On the northeast angle of the mesa referred to were found the remains of an old camp, over which were scattered large quantities of arrowheads, knives, and flakes of obsidian. This in itself would be insignificant, but the fact that many of the specimens of this material have been lying exposed to the elements until the upper surface has undergone change in color, so as to become bleached and friable, in some instances to the depth of from one-tenth to one-fourth of an inch, warrants the inference that the relics may have been made by the same people who made the petroglyphs, as the worked relics generally differ from those of the present Indians by being larger and less elaborately finished. At the lower end of the southeastern slope of the mesa are a number of flat rocks bearing mortar holes, which have no doubt been used in grinding grass seed and other grains. In general type these petroglyphs correspond very closely to those of other areas, in which the so-called Shoshonian types occur, the most common, apart from those presented in Pls. I and II, consisting of concentric circles, rings, footprints of the bear and of man, and various outlines of the human form, beside numerous unintelligible forms. [Illustration: BUREAU OF ETHNOLOGY TENTH ANNUAL REPORT PL. I PETROGLYPHS IN OWENS VALLEY, CALIFORNIA.] [Illustration: BUREAU OF ETHNOLOGY TENTH ANNUAL REPORT PL. II PETROGLYPHS IN OWENS VALLEY, CALIFORNIA.] Southeastward of this locality there is a low divide leading across the Benton range into the broad, arid, sloping sand desert of Owens valley proper, but it is not until a point 12 miles south of Benton, along the line of the old stage road, is reached that petroglyphs of any consequence are met with. From this point southward, for a distance of 6 miles, large exposures and bowlders of basalt are scattered, upon which are great numbers of petroglyphs, pecked into the rock to depths of from half an inch to 1-1/2 inches, and representing circles, footprints, human forms, etc. The first series of illustrations, selected from numerous closely-connected bowlders, are here presented on Pls. III to VII. The designs marked _a_ on Pl. III resemble serpents, while that at _d_ is obviously such. This device is on the horizontal surface, and is pecked to the depth of about 1 inch. The scale of the drawing is one-thirtieth of the original petroglyph. The characters indicating the human form in _e_, _g_, and _h_ resemble the ordinary Shoshonian type, and are like those from various localities in Arizona and southern Utah and Colorado. [Illustration: BUREAU OF ETHNOLOGY TENTH ANNUAL REPORT PL. III PETROGLYPHS IN OWENS VALLEY, CALIFORNIA.]