The box shaped stone graves of the State are due to the Delawares and Shawnees, chiefly the former, who continued to bury in sepulchers of this type after their return from the East.  Those in Ashland and some other counties, as is well known, mark the location of villages of this tribe.  Those along the Ohio, which are chiefly sporadic, are probably Shawnee burial places, and older than those of the Delawares.  The bands of the Shawnees which settled in the Scioto Valley appear to have abandoned this method of burial.

There are certain mounds consisting entirely or in part of stone, and also stone graves or vaults of a peculiar type, found in the extreme southern portions of the State and in the northern part of Kentucky, which can not be connected with any other works, and probably owe their origin to a people who either became extinct or merged into some other tribe so far back that no tradition of them now remains.

Recently a resurvey of the remaining circular, square, and octagonal works of Ohio has been made by the Bureau agents.  The result will be given in a future bulletin.