﻿M 
  ECONOMICAL 
  GEOLOGY. 
  

  

  a 
  

  

  No. 
  42. 
  Hard 
  sandstone 
  

  

  No. 
  43. 
  Very 
  dark 
  shale 
  4 
  

  

  No. 
  44. 
  Limestone 
  4 
  

  

  No. 
  45. 
  Jointed 
  flre-olay 
  g 
  

  

  No. 
  40. 
  Limestone 
  j 
  ,. 
  

  

  No. 
  17. 
  Jointed 
  flre-olay 
  j 
  

  

  No. 
  48. 
  1!1 
  uk 
  clod— 
  Coal 
  No. 
  11 
  ., 
  

  

  Ho. 
  40. 
  Limestone 
  3 
  

  

  No. 
  5(>. 
  Jointed 
  flre-olay 
  j 
  6 
  

  

  No. 
  51. 
  Limestone 
  1 
  

  

  No. 
  52. 
  Bituminous 
  shah- 
  g 
  

  

  No. 
  53. 
  Darkgray 
  Bhale.witb 
  plants 
  ......... 
  a 
  

  

  No. 
  54. 
  Bandetone. 
  with 
  Bait-water 
  ' 
  ''" 
  

  

  No. 
  55. 
  Dark 
  gray 
  shale 
  j 
  

  

  No. 
  50. 
  Conglomerate 
  limestone 
  ..... 
  8 
  

  

  No. 
  :>t. 
  Bash 
  coal— 
  Coal 
  No. 
  10 
  ".....'".. 
  i 
  

  

  No. 
  58. 
  Black 
  olod 
  4 
  

  

  No. 
  59. 
  Limestone, 
  partly 
  concretionary 
  x 
  

  

  No. 
  60. 
  Blackshale 
  — 
  

  

  Total 
  depth 
  

  

  This 
  shaft 
  terminates 
  apparently 
  not 
  very 
  far 
  above 
  the 
  horizon 
  

   of 
  the 
  Shoal 
  Creek 
  limestone, 
  which 
  lays 
  about 
  385 
  feet 
  above 
  the 
  

   coal 
  in 
  the 
  shafts 
  at 
  Sandoval 
  and 
  Centralia, 
  the 
  nearest 
  points 
  

   Xre 
  any 
  of 
  the 
  lower 
  coals 
  have 
  been 
  opened, 
  and 
  ,t 
  would 
  have 
  

   to 
  be 
  sunk 
  about 
  400 
  feet 
  further 
  to 
  reach 
  a 
  coal 
  seam 
  of 
  any 
  prac- 
  

   tical 
  value 
  for 
  deep 
  mining. 
  

  

  BUILDING 
  STONE. 
  

  

  Manv 
  valuable 
  quarries 
  of 
  building 
  stone 
  have 
  been 
  opened 
  in 
  tins 
  

   State 
  since 
  the 
  publication 
  of 
  the 
  preceding 
  volumes, 
  but 
  from 
  the 
  

   p 
  reBa 
  of 
  other 
  duties, 
  1 
  -as 
  not 
  able 
  to 
  give 
  as 
  much 
  time 
  to 
  then 
  

   eZination 
  as 
  was 
  necessary 
  to 
  enable 
  me 
  to 
  repori 
  fully 
  upon 
  

  

  ^Tne 
  location 
  of 
  the 
  Southern 
  Penitentiary 
  at 
  Chester 
  has 
  resulted 
  

   o| 
  . 
  B 
  nnpol 
  , 
  ill)t 
  industry, 
  in 
  connection 
  w*h 
  

  

  L 
  extensive 
  bed 
  8 
  of 
  limestone 
  ana 
  sandstone 
  which 
  had 
  ton* 
  been 
  

   known 
  to 
  occur 
  a. 
  thai 
  locality, 
  but 
  baa 
  remained 
  ™P«?"* 
  

   oXs 
  for 
  the 
  want 
  of 
  the 
  labor 
  and 
  capital 
  necessary 
  lor 
  their 
  full 
  

  

  development. 
  

  

  Thft1 
  division 
  of 
  the 
  lower 
  Carboniferous 
  formation 
  known 
  as 
  the 
  

   .,•,„..„, 
  Group" 
  comprises 
  several 
  beds 
  of 
  limestone, 
  sandstone 
  and 
  

  

  sSe 
  ana 
  it 
  ,1 
  u^m 
  the 
  1 
  r 
  pari 
  of 
  this 
  formation 
  that 
  the 
  ci* 
  

  

  of 
  Chester 
  and 
  the 
  Southern 
  Penitentiary 
  are 
  situated 
  rh 
  follow 
  

   ,„„ 
  section 
  will 
  show 
  the 
  relative 
  position 
  and 
  thickness 
  of 
  the 
  

   exposed 
  on 
  the 
  Penitentiary 
  grounds: 
  

  

  