The most common variety of grinding stones is, of course, the metate, or mill-stone, used in grinding corn. These implements have a variety of forms. They may be flat above and rounded below, or flat on both sides, triangular on each face, or simply convex on each side. None of them have feet like the Mexican metates. The stone with which the grinding was done, or the one held in the hand, also varies in shape, size, and evidences of use.[67] Stones with a depression in one face served as mortars. A stone in the form of a pestle, flat on the end, served as a paint grinder. Several flat stones with smooth surface, showing the effect of grinding, and others with slight concavities, undoubtedly served the same purpose. Smooth stones showing grinding on one or more faces were evidently the implements with which the builders smoothed the walls of the houses after the masonry had been laid; others were used in polishing pottery.
MISCELLANEOUS STONES
Many stone balls, large or small, were found. Some of these show chipping, others are ground smooth. Certain of these balls were evidently used in a game popular at Cliff Palace, in which they were rolled or dropped into deep pits and grooves. It appears that this game was played by occupants of the sacred rooms, as the pits are common in the kiva floors. Other stone balls were formerly tied to the end of a handle with a thong of hide and used as a weapon.
| BUREAU OF AMERICAN ETHNOLOGY | BULLETIN 51 [PLATE 30] |
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| BUREAU OF AMERICAN ETHNOLOGY | BULLETIN 51 [PLATE 31] |
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| BUREAU OF AMERICAN ETHNOLOGY | BULLETIN 51 [PLATE 32] |
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A half oval stone, smooth and flat at one pole, is supposed to have been an idol, possibly the earth goddess, who is repeatedly represented by the Hopi in a similar way. It was left near where it was found at the northwest corner of kiva H. Our masons used rectangular slabs of soft stone, which were doubtless door-closes, as mortar boards. They were held in place in the door opening by jambs made of mortar laid on sticks, and by a horizontal rod which passed between two osier eyelets set in the uprights of the door-frame and projecting from it. These stone doors were sometimes held in place by a groove cut in the threshold or by a ledge of adobe.
Two thin, flat, circular stone disks ([pl. 22, c]), with smooth surfaces and square edges, accompanied the calcined human bones in the inclosure at the northern end of the large refuse heap. It is probable that some of these disks were used as covers for mortuary vases. Irregularly shaped flat stones with pits and incised figures pecked in their surface were used in a game, and a slab covered with incised figures but without the pits ([pl. 23, c]) probably served a similar purpose.
Several large stones, which the builders of Cliff Palace had begun to dress and had later rejected, show the method adopted by them in cutting stones the required size. When stones were found to be too large to be laid, or had projections that interfered with the required shape, a groove was pecked where the fracture was desired and the stone broken along the groove.