FEWKES] PIGMENTS—STONE OBJECTS (29 
which was found both in masses and in powdered form, and there were 
unearthed several disks of this material which had been cut into definite 
shape as if for a special purpose. 
One of these disks or circular plates (figure 356) was found on the head 
of a skeleton. The rim is rounded, and the opposite faces are concave, 
with a perforation in the middle. Other forms of this worked kaolin 
are spherical, oblong, or lamellar, sometimes more or less decorated on 
the outer surface, as shown in plate CLXXxII, e. Another, shown in 
J, of the same plate, is cylindrical, and other fragments of irregular 
shapes were found. A pigment made of micaceous hematite was found 
Fie. 356—Kaolin disk (natural size) 
in one of the Sikyatki paint jars. This material is still used as color- 
ing matter by the Tusayan Indians, by whom it is called yayala, and 
is highly prized by the members of the warrior societies. 
STONE OBJECTS 
Almost every grave at Sikyatki contained stone objects which were 
found either in the bowls or in the soil in the immediate neighborhood 
of the skeletons. Some of these implements are pecked or chipped, 
others are smooth—pebbles apparently chosen for their botryoidal 
shape, polished surface, or fancied resemblance to some animal or other 
form. 
Many of the smooth stones were probably simply polishing stones, 
used by the women in rubbing pottery to a gloss before it was fired. 
Others were charm stones such as are still employed in making med- 
icine, as elsewhere described. There were still other stones which, 
from their resemblance to animals, may have been personal fetishes. 
Among the unusual forms of stones found in this association is a 
quartz crystal. As I have shown in describing several ceremonies still 
observed, a quartz crystal is used to deflect a ray of sunlight into 
the medicine bowl, and is placed in the center of a sand picture of 
