﻿19^ 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  PLATE 
  13 
  

  

  A 
  colony 
  of 
  the 
  coral 
  Favosites 
  niagarensis 
  Hall 
  which 
  

   lias 
  partially 
  overgrown 
  a 
  small 
  plantation 
  of 
  the 
  cyathophylloid 
  

   coral 
  Amplexus, 
  but 
  not 
  to 
  such 
  extent 
  as 
  to 
  interfere 
  with 
  the 
  

   calyces 
  of 
  the 
  latter 
  

  

  From 
  the 
  Niagaran 
  formation 
  near 
  Monticello, 
  Iowa. 
  The 
  

   print 
  has 
  been 
  kindly 
  loaned 
  by 
  Dr 
  Samuel 
  Calvin. 
  

  

  