holmes] 



ABORIGINAL AMERICAN ANTIQUITIES PART I 



191 



cases they exhibit traces of wear on one surface, due, apparently, 

 to contact with the thumb, which served as a brace, as indicated in 

 fiffure 69. 



Fig. r«0. Suggested maooor of holdiug the quarry imploment. 



The sites to which the concretions were carried to be worked up 



are marivcd by ckisters of refuse, generally circular 



sh'ops^^^*^ Work- j^^ form, as if accumulated in and about lodge sites. 



The chipping hammers were roundish nodules or 



tough portions of chert chipped into convenient form. A study of 



the refuse shows that the shaping work was directed largely toward 



Fig. 70. Examples of the blades produced aud ready for hafting as hoes. Length 4 to 8 



inches. 



the roughing out of implement forms of several classes, as follows: 



(1) Large broad blades, varying from ovate-lanceo- 



Forms Produced late to triangular forms, and ranging from 3 to 18 



inches in length and from 2 to 7 inches in width (fig. 



70) ; {'2) wide short blades of diversified outline, notched near the top 



38657°— 19— Bull. 60, pt i 14 



