74 EXPLORATION OF BURTON MOUND (ETH. ANN. 44 
The rim is squared and varies in width from 31.7 to 38.1 mm. The inside wall 
meets the rim without bevel. The outside wall has 15.8 mm. width bevel, form- 
ing an acute angle with the rim. The concavity is 244.4 mm, diameter, indicat- 
ing that the bottom of the bowl is 53.9 mm. thick. The bottom is flat and 
about 209.5 mm. diameter, there being a rather definite line of demarcation 
where the bottom joins the sides. (PI. 3, e.) 
Fragment of hard gray sandstone bowl found in four pieces. The fragment 
measures 698.5 mm. diameter and sits 273 mm. high, this being the original 
height. The rim is squared with great precision and is 41.2 mm. wide. The 
edges where the rim meets inside and outside walls bulge for a space of about 
6.3 mm. The concavity is estimated to have been 203.2 mm, diameter. The 
bottom is rounded. HEnough of the specimen remains for a complete reconstruc- 
tion of the bowl. 
Entire bowl of greenish gray sandstone, fine textured; 333.3 mm. diameter, 
180.9 mm. high. The rim is nicely squared and varies in width from 25.4 to 
28.5 mm. The inside surface is beveled off a little where it meets the rim. 
The outside surface has a bevel 12.7 mm. wide forming an acute angle with the 
vim. The cancavity is 133.3 mm. diameter. The bottom is flattish. 
BOWLS OF SANDSTONE WITH GROOVED RIM 
Entire bowl of gray sandstone, 463.5 mm. diameter at the rim, 222.2 mm. 
high. The rim is squared without bevel and 28.5 mm. wide. A groove averaging 
9.5 mm. wide and 4.7 mm. diameter runs around the center of the rim. There 
is no trace of asphalt in the groove, although the purpose of the groove may 
have been to hold inlay work: The concavity is rounding and 180.9 mm. diam- 
eter. The bottom is flat and is 317.5 mm. diameter. The bottom forms a well 
defined angle with the sides. (PI. 3, f.) 
Fragment of bowl of greenish gray, fine textured, but somewhat friable sand- 
stone, 200 mm. diameter, 127 mm. high. The rim is squared, 17.4 mm. wide, 
and there was a groove 3.1 mm. wide and 1.5 mm. diameter at the center of 
the rim. The rim is at present in a worn and to some extent fractured con- 
dition. The concavity is 100 mm. diameter. Less than a third of the bowl is 
missing. (Pl. 4, a.) 
MORTARS 
Several of the mortars recovered were merely beach bowlders with 
the outside unshaped, or stones whose surfaces consisted more or less 
of fractures, that appearing to have been the original condition, or 
with sometimes a rough corner or projection pecked away to carry 
out the idea of making the vessel shapely. 
Entire bowl of gray sandstone, hard and fine textured, 139.7 mm. diameter, 
120.6 mm. high. The rim is rounded, but forms quite a sharp curve where it 
meets the inside wall. Concavity 93.6 mm. diameter. The bottom is completely 
rounded. (PI. 4, f.) 
Mortar of coarse gray sandstone, 184.1 mm. diameter, 158.7 mm. high. Con- 
cavity 88.9 mm. diameter. The lip is rounded. The bottom is flat. The 
fragment represents one-third of the entire bowl. (PI. 4, 0.) 
Entire bow] of bright green stone mottled with whitish flecks ; 76.2 mm. diam- 
eter, 47.6 mm. high. Rim rounded. Concavity 31.7 mm. diameter. Bottom 
neatly rounded. 
Fragment consisting of about one-half of a metate of coarse gray sandstone. 
The fragment is 215.9 mm. long, 165.1 mm. wide, at the end which is intact, 
