stones were laid over the graves; then the earth which had been dug
out of the graves was thrown over them. A huge pile of stones was
placed over the whole. It is quite probable, however, that this was a
work of our present race of Indians. Such graves are more common in
Kentucky than Ohio. No article, except the skeletons, was found in
these graves; and the skeletons resembled very much the present race
of Indians."

The mounds of Sterling County, Illinois, are described by W. C.
Holbrook, [Footnote: Amer. Natural, 1877, xi, No. 11, p. 688] as
follows:

"I recently made an, examination of a few of the many Indian mounds
found on Rock River, about two miles above Sterling, Ill. The first
one opened was an oval mound about 20 feet long, 12 feet wide, and 7
feet high. In the interior of this I found a _dolmen_ or
quadrilateral wall about 10 feet long, 4 feet high, and 4-1/2 feet
wide. It had been built of lime-rock from a quarry near by, and was
covered with large flat stones No mortar or cement had been used. The
whole structure rested on the surface of the natural soil, the
interior of which had been scooped out to enlarge the chamber. Inside
of the _dolmen_ I found the partly decayed remains of eight human
skeletons, two very large teeth of an unknown animal, two fossils, one
of which is not found in this place, and a plummet. One of the long
bones had been splintered; the fragments had united, but there
remained large morbid growths of bone (exostosis) in several places.
One of the skulls presented a circular opening about the size of a
silver dime. This perforation had been made during life, for the edges
had commenced to cicatrize. I later examined three circular mounds,
but in them I found no dolmens. The first mound contained three adult