pip. No^' isf' JOHN H. KERR RESERVOIR BASIN — MILLER 



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/3. 



Figure 20. — Typological series for 

 triangular points. /, Square base 

 and square edges; 2, square base 

 and concave edges; 3, square base 

 and convex edges; 4, square base 

 and straight serrate edges; 5, square 

 base and serrate concave sides; 6, 

 square base and serrate convex 

 sides; 7, square base with one edge 

 longer than the other; 8a, concave 

 base and concave sides with sharp 

 shoulders; Sb, concave base with 

 concave sides and rounded shoul- 

 ders; 9a, concave base and serrate 

 concave sides, sharp shoulders; 9b, 

 concave base, serrate concave edges 

 and rounded shoulders; 10, concave 

 base and convex sides; 11, concave 

 base and straight sides; 12, convex 

 base and convex sides; 13, convex 

 base and convex serrated sides; 14, 

 convex base with concave sides. (/5 

 (not shown), embraces all asym- 

 metrically sided forms.) 



