﻿226 
  MISCONCEPTIONS 
  REGARDING 
  FORMER 
  GLACIAL 
  PERIODS. 
  

  

  period 
  of 
  time 
  if 
  the 
  land 
  were 
  high 
  enough. 
  Boulders 
  thus 
  formed 
  

   on 
  land 
  might 
  be 
  imbedded 
  in 
  a 
  marine 
  stratum 
  when 
  the 
  land 
  was 
  

   subsequently 
  depressed 
  without 
  indicating 
  their 
  age 
  or 
  origin. 
  The 
  

   contention 
  for 
  glacial 
  periods 
  was 
  superfluous. 
  

  

  Prof. 
  Blake 
  considered 
  that 
  the 
  previous 
  average 
  temperature 
  

   was 
  higher 
  in 
  a 
  refrigerating 
  earth. 
  Hence 
  there 
  was 
  plenty 
  of 
  

   evidence 
  of 
  more 
  life 
  in 
  the 
  Arctic 
  regions 
  in 
  past 
  epochs. 
  There 
  

   was 
  a 
  sort 
  of 
  negative 
  evidence 
  of 
  the 
  non-existence 
  of 
  successive 
  

   glacial 
  periods 
  in 
  the 
  absence 
  of 
  the 
  very 
  mixed 
  conglomerates 
  

   which 
  are 
  produced 
  from 
  the 
  disintegration 
  of 
  Boulder-clay 
  with 
  

   stones. 
  The 
  great 
  boulders 
  proved 
  very 
  little 
  one 
  way 
  or 
  the 
  

   other. 
  

  

  Rev. 
  E. 
  Hill 
  thought 
  the 
  paper 
  an 
  able 
  one 
  of 
  its 
  kind. 
  He 
  

   agreed 
  that 
  insufficiency 
  of 
  evidence 
  must 
  not 
  be 
  regarded 
  as 
  fatal 
  

   to 
  the 
  theory, 
  but 
  on 
  the 
  other 
  hand 
  demurred 
  to 
  allowing 
  that 
  

   imperfection 
  in 
  the 
  record 
  could 
  make 
  up 
  for 
  deficiency 
  of 
  proof. 
  

  

  