﻿U 
  S 
  NATIONAL 
  MUSEUM 
  

  

  PROCEEDINGS 
  Vni 
  ''f. 
  PLATE 
  12 
  

  

  i 
  

  

  

  ? 
  

  

  y. 
  

  

  r-y 
  

  

  _ 
  »/ 
  

  

  i 
  

  

  

  W^ 
  

  

  L> 
  

  

  i 
  

  

  