﻿Rocks, 
  in 
  Littleton, 
  New 
  Hampshire. 
  

  

  237 
  

  

  * 
  u. 
  

  

  

  s* 
  § 
  § 
  ,a 
  k' 
  sTfTTgTsE 
  

  

  probably 
  of 
  metamorphic 
  origin. 
  It 
  is 
  often 
  twinned 
  in 
  mul- 
  

   tiple 
  fashion. 
  The 
  remains 
  of 
  decomposed 
  biotite 
  flakes 
  ap- 
  

  

  