﻿ILLUSTRATING 
  THE 
  GeNER 
  

  

  [To 
  face 
  p. 
  584. 
  

  

  Enclosure 
  

  

  in 
  upper 
  pabt 
  

  

  of 
  Yellow 
  

  

  Sandstone. 
  

  

  Large 
  grains 
  

  

  numerous 
  and 
  

  

  rounded. 
  

  

  plough 
  Bat 
  Chalk. 
  

  

  Inoceea 
  

  

  BAND! 
  

  

  K 
  6 
  FEET 
  

   BOVE. 
  

  

  Chalk 
  12 
  feet 
  i 
  Chalk 
  18 
  feet 
  

   above. 
  above. 
  

  

  Larger 
  g 
  

   variable, 
  re 
  led 
  grains, 
  

   and 
  su'ban 
  

  

  Small 
  angular 
  

   grains. 
  

  

  Very 
  rare. 
  

  

  Chalced*. 
  

   replacem 
  

  

  films. 
  Cnalcedonic 
  films. 
  

  

  Chalcedonic 
  films 
  

   abundant. 
  

  

  Ortboclase 
  rare. 
  

  

  Musco 
  

   abund; 
  

  

  Muscovite-flakes. 
  

  

  Black 
  and 
  

  

  brown 
  cry 
  

  

  numero 
  

  

  One 
  fragment. 
  

  

  Rounded 
  grains 
  Good 
  cry 
  

  

  numerous. 
  frequer 
  

  

  )eep-red 
  and 
  yellow 
  Deep-red 
  

   grains 
  numerous. 
  yellow 
  frag 
  

  

  One 
  twin 
  of 
  rutile. 
  

  

  Perfect 
  crystals 
  

   common. 
  

  

  Frequent. 
  

  

  Green 
  films 
  

   common. 
  

  

  Fairly 
  abundant. 
  

  

  Perfect 
  cr 
  

   commc 
  

  

  Often 
  as 
  

  

  of 
  Hexact 
  i 
  

  

  mesh(' 
  

  

  egular 
  

   gates 
  and 
  

   of 
  sponge- 
  

   icules. 
  

  

  Casts 
  of 
  sponge- 
  

   spicules 
  and 
  

   foraminifera. 
  

  

  Sponge- 
  and 
  

   foraminiferal 
  cast* 
  

  

  Well 
  crystallized. 
  

  

  Very 
  abui 
  

  

  Limonitic 
  rods 
  

   abundant. 
  

  

  Cubic 
  crj 
  

   and 
  aggre 
  

  

  