68 UNIVERSITY MUSEUM ANTHROPOLOGICAL PUBLICATIONS VOL. VI 



ground to an edge from both sides. The stone has been drilled 

 from one end, and shows circular markings. 



Plate XXIII, 1. Large and perfect stone of pick form, 

 ground and polished. The centrum has a single well-defined 

 facet on either side, but the facets are not exactly opposite each 

 other. Chips have been broken from the bottom of the centrum 

 at both sides and the roughness ground out. One wing is 

 square edged all round, the other ground to a sharp edge, in 

 an effort to remove the marks of two deep chippings. The 

 stone has been drilled from both ends, but the bore is oval 

 and shows both longitudinal and circular scratchings. 



Plate XXII, 3. A very large stone of pick form, ground 

 and highly polished. This is the most beautiful specimen in 

 the collection. The centrum has a small but well-marked 

 facet on either side, from which it runs off smoothly into the 

 wings. At the bottom it projects beyond the wings consider- 

 ably, but is flush at the top. The wings are square edged, 

 but the tip of one has been chipped and the resulting rough- 

 ness ground out. The stone has been drilled from one end, 

 and the bore is almost a true circle, although it shows longitudinal 

 markings. 



Plate XXII, 2. A fairly large stone of pick form, ground 

 and partly polished, but still showing many striations. The 

 centrum has a large flat facet on one side, and a deep line 

 incised on the surface between the facet and wing, and another 

 at the base of the wing. The corresponding surface on this 

 side is unmarked. On the other side the centrum has three 

 facets. The top one has been deeply incised along either 

 edge and worked out until it is below the level of the sides. 

 The other two facets are also well marked, but one is more 

 sharply cut than the other. The surface of the centrum and 

 wings has been ground back for a little distance at the bottom. 

 One wing is square edged, the other rounded in an attempt 

 to grind out a large blemish. The stone has been drilled from 

 both ends, two-thirds from the bottom and one-third from 

 the top. There are deep grooves running the entire length 



