﻿610 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  across 
  the 
  road 
  from 
  Kilmejer's 
  hotel. 
  The 
  clay 
  is 
  pure 
  white 
  and 
  

   some 
  of 
  it 
  contains 
  97^ 
  of 
  clay 
  substance. 
  It 
  is 
  extremely 
  refrac- 
  

   tory, 
  as 
  shown 
  by 
  the 
  tests 
  given 
  in 
  a 
  later 
  part 
  of 
  the 
  report. 
  At 
  

   the 
  time 
  of 
  my 
  visit 
  the 
  workings 
  were 
  not 
  deep 
  enough 
  to 
  show 
  

   the 
  relations 
  of 
  the 
  clay 
  deposit. 
  

  

  As 
  the 
  Cretaceous 
  clays, 
  kaolins 
  and 
  yellow 
  gravels 
  are 
  a 
  con- 
  

   tinuation 
  of 
  the 
  belt 
  extending 
  across 
  I^ew 
  Jersey, 
  the 
  history 
  of 
  

   their 
  deposition 
  is 
  the 
  same.-"^ 
  

  

  The 
  following 
  analysis 
  of 
  the 
  so-called 
  kaolin 
  from 
  Campbell's 
  

   pit 
  on 
  Staten 
  Island 
  is 
  given 
  in 
  the 
  ^ew 
  Jersey 
  clay 
  report 
  cited 
  

   above. 
  

  

  Silicic 
  acid 
  and 
  sand. 
  93 
  . 
  70 
  

  

  AI2O3 
  and 
  F2O3 
  6.70 
  

  

  H2O 
  70 
  

  

  K2O 
  35 
  

  

  i^9.45 
  

  

  A 
  point 
  that 
  impresses 
  itself 
  on 
  one's 
  notice 
  is 
  the 
  abrupt 
  change 
  

   in 
  color 
  which 
  often 
  takee 
  place 
  in 
  the 
  clays 
  of 
  the 
  Staten 
  Island 
  

   Cretaceous, 
  the 
  same 
  bed 
  at 
  one 
  place 
  being 
  brilliantly 
  colored 
  by 
  

   iron, 
  while 
  only 
  a 
  few 
  feet 
  from 
  it 
  the 
  clay 
  may 
  be 
  perhaps 
  black, 
  

   or 
  even 
  nearly 
  pure 
  white. 
  

  

  The 
  Cretaceous 
  age 
  of 
  the 
  Staten 
  Island 
  clays 
  has 
  been 
  clearly 
  

   demonstrated 
  by 
  the 
  many 
  specimens 
  of 
  leaves 
  described 
  by 
  Dr 
  

   Arthur 
  Hollick 
  from 
  these 
  bedfe. 
  {See 
  " 
  Paleontology 
  of 
  the 
  Cre- 
  

   taceous 
  formation 
  on 
  Staten 
  Island,'' 
  Trans. 
  N. 
  Y. 
  acad. 
  sci. 
  1892. 
  

   11: 
  96-104, 
  pi. 
  1-4. 
  " 
  Additions 
  to 
  the 
  paleobotany 
  of 
  the 
  Cre- 
  

   taceous 
  formation 
  on 
  Staten 
  Island," 
  Ihid. 
  1892. 
  12 
  : 
  28-39; 
  

   1-4. 
  " 
  Additions 
  to 
  the 
  paleobotany 
  of 
  the 
  Cretaceous 
  formation 
  

   on 
  Staten 
  Island," 
  no. 
  2, 
  Annals 
  N. 
  Y. 
  acad. 
  sci. 
  11: 
  415-30) 
  

  

  In 
  the 
  last 
  of 
  these 
  papers 
  Dr 
  Hollick 
  states 
  that 
  it 
  was 
  previously 
  

   taken 
  for 
  granted 
  that 
  the 
  clays 
  on 
  Staten 
  laland 
  were 
  continuous 
  

  

  1 
  N. 
  J. 
  geol. 
  sur. 
  1878. 
  G. 
  H. 
  Cook. 
  Clays 
  of 
  New 
  Jersey. 
  

  

  