98 ISLAND CULTURE AREA OF AMERICA [eth. ANN. 3* 



The essential characters of plate 12, A, 5, C, D, are such as to ally 

 these imjDlements with the same tj'pe, their differences bein"! mainly 

 in details. The blades {A, B) have practically the same general out- 

 line, one (pi. 12, B) being sharper than the other. Plate 12, F, has 

 the ears turned upward. The margin of the blade is somewhat flat- 

 tened. The use to which these implements were put is doubtfid but 

 they may have been used for grinders. 



Plate 12, /, represents a perforated ax, while K shows a groove 

 for hafting. 



In plate 12, L, a head in the form of a knob is well developed. 



Plat« 12, M, X, represent implements in which the head is ex- 

 panded slightly on each side, the ends of the projections becoming 

 pointed. The specimen N has a well-developed shank, the edge of 

 which is curved, in places relatively sharp. It is one of the best- 

 formed and most carefully made of all the implements of this type. 



Modifications of different parts of these specimens are common; 

 thus a still further development of the head and an extension of the 

 two extremities is found in the implement, plate 12, 0. Its cutting 

 edge is curved to such an extent as to be the same as the general 

 curve of the margin of the blade. 



In plate 13, A, there is a well-marked separation of the cutting edge 

 and the sides of the blade. Plate 13, B, has a form similar to the 

 last, but differing from it in details which are apparent. 



The marked feature of plate 13, C, is the comparatively great 

 development of the head as compared to the rest of the implement, 

 and a marked secondary beveling of its edge, the original form being 

 practically identical with other members of this type, except in the 

 relatively deep lateral notch. 



The implement represented in plate 13, D, differs from all others 

 belonging to the group of notched axes in having its blade developed 

 to a relatively much gi-eater size at the expense of the head, which 

 is comparatively small. The form of the implement, when seen in 

 profile, is such that its edge is continued by a gentle curve into the 

 sides of the blade — a feature that might well be compared to an 

 almond-shaped or petaloid celt. The convex head is roughly indi- 

 cated by the two shallow notches. 



In plate 13, E, is represented a fine ax, the blade of which, when 

 seen in profile, is almost circular, while the head is lenticular, con- 

 tinued on each side into a sharp point. The distinguishing charac- 

 teristic of plate 13, F, is the presence of a circular pit situated in the 

 middle of one side of its blade. This pit is deeply and symmetrically 

 sunken and has a smooth surface. The edge of this ax is much 

 broken a^nd the head is slightly notched. 



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