﻿[To 
  face 
  p. 
  xlvi. 
  

  

  Note. 
  — 
  April 
  27. 
  — 
  Since 
  the 
  passage 
  about 
  the 
  Keuper 
  beds 
  

   (p. 
  xlvi) 
  was 
  printed, 
  I 
  have 
  ascertained 
  that 
  the 
  rock-salt 
  of 
  

   Cheshire 
  does 
  not 
  lie 
  at 
  the 
  base 
  of, 
  but 
  only 
  low 
  down 
  in, 
  the 
  New 
  

   Eed 
  Marl. 
  In 
  the 
  deep 
  well 
  at 
  Rugby, 
  salt 
  water 
  rose 
  when 
  the 
  

   Lower 
  Keuper 
  Sandstone 
  (at 
  the 
  base 
  of 
  the 
  Marl) 
  was 
  pierced. 
  — 
  

   [A. 
  C. 
  R] 
  

  

  