Pap. nT22Y' CORALVILLE RESERVOIR — CALDWELL 121 



II. Stemmed points — Continued 



B. Triangular point with sloping shoulder and flat base (fragmentary) 



(13JH202-401). Plate 23, w. 



Body : Elongate, isoscelene outline, narrow sloping shoulders, parallel- 

 sided stem, flat base. 



Length: Unknown. 



Width : 26.5 mm. 



Thickness : 9.0 mm. 



Cross section : Biconvex. 



Technique: Percussion, well controlled. 



Depth : 0.5-1.0 feet below surface datum, square C2. 



C. Miscellaneous points with slightly contracting stems (fragmentary, basal 



portions only) (sample: 2). Plate 23, fc. 

 Depth : 0.0-0.5 feet below surface datum, squares CI, A2z. 



III. Knives and scrapers. 



A. Half-circular knife, retouched about entire periphery (13JH202-283). 



Plate 24, c. 

 Length : 57.5 mm. 

 Width: 42.0mm. 

 Thickness: 6.5 mm. 

 Cross section : Biconvex. 

 Technique: Percussion. 

 Depth : 0.5-1.0 feet below surface datum, square B3. 



B. Trapezoidal knife with one beveled, "sabre-like" extremity (13JH202- 



495). Plate 24, d. 

 Length : 50.0 mm. 

 Width : 27.0 mm. 

 Thickness: 5.5 mm. 



Cross section : Biconvex but quite flattened. 

 Technique: Percussion. 

 Depth : 1.5-2.0 feet below surface datum, square Dl. 



C. Asymmetric knives with excurvate edge (sample: 3). Plate 24, g. 



Range of length : 39.0-66.0 mm. 

 Range of width : 21.0-29.5 mm. 

 Range of thickness : 4.5-7.0 mm. 

 Cross section : Plano-convex. 

 Technique: Percussion. 



Depth : 0.0-0.5 feet ; 1.5-2.0 feet below surface datum, squares F2 and 

 E2, respectively. 



D. Irregular flakes with one or more retouched edges (sample: 9). 



Depth : 0.0-1.0 feet ; 1.5-2.5 feet ; 3.0-3.5 feet below surface datum, in 

 squares CI, C3, B2, Dl, and El. 



E. Chipping debris, unaltered flakes, possibly used as scrapers (sample: 6). 



Distributed discontinuously from surface to the 4.0 foot depth. 



IV. Celts and choppers. 



A. Grooved ax, fragmentary (13JH202-274). Plate 25, c. 



Form: Polished groove (% circumference), smooth polished poll, re- 

 maining surface unaltered. 

 Length: 86.5 mm. 

 Width: 59.5 mm. 

 Thickness : 29.0 mm. 

 Cross section : Plano-convex. 

 Technique: Pecking, polishing. 

 Depth : 4.0-4.5 feet below surface datum, square B2. 



