160 BUREAU OF AMERICAN ETHNOLOGY [Bull. 177 
Ficure 64.—Decorated disk said to come from a burial site on the Abary River (after 
W. E. Roth, MS., pl. 33-1). 
STONE ARTIFACT TYPES 
Only 46 stones showing working were found, and only 21 are arti- 
facts, the others are cores or chips (Appendix, table 24). All the 
tools are ground or polished. Rock materials include andesite, granite, 
fine-grained schist, quartzite, and gabbro. Limonite and hematite were 
used for rubbing stones. 
Adz (fig. 65, 6).—The only example of an adz is well polished 
with the sides slightly convex, tapering from the greatest width at 
the blade end toward the butt, which is battered from hammering. 
The faces are parallel, the butt flat and the blade off center. The 
corners of the blade have been broken off. Length is 6.5 em., width 
at the blade 5 cm., width at the butt 3.3 cm., thickness 1.8 cm. 
Axes or celts (fig. 65, a, c).—Seven ax fragments were identified, 
the majority too small to reconstruct the size of the original object. 
One complete specimen has parallel sides and a convex blade and 
butt. Both ends are battered from chopping and hammering. The 
surfaces taper from a maximum thickness of 3.2 cm. at the center 
toward both ends. Length is 9.2 cm., width 5.5 cm. One fragment 
of a butt tapers to a small end. Surfaces are polished on all the 
examples. 
Several complete axes from the Abary are illustrated by Verrill 
(1918 b, fig. 1). The excavated fragments suggest that the majority 
have a parallel-sided or petalloid form. One is aberrant, having deep, 
side notches a short distance from the butt end; this form is typical 
of the Rupununi Phase (cf. fig. 119; pl. 61). 
