80 BUREAU OF AMERICAN ETHNOLOGY [Bull. 1S2 



An ovate bifaced chert tool with a thinned, slightly concave base 

 can be classed either as a type of scraper or as a bunt. From the ap- 

 pearance of the tool and its unusual base, it can be assumed that tliis 

 object was once hafted, but we are not certain of this. This tool 

 measures 41 mm. in greatest length, 26 mm. across the widest portion, 

 which is 5 mm. from the beveled cutting edge, 10 mm. across the con- 

 cave base, 4 mm. in thickness at the base, and 9 mm. in thickness at 

 the thickest portion of the blade. 



This object, once a triangular-shaped flake, as shown by the flake 

 scar on one surface, was later fashioned by a combination of chipping 

 and retouching into its present shape. Over the years, since it was 

 last used, it has acquired a deep patination and the chipping and 

 flaking scars have been softened so that they are not quite as notice- 

 able as they must have been when the artifact was new. 



Gravers^ comparable to the types reported from the Lindenmeier 

 site in northern Colorado, occur not only as attaclunents to scrapers 

 but also as singular tools. Most of these tips are small in size, blunt 

 to sharp of point, triangular to diamond shaped in cross section, and 

 formed by delicately chipping away the lateral sides and leaving un- 

 touched a flat basal section (pi. 26, &, c, <Z, ^, h) . Graver tips usually 

 occur in chert forms in which the flakes are much larger than those 

 associated with the microlithic industry of the Grassy Creek site, 

 44Mc53. It is not unusual for two or more graver tips to occur on the 

 same flake or tool. 



A number of drills (pi. 27) and/or perforators, made of coarse 

 and nontranslucent stones, consist of 10 chert, 4 rhyolite, and 3 quartz- 

 ite specimens. Of the 17 specimens recovered 5 have expanded bases, 

 6 have bases that are elliptical in outline, 4 have winged bases, 1 has 

 a bifurcated base, and 1 has an expanded, side-notched, rounded base. 



In the expanded based forms, there are two chert, two quartzite, and 

 one rhyolite specimens. With the exception of one of the quartzite 

 specimens, all have been made from relatively flat flakes. The excep- 

 tion has been flaked rather carefully so that the elongated base is 

 elliptical in cross section as the result of rather carefully placed col- 

 lateral chipping, which has formed a semismoothed ridge down the 

 central portion on either side. The blade portion of all specimens 

 was reduced rather abruptly to the semiblunt tip. 



The six elliptical specimens are, as a group, not very well made. 

 Four of these objects were made of chert, while the remaining two 

 were fashioned from rhyolite. Of this group four were made by 

 percussion flaking, while the remaining two were pressure chipped. 

 As a class they are fairly uniform as to shape and size ; lengths vary 



