Plate II 



Celts made of black fine-grained volcanic tufa. Page 23. 



Figure a. — Chipped celt, the only polished areas being the facets forming the 

 edge. 2 / 3 



Figure b. — Variant form of celt with marked constriction in the blade. 2 / 3 



Figure c. — Celt with three polished facets on each side. 2 / 3 



Figure d. — Large celt of the pecked type, in which the polishing extends along 

 a median line from edge to pole. 2 / 3 



Figure e. — Small celt of the pecked type, only the bevels at the edge being pol- 

 ished. 2 / 3 



Figure /. — Typical celt with distinct demarcation between the pecked and the 

 polished facets. 2 / 3 



Figure g. — Highly artistic celt with all facets completely polished. 2 / 3 



Figure It. — Celt in which the chipping has not been entirely removed by pol- 

 ishing. 2 / 3 



Figure ?'. — Variant form of celt with long straight edge. 2 / 3 



