﻿/ 
  4 
  $Mm 
  

  

  Plate 
  13. 
  — 
  The 
  Northwest 
  Argentine 
  country. 
  Top: 
  Quebrada 
  del 
  Toro, 
  

   Salta. 
  Bottom: 
  Nevada 
  de 
  Cachi. 
  (Courtesy 
  Alfred 
  Metraux.) 
  

  

  