Occasionally an isolated one is found, but almost invariably they are in groups of three to ten or more. They are usually placed along the crest of a ridge, but when in the bottoms or on a level bluff they are in direct lines or gentle curves. They are very numerous, being found in almost every bottom and on nearly every bluff. They are usually circular and from 2 to 12 feet high, and are composed wholly of earth, wholly of stone, or of the two combined. Where stone was used the plan seems to have been first to pave the natural surface with flat stones, in one or two thicknesses, for a foundation. In one case the stones were thrown together indiscriminately. Human remains are almost invariably found in them. The bones are generally very much decayed, though each bone is found almost entire except those of the head. This seems to have always rested on a stone, and to have been covered by one or more stones, so that it is always found in a crushed condition. In rare instances stone implements, pipes, etc., are found in the mounds. The remains found in tumuli wholly of stone are much more decayed than in those of mixed material. One opened by the writers of the article is described by them as follows: On the south side of it the bed stone had been formed into a shallow trough. On removing the flat stones which covered this, and which showed no action of fire, we found a bed of charcoal several inches thick, both animal and vegetable, and the limestone which composed it was burned completely through. Some fragments of a human femur were found in a calcined state. There were no indications of fire elsewhere in the mound, but there were the partial remains of several skeletons, lying in two layers, with stone and earth between them. In another, examined by them, fragments of human bones were found so near the surface as to be reached by the plow; but deeper, on the north sides, were single skeletons laid at length east and west, and between them a mass of bones confused as though thrown in indiscriminately. The diameter of this mound was about 30 feet, height 2-1/2 feet. In section 24, township 55, range 7, is a small hill, known as "Wilson's Knob." Its crest, which is about 120 feet long, is completely covered with stone to the depth of several feet, the pile being about 20 feet wide. Examination brought to light the fact that this was originally a row of stone mounds or burial vaults, nine in number, circular in form, each from eight to nine feet in diameter (inner measure), and contiguous to one another. Judging from appearances it would seem that each had been of a conical or dome-like form. They were composed wholly of stone, and the remains found in them were almost wholly decomposed.