﻿r58 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  Acknowledgments 
  

  

  To 
  Professors 
  R. 
  S. 
  Tarr, 
  A. 
  C. 
  Gill, 
  and 
  G. 
  D. 
  Harris, 
  of 
  the 
  

   geological 
  department 
  of 
  Cornell 
  university, 
  the 
  author 
  wishes 
  to 
  

   express 
  his 
  obligation 
  and 
  appreciation 
  for 
  the 
  interest 
  manifested 
  in 
  

   his 
  work 
  while 
  a 
  student 
  in 
  the 
  university. 
  To 
  Professor 
  Tarr, 
  

   under 
  whose 
  kind 
  direction 
  this 
  investigation 
  was 
  undertaken, 
  he 
  is 
  

   specially 
  indebted 
  for 
  constant 
  invaluable 
  suggestions. 
  

  

  T. 
  L. 
  W. 
  

  

  