160 
Central fragment of columella bead, 69.5 mm. long, 6 mm. diameter. 
3 mm. diameter. 
Tip fragment of columella bead, 
diameter. 
Columella bead, 44.5 mm. long, 6 mm. diameter. 
Columella bead, 42 mm. long, 5 mm. diameter. 
Columella bead, 89.5 mm. long, 9 mm. diameter. 
EXPLORATION OF BURTON MOUND 
(ETH. ANN, 44 
Hole 
30 mm. long, 5 mm. diameter. Hole 2 mm. 
Hole 2.5 mm. diameter. 
Hole 2.25 mm. diameter. 
Hole 4.5 mm. diameter. 
Blank for columella bead, finished except that it is unbored, 81 mm. long, 
7 mm. diameter. 
Columella bead, 74.5 mm. long, 4. 
Butt fragment of columella bead, 
diameter. 
Blank for columella bead, 65 mm 
Blank for columella bead, 64 mm 
Blank for columella bead, 40 mm 
Blank for columella bead, 63 mm. 
Hole 3 mm. diameter. 
29 mm. long, 9 mm. diameter. Hole 2 mm. 
5 mm. diameter. 
. long, 18 mm. diameter. 
. long, 18.5 mm. diameter. 
. long, 15 mm. diameter. 
long, 35 mm. diameter. 
Blank for columella bead, 74 mm. long, 30 mm. diameter. 
Blank for columella bead, 61 mm. long, 37 mm. diameter. 
Blank for columbella bead, finished except that it is unbored. 57 mm. long, 
8 mm. diameter. 
HINGE BEaAps 
The beads made from the straight edge of the hinge of the rock- 
oyster shell can be recognized not only by their purple color but by 
the transverse groove across the middle of the bead which remains 
from the ligamental notch at the center of the hinge. These beads are 
usually barrel-shaped. The size varies materially. A specimen with 
profile of the natural center groove is shown in Plate 26, m. Typical 
specimens may be listed as follows: 
Hinge bead, 42 mm. long, 5 mm. diameter. Hole 1.5 mm. diameter. 
Hinge bead, 26 mm. long, 3.5 mm. diameter. Hole 1.5 mm. diameter. 
Hinge bead, 23 mm. long, 4 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 20.5 mm. long, 3.5 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 23 mm. long, 3.5 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 23.5 mm. long, 3.5 mm. diameter. Hole 1 mm. diameter . 
Hinge bead, 25 mm. long, 6 mm. diameter. Hole 1.5 mm. diameter. 
Hinge bead, 25 mm. long, 4.5 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 30.5 mm. long, 5.75 mm. diameter. Hole 1.5 mm. diameter. 
Hinge bead, 23.5 mm. long, 5 mm. diameter. Hole 2 mm. diameter. 
Hinge bead, 32 mm. long, 6 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 23.5 mm. long, 4 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 36.5 mm. long, 5 mm. diameter. Hole less than 1 mm. diameter. 
Hinge bead, 29 mm. long, 5.6 mm. diameter. Hole 2 mm. diameter. 
Hinge bead, 28 mm. long, 6 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 31 mm. long, 4.25 mm. diameter. Hole less than 1 mm. diameter. 
Hinge bead, 21.5 mm. long, 4 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 41 mm. long, 6 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 35.5 mm. long, 5.5 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 38 mm. long, 6 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 32 mm. long, 7 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 25 mm. long, 45 mm. diameter. Hole 1 mm. diameter. 
Hinge bead, 18 mm. long, 4.5 mm. diameter. Hole 1 mm. diameter, 
