Whetstones, Grindstones, etc.—Of these objects the following are noteworthy:—
1. A large flat implement, made of bluish claystone, with a smooth polished surface, and having a hole roughly cut out of one end. It measures 12 inches long, 4 broad, and 11⁄2 inch thick (Fig. 193).
Fig. 193.—(?) Whetstone (1⁄3).
2. One or two ordinary whetstones a few inches long, and from 1 to 2 inches broad.
3. An oblong block of sandstone, containing two smooth cavities, probably used for polishing small objects such as jet rings. One of the cavities is a hollowed circle 21⁄2 inches in diameter, and half an inch deep; the other is a groove 3 inches long, half an inch wide, and the same in depth (Fig. 194).
4. Two fragments of a circular grindstone, made of fine red sandstone. One of the portions shows a few inches of the striated circumference as well as a small segment of the central hole. The diameter of the stone when whole would be about 15 inches.
Fig. 194.—Block of Sandstone (1⁄4).
5. Two large irregularly-shaped masses of whitish sandstone, each containing a smooth cavity shaped like a trowel or botanical spud, having the sides curled up. One of these curiously-shaped cavities measures 10 by 8 inches. Its greatest depth, which is at the base and in the line of the shortest diameter, is 3 inches. The other is precisely similar in shape, but of smaller dimensions. The latter stone has friction-marks on another of its sides.