The rude cuts of the human faces, part of the human feet, the rings, stars, serpents, and some others, are evidently works of art, as in the best of them the marks of the engraving instrument are to be seen. In all cases, whether single or in groups, the relative dimensions of the figures are preserved. The surface of this block is 8 by 11 feet. At the south end of the petroglyphs occurs a figure of several concentric rings, a design by no means confined to Ohio. The third figure right of this resembles others in the same group, and evidently indicates the footprints of the buffalo. Human footprints are generally indicated by the pronounced toe marks, either detached as slight depressions or attached to the foot, and are thus recognized as different from bear tracks, which frequently have but slight indications of toes or perhaps claw marks, and in which also the foot is shorter or rounder. The arrow-shaped figures are no doubt intended for turkey tracks, characters common to many petroglyphs of the middle and eastern Algonquian area. Fig. 66 gives several of the above characters enlarged from the preceding figure. [Illustration: FIG. 66.--Characters from Barnesville Track rock.] In Fig. 67, referring to another block mentioned in the same report, lying 20 feet south of the one first mentioned, there is a duplication of the characters before noted--human footprints, bear and turkey tracks, and the indication of what may be intended to represent a serpent. [Illustration: FIG. 67.--Barnesville Track rock, No. 2.] Fig. 68, from p. 105 of the same volume, gives copies of sketches from the rocks near Wellsville, Ohio, with remarks as follows: [Illustration: FIG. 68.--Petroglyphs, Wellsville, Ohio.] On the Ohio side of the river, 1 mile above Wellsville, there is a large group of sculptures on a flat sand rock of the coal series, scarred by floating ice and flood wood. They are only visible in low water, as they are only 2 or 3 feet above the extreme low stage of the river. * * * They are made in double outline and not by a single deep channel. The outlines are a series of dots made with a round-pointed instrument, seldom more than half an inch deep. The upper design is a rattlesnake with a fancy head and tail. Its length is 4-1/2 feet, a very clumsy affair, but intended for the common yellow rattlesnake of the West. The head of the snake, which occupies a space 6 inches square, is represented in the second character, which is reduced from a tracing size of nature. It brings to mind the horned snake of the Egyptians, which was an object of worship by them. The character at the left hand of the lower line may be an uncouth representation of a demon or evil spirit. The right-hand character is probably an otter carrying a vine or string in his month.