Fig. 98.—Discoidal stone, with secondary depression.

Fig. 99.—Discoidal stone, in form of a ring.

District.ABCDEF
Caldwell county, North Carolina1
Crittenden county, Arkansas1
Drew county, Arkansas1
Randolph county, Illinois12
Eastern Tennessee11
Bartow county, Georgia1
Kanawha valley, West Virginia111
Northeastern Kentucky22
KEY:
A = Quartz.
B = Novaculite.
C = Flint.
D = Quartzite.
E = Sandstone.
F = Granite.

B. Flat or slightly concave sides, edges straight and at right angles to the sides; diameter, 1⅝ to 5 inches. The type shown in [figure 100] is of sandstone from Lauderdale county, Alabama.

Fig. 100.—Discoidal stone.

District.ABCDE
Lauderdale county, Alabama1
Mississippi county, Arkansas111
McMinn county, Tennessee14
Kanawha valley, West Virginia1
KEY:
A = Sandstone.
B = Quartzite.
C = Very fine schist.
D = Yellow jasper.
E = Argillite.