Aboriginal Monuments and Relics of New York, 309 
astonishment. ‘They are, however, for the most part, compara- 
tively small, varying from one to four acres,—the largest not 
exceeding sixteen acres in area. ‘The embankments, too, are 
slight, and the ditches shallow; the former seldom more than 
four feet in height, and the latter of corresponding proportions. 
The work most distinctly marked exists in the town of Oakfield, | 
i Genesee county ; it measures, in some places, between seven and 
eight feet from the bottom of the ditch to the top of the wall. 
In some cases the embankment is not more than a foot in height, 
and the trench of the same depth. Lest it should be doubted 
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intervening country presenting a beautiful variety of cleared and 
* little hill, or where banks of streams serve to lend security to the 
position. A few have been found upon slight elevations in the os 
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above the lakes, that the latter have subsided to the present level 
since their erection. This conclusion does not necessarily follow 
from the premises. Few positions susceptible of defense, under 
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