﻿Geological 
  Survey 
  of 
  I,ouisiana, 
  R'Eport, 
  1S99 
  

  

  Plate 
  51 
  

  

  s 
  

  

  u 
  

  

  

  6 
  — 
  7 
  

  

  See 
  e^rplanation, 
  page 
  jog 
  

  

  