edge of It 
tiny fragment with the pincers by a twisting 
a 
or 'wrenching motion (Fig* 10) * The piece is often reversed 
in the hand, so that it may be Worked away symmetrically* 
Arrow-head manufacture is a specialty, just as arrow«*raak~ 
a/ 
4 V- *T 
u ’ n> ? 
ne d 1 c in e, a nd . -> Ui o r 1 1 r % a , 5 
