286 BUREAU OF AMERICAN ETHNOLOGY [Bull. 189 



3. Trapezoidal blade, bulb of percussion intact, minute retouches along 

 one edge, longitudinal flake scars with hinge fractures (39LM4^58) 

 (pi. 45, e). 



Length: 54.0 mm. 

 Width: 29.0 mm. 

 Thickness ; 8.0 mm. 



C. Scrapers: 



1. Large end scrapers, thick, heavy flakes, retouched from one surface to 

 form a thick body with a low keel (5 specimens) (pi. 4.5, t). 



Length: 29.0-58.0 mm. 

 TFM*/i; 25.0-42.0 mm. 

 Thickness: 10.0-15.0 mm. 



2. Irregular spalls with purposefully retouched or use-retouched edges (10 

 specimens) (pi. 45, k, /). 



D. MiSCEXLANEOUS STONE OBJECTS : 



1. Biface chopper or large blade formed from a massive flake, convex tri- 

 angular body, irregular convex bit (39LM4-22) (pi. 44, e). 



Length: 90. mm. 

 Width: 37.0 mm. 

 Thickness: 23.0 mm. 



2. Uniface chopper formed from a quartzite cobble spall, chopping edge 

 formed by removing large flakes from cortical surface (39LM4-61). 



Length: 109.0 mm. 

 Width: IQ.O mm. 

 Thickness: 37.0 mm. 



3. Polished celt (diorite), wide asymmetric bit tapering to a flattened poll, 

 bit edge crushed (39LM4-53) (pi. 44, &). 



Length: 120.0 mm. 

 Width: '^1.0 mm. 

 Thickness: 31.0 mm. 



4. Ovoid hammerstone of granite, deeply pecked over most of surface 

 (39LM4-132). 



Length: 72.0 mm. 

 Diameter: 61.0 mm. 



5. Arrowshaft smoothers of sandstone, elongate ovoid body, one flat sur- 

 face with deep longitudinal groove, body cross section irregularly convex 

 (4 specimens, 2 fragmentary) (pi. 44, c,d). 



Length: 40.0-78.0 mm. 

 Width: 30.0-40.0 mm. 

 Thickness: 18.0-26.0 mm. 



6. Fragmentary pipe bowl, material unknown, subrectangular bowl, thick 

 rectangular flange projecting around orifice (39LM4-41, 45) (pi. 45, I, o). 



7. Tubular concretion (?) (39LM4-98). 



III. BONE MATERIALS 



A. Bison metapodial flesher (fragmentary), cancellous tissue removed, proxi- 

 mal end of bone forms butt, body beveled abruptly to form a thin, serrated 

 bit (39LM4-168) (pi. 44, ^) . 



Length: 180.0 mm. 



Width: 32.0 mm. 



Thickness: 13.9 mm. 



