﻿FIG. 
  12. 
  

  

  To 
  face 
  p. 
  79. 
  

  

  Ideal, 
  Section 
  Illustrating 
  the 
  Formation 
  of 
  a 
  Moraine 
  Terrace 
  at 
  the 
  

  

  Side 
  of 
  a 
  Glacier. 
  

  

  FIG. 
  13. 
  

  

  Ideal 
  Section 
  Showing 
  the 
  Interval 
  Structure 
  of 
  Grouped 
  Lateral 
  

  

  Moraine 
  Terraces. 
  

  

  