﻿Plate 
  23 
  

  

  Types 
  of 
  chipped 
  flint 
  implements 
  not 
  arrow 
  points. 
  Figures 
  4 
  and 
  II 
  are 
  

   scrapers 
  and 
  7 
  is 
  a 
  rude 
  drill. 
  See 
  also 
  text 
  figure 
  21 
  

  

  