﻿Vol. 
  53.] 
  GENEKAL 
  INDEX. 
  647 
  

  

  Wrekin 
  (Shropshire), 
  pre-Cambr. 
  ' 
  Younger 
  Granites 
  ' 
  of 
  Sudbury 
  dis- 
  

  

  rocks 
  of, 
  lxxxi. 
  trict, 
  61. 
  

  

  Y 
  Graig 
  (Anglesey), 
  sections 
  descr., 
  Zamiopteris 
  (?) 
  ef. 
  glossopteroides, 
  504 
  

  

  351, 
  353. 
  & 
  pi. 
  xli. 
  figs. 
  4-5. 
  

  

  Yellow 
  Sandstones 
  (Cretac.) 
  of 
  Co. 
  Zircon 
  in 
  Antrim 
  Cretac. 
  rocks, 
  572 
  

  

  Antrim, 
  542, 
  549 
  et 
  seqq. 
  ; 
  chem. 
  & 
  et 
  seqg. 
  & 
  tables 
  ii-iii. 
  

  

  micromineral. 
  comp. 
  of, 
  572-574 
  ; 
  Zwart 
  Koppies 
  (Transvaal), 
  Lepido- 
  

  

  seq. 
  & 
  correl. 
  of, 
  589-591. 
  dendron 
  found 
  at, 
  313, 
  314, 
  315. 
  

  

  END 
  OF 
  VOL. 
  LIII 
  

  

  PRINTED 
  BY 
  TAYLOR 
  AND 
  FRANCIS, 
  RED 
  LION 
  COURT, 
  FLEET 
  STREET. 
  

  

  