FLAT DISCOIDAL STONES. 



103 



B. Flat or slightly concave sides, edges straight and at right angles 

 to the sides ; diameter, 1| to 5 inches. The type shown in figure 100 



Fig. 100.— Discoidal stone. 



is of sandstone from Lauderdale county, Alabama. 



G. Sides flat ; edges straight, sometimes rounding off into the sides ; 

 diameter, 2\ to 6 inches; thickness, three-quarters to 2^ inches. A 



Fig. 101 Discoidal stone. 



number from southeastern Tennessee, especially the smaller ones, are 

 quite rough, being merely pecked or chipped into shape with no subse- 



