pip. K' 2¥]'^' JOHN H. KERR RESERVOIR BASIN — MILLER 77 



Figure 8. — Left-handed scraper held as it should be used. 



pear in association with other lithic artifacts attributable to early 

 hunting industries. 



Single-edged -flake scrapers are made from various sized, thin flakes 

 and usually of chert. Only one of the dorsal edges is retouched, while 

 the ventral surfaces range from flat or straight to slightly concave. 



Double-edged flake scrapers resemble the single-edged class with 

 the exception that retouching occurs along the two opposing dorsal 

 edges and the size of the flake is much larger, as a rule. In most in- 

 stances, work is performed, only on the fundamental working surfaces 

 but there are a few exceptions and these show that a certain amount 

 of labor was expended to bring the flake into the desired shape before 

 the scraping surface was worked upon. 



Pointed side scrapers were made from large to medium-sized flakes 

 of chert whose dorsal surface displays the bulb of percussion created 

 in casting off the flake from a core. 



Many of the ubiquitous prismatic flakes show exceedingly fine chip- 

 ping along one or more of the dorsal edges. This chipping is prob- 

 ably not the result of intentional or purposeful chipping but may be 

 the result of momentarily using fresh sharp-edged flakes as cutting 

 instruments, which are discarded when either the job is done or the 

 edires become too dull to cut. 



