Plate 10 



Bola stones, " plummets " and spool-shaped stones 



i, Bola stone from Patagonia; 2, North Troy; 3, Genesee co. ; 4 Brew- 

 erton; 5, Brewerton; 6, Lysander; 7, 8, spool shaped stone, Coxsackie; 9, 

 grooved spool, Coxsackie. 



