﻿La 
  SALLE 
  COUNTY. 
  49 
  

  

  Ft. 
  In. 
  

   No. 
  19. 
  Fire-clay 
  and 
  shale 
  50 
  

  

  No. 
  20. 
  Coal-No. 
  5 
  5 
  

  

  No. 
  21. 
  Fire-clay 
  3 
  9 
  

  

  No. 
  22. 
  Sandstone 
  5 
  4 
  

  

  No. 
  23. 
  Darkredshale 
  2 
  6 
  

  

  No. 
  24. 
  Sandstone 
  and 
  sandy 
  shale 
  42 
  11 
  

  

  No. 
  25. 
  Shale 
  71 
  

  

  No. 
  26. 
  Gray 
  clay 
  shale 
  18 
  6 
  

  

  No. 
  27. 
  CoalNo.2 
  3 
  6 
  

  

  Totaldepth 
  464 
  10 
  

  

  Both 
  the 
  lower 
  seams 
  are 
  -worked 
  in 
  this 
  shaft, 
  and 
  they 
  furnish 
  

   all 
  the 
  coal 
  mined 
  in 
  the 
  vicinity 
  of 
  LaSalle 
  or 
  Peru 
  at 
  the 
  present 
  

   time, 
  but 
  it 
  is 
  quite 
  probable 
  that 
  when 
  a 
  careful 
  examination 
  of 
  the 
  

   upper 
  seam 
  is 
  made, 
  it 
  will 
  be 
  found 
  to 
  afford, 
  at 
  some 
  points, 
  a 
  

   fair 
  quality 
  of 
  coal. 
  It 
  is 
  unquestionably 
  the 
  representative 
  of 
  either 
  

   No. 
  6 
  or 
  7 
  of 
  the 
  general 
  section, 
  and 
  both 
  of 
  them 
  are 
  extensively 
  

   mined 
  in 
  other 
  portions 
  of 
  the 
  State. 
  

  

  Whether 
  the 
  Streator 
  coal, 
  and 
  the 
  upper 
  seam 
  in 
  the 
  shafts 
  at 
  

   LaSalle 
  and 
  vicinity, 
  are 
  identical, 
  is 
  a 
  point 
  I 
  have 
  been 
  unable 
  to 
  

   decide 
  with 
  certainty, 
  as 
  no 
  fossils 
  were 
  found 
  associated 
  with 
  the 
  

   latter 
  at 
  the 
  only 
  localiiy 
  where 
  its 
  outcrop 
  could 
  be 
  seen, 
  and 
  the 
  

   associated 
  strata 
  afford 
  no 
  satisfactory 
  evidence 
  on 
  this 
  point. 
  

  

  The 
  character 
  of 
  the 
  deep-lying 
  formations 
  beneath 
  the 
  southern 
  

   part 
  of 
  LaSalle 
  county 
  was 
  fully 
  determined 
  by 
  the 
  artesian 
  boring 
  

   at 
  Streator, 
  and 
  I 
  am 
  indebted 
  to 
  Dr. 
  E. 
  Evans 
  for 
  the 
  following 
  

   record 
  of 
  this 
  well 
  : 
  

  

  Ft. 
  

   No. 
  1. 
  Drift-clay, 
  sand 
  and 
  gravel 
  30 
  

  

  No. 
  2. 
  Coal 
  Measures 
  211 
  

  

  No. 
  3. 
  Trenton 
  limestone 
  203 
  

  

  No. 
  4. 
  St. 
  Peters 
  sandstone 
  225 
  

  

  No, 
  5. 
  White 
  limestone 
  90 
  

  

  No. 
  6. 
  White 
  sandstone 
  •- 
  133 
  

  

  No. 
  7. 
  White 
  limestone 
  211 
  

  

  No. 
  8. 
  White 
  sandstone 
  37 
  

  

  No. 
  9. 
  Dark 
  gray 
  limestone 
  50 
  

  

  No. 
  10. 
  Fine 
  reddish 
  sandstones 
  15 
  

  

  No. 
  11. 
  Dark 
  gray 
  limestone 
  13 
  

  

  No. 
  12. 
  White 
  and 
  brown 
  sand 
  1 
  

  

  No. 
  13. 
  Gray 
  limestone 
  18 
  

  

  No. 
  14. 
  White 
  and 
  brown 
  sandstone 
  168 
  

  

  No. 
  15. 
  Blue 
  shale 
  100 
  

  

  No. 
  16. 
  Dark 
  limestone 
  73 
  

  

  No. 
  17. 
  Variegated 
  sandstone 
  187 
  

  

  No. 
  18. 
  Soft 
  limestone 
  60 
  

  

  No, 
  19. 
  Variegated 
  seales 
  158 
  

  

  No. 
  20. 
  Dark 
  red 
  sandstone 
  80 
  

  

  No. 
  21. 
  Blue 
  shale 
  50 
  

  

  No. 
  22. 
  Bluish, 
  drab 
  and 
  buff 
  limestone 
  383 
  

  

  Totaldepth 
  2,496 
  

  

  —4 
  

  

  