﻿Fig. 
  2. 
  

  

  500 
  METERS 
  

  

  KILOMETER 
  

  

  Fig. 
  2. 
  Map 
  of 
  the 
  Cuzco 
  gravels, 
  showing 
  present 
  distribution 
  (light 
  shad- 
  

   ing) 
  and 
  supposed 
  former 
  extent 
  (dotted 
  line), 
  also 
  areas 
  of 
  bed 
  rock 
  (heavy 
  

   shading). 
  Topography 
  by 
  the 
  Peruvian 
  Expeditions 
  of 
  1911 
  and 
  1912. 
  

  

  Am. 
  Jour. 
  Sci. 
  

  

  2 
  

  

  -Fourth 
  Series, 
  Vol. 
  XXXVI, 
  No. 
  211.— 
  July, 
  1913. 
  

  

  