28 GEOMETRICAL EARTHWORKS OF OHIO. 
breadth of these at thé side was from five to six feet, but as they pen- 
etrated inwards they widened gradually so that at the center the excava- 
tion became 15 feet in diameter. Considerable lateral digging was done 
from these trenches to uncover skeletons and other indications appear- 
ing in their sides, 
a , Sguare truncated 
Ge Mond, 
Oia ae 
Lf, Ga. Syuier del. 7846. 
Fic. 8. Copy of Fig. No. 1, pl. XxJ, Ancient Monuments. 
Two series of upright post molds, averaging 5 inches in diameter, 
equi-distant 10 inches, and forming a perfect circle 36 feet in diameter, 
constitute a pre-eminent feature of this mound. Within these circular 
palings the mound was penetrated systematically by thin seams of fine 
sand sagging in the center and averaging 1 foot apart. Resting upon 
the natural black loam at the bottom, timbers averaging 8 inches in 
diameter radiated from the center, and in the south and west trenches 
were noticed to extend continuously to the posts. These timbers were 
detected, for the most part, by their burnt remains, and also by the 
molds of dark earth in the yellow clay produced by the decomposition 
of wood. Directly over these timbers was a horizontal line of decayed 
and burnt wood, but mostly decayed, averaging half an inch thick. 
The upright post molds of the lower series were very distinct, and 
measured 5 feet in vertical height. In one was found a small sliver 
of what appeared to be black walnut. Several of them contained the 
burnt remains of wood, an lin many of these instances the black bark 
was clinging to the sides. 
