﻿U 
  ECONOMICAL 
  GEOLOGY. 
  

  

  be 
  found 
  in 
  that 
  portion 
  of 
  the 
  State 
  of 
  sufficient 
  thickness 
  to 
  be 
  of 
  

   practical 
  value. 
  

  

  DANVILLE 
  BOltlNCi. 
  

  

  Ft. 
  In. 
  

  

  No. 
  1. 
  Coal 
  No. 
  7 
  

  

  No. 
  2. 
  Shale 
  :i 
  8 
  

  

  No. 
  3. 
  Coal 
  (lower 
  division 
  of 
  No. 
  7) 
  »; 
  

  

  No. 
  4. 
  Blue 
  and 
  gray 
  shale 
  17 
  n 
  

  

  No. 
  5. 
  Blackshale 
  1 
  11 
  

  

  No. 
  6. 
  Coal 
  No. 
  G 
  (Grape 
  creek) 
  3 
  11 
  

  

  No. 
  7. 
  Fire-clay 
  J 
  7 
  

  

  No. 
  8. 
  Limestone 
  and 
  shale 
  <i 
  5 
  

  

  No. 
  9. 
  Sandy 
  shales 
  16 
  5 
  

  

  No. 
  10. 
  Gray 
  shale 
  89 
  l» 
  

  

  No. 
  11. 
  Black 
  shale 
  8 
  

  

  No. 
  12. 
  Dark 
  gray 
  shale 
  Hi 
  i 
  

  

  No. 
  13. 
  Sandstone 
  and 
  shale 
  14 
  4 
  

  

  No. 
  14. 
  Coal 
  No. 
  4 
  l 
  6 
  

  

  No. 
  15. 
  Shale 
  !• 
  4 
  

  

  No. 
  10. 
  Coal 
  No. 
  3 
  

  

  No. 
  17. 
  Gray 
  shale 
  1 
  ( 
  

  

  No. 
  18. 
  Variegated 
  shales, 
  bottom 
  black 
  -.Si 
  

  

  No. 
  19. 
  CoalNo.2 
  t 
  1 
  

  

  No. 
  20. 
  Shale 
  and 
  limestone 
  

  

  No. 
  21. 
  Coal— 
  upper 
  division 
  of 
  No. 
  1 
  

  

  No. 
  22. 
  Blackshalo 
  S 
  

  

  No. 
  23. 
  Coal— 
  lower 
  division 
  of 
  No. 
  1 
  1 
  ;» 
  

  

  No. 
  24. 
  Shale 
  and 
  sandstone 
  66 
  l» 
  

  

  Total 
  2sti 
  5 
  

  

  This 
  boring 
  has 
  demonstrated 
  that 
  coal 
  No. 
  '2 
  may 
  he 
  found 
  in 
  

   this 
  portion 
  of 
  the 
  State 
  with 
  a 
  more 
  than 
  average 
  thickness 
  of 
  fon 
  

   feet, 
  and 
  the 
  superior 
  quality 
  of 
  the 
  coal 
  which 
  it 
  affords 
  will 
  stim- 
  

   ulate 
  those 
  largely 
  interested 
  in 
  coal 
  mining 
  operations 
  to 
  cany 
  their 
  

   shafts 
  down 
  to 
  this 
  horizon, 
  even 
  where 
  the 
  thicker 
  seams 
  al 
  

   are 
  well 
  developed. 
  The 
  Ellsworth 
  Coal 
  Company 
  are 
  entitled 
  to 
  

   the 
  credit 
  of 
  making 
  the 
  first 
  effort 
  to 
  ascertain 
  what 
  could 
  be 
  found 
  

   on 
  the 
  eastern 
  borders 
  of 
  the 
  Illinois 
  coal 
  field 
  below 
  the 
  horizon 
  of 
  

   coal 
  No. 
  ('). 
  

  

  On 
  the 
  western 
  border 
  of 
  the 
  coal 
  field 
  in 
  nearly 
  the 
  Bame 
  lati- 
  

   tude, 
  B 
  shaft 
  was 
  recently 
  sunk 
  through 
  the 
  lower 
  portion 
  of 
  the 
  

   Coal 
  Measures, 
  hut 
  developing 
  no 
  coal 
  that 
  was 
  more 
  than 
  thirty 
  

   inches 
  in 
  thickness. 
  For 
  the 
  following 
  details 
  of 
  the 
  shaft 
  at 
  Prairie 
  

  

  City, 
  in 
  McDonough 
  county, 
  I 
  am 
  indebted 
  to 
  Mr. 
  B, 
  V. 
  Worden, 
  

  

  of 
  that 
  place 
  : 
  

  

  It. 
  In 
  

  

  No 
  i 
  Boil 
  and 
  drift 
  ol&y 
  

  

  v 
  1 
  Blank 
  flasUe 
  k 
  l 
  

  

  No 
  H 
  < 
  annul 
  coal 
  Ho. 
  I? 
  B 
  

  

  No 
  i 
  < 
  laj 
  shale 
  n 
  

  

  