286 



BUREAU OF AMERICAN ETHNOLOGY 



llJLLL. 60 



(c) Fractni'e by liokling the stone to be Avorked flatwise on a stone 

 or other rest with one hand and striking it with a hammer, thus pur- 

 posely shaping it or obtaining desired flakes. 



(d) Fracture by holding the stone to be shaped edgewise on an 

 anvil-stone and striking it, edge on, with a hammer, thus purposely 

 shaping it or obtaining desired flakes. 





Vie. 143. I'ittrd liaininort<toucs eiiiployod in a wide raugc of uses, aud of very genoral 



occurrence. 



(c) Fracture by holding the stone to be shaped in a clamp or 

 otherwise fixing it and chipping the exposed margin with a hammer, 

 thus modifying the form. 



