﻿GEOLOGY. 
  

  

  291 
  

  

  knowledge 
  of 
  their 
  properties, 
  there 
  can 
  be 
  none 
  as 
  to 
  

   those 
  of 
  the 
  marls 
  or 
  mineral 
  fertilizers 
  employed, 
  as 
  no 
  

   one 
  would 
  be 
  willing 
  to 
  apply 
  an 
  ingredient 
  to 
  his 
  land 
  

   which 
  a 
  simple 
  test 
  might 
  prove 
  to 
  be 
  not 
  only 
  unsuita- 
  

   ble, 
  but 
  absolutely 
  pernicious. 
  In 
  view 
  of 
  the 
  general 
  

   use 
  into 
  which 
  they 
  must 
  come 
  eventually, 
  when 
  their 
  

   existence 
  and 
  value 
  shall 
  be 
  better 
  known, 
  adequate 
  

   analyses 
  of 
  all 
  the 
  varieties 
  of 
  marls 
  which 
  abound 
  in 
  

   the 
  State 
  are 
  highly 
  desirable. 
  

  

  As 
  yet, 
  few 
  have 
  been 
  made, 
  and 
  we 
  are 
  in 
  a 
  -reat 
  

   degree 
  left 
  to 
  conjecture 
  their 
  probable 
  value 
  and 
  im- 
  

   portance 
  from 
  the 
  general 
  aspect 
  which 
  they 
  present 
  

   and 
  from 
  the 
  character 
  of 
  the 
  attendant 
  fossils, 
  as 
  well 
  

   as 
  from 
  the 
  effects 
  which 
  similar 
  substances 
  have 
  pro- 
  

   duced 
  in 
  other 
  States 
  where 
  they 
  have 
  been 
  extensively 
  

   used. 
  "^ 
  

  

  Such 
  analyses 
  as 
  I 
  have 
  been 
  able 
  to 
  procure 
  of 
  our 
  

   marls, 
  as 
  well 
  as 
  those 
  of 
  the 
  cotton 
  plant 
  and 
  our 
  

   mineral 
  waters 
  are 
  here 
  subjoined. 
  

  

  Analysis 
  of 
  Lake 
  Marl, 
  Washington, 
  Adams 
  Connfy. 
  

   Insoluble 
  silica 
  .... 
  1 
  7 
  IJ. 
  

  

  Peroxide 
  of 
  iron 
  

   Carbonate 
  of 
  lime 
  

   Potash 
  . 
  

   Soda 
  

  

  Magnesia 
  

   Soluble 
  silica 
  

  

  7.10 
  

  

  70.44 
  

  

  3.64 
  

  

  .36 
  

  

  .64 
  

  

  a 
  trace 
  

  

  99.62 
  

  

  • 
  This 
  will 
  be 
  found 
  a 
  valuable 
  fertilizer; 
  it 
  contains 
  

   almost 
  half 
  the 
  amount 
  of 
  potash 
  which 
  the 
  green-sands 
  

   of 
  New 
  Jersey 
  do."— 
  January, 
  1847: 
  Dr. 
  E3imons 
  

  

  