wikisource

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