﻿EOCENE 
  SERIES 
  

  

  Midway 
  Stage 
  

   Localities 
  

  

  Rocky 
  Spring 
  cJnarh. 
  — 
  On 
  the 
  road 
  from 
  Marthaville 
  to 
  Many 
  

   near 
  Rocky 
  Spring 
  church 
  (N. 
  E. 
  X 
  Sec. 
  24, 
  8 
  N., 
  11 
  W., 
  

   on 
  the 
  Ranes' 
  place) 
  a 
  very 
  impure 
  limestone 
  is 
  met 
  with 
  in 
  the 
  

   bed 
  and 
  left 
  bank 
  of 
  a 
  small 
  stream. 
  Impure 
  as 
  it 
  is, 
  this 
  lime- 
  

   stone 
  is 
  said 
  to 
  have 
  been 
  used 
  for 
  lime 
  in 
  the 
  construction 
  of 
  

   Ft. 
  Jessup. 
  

  

  To 
  the 
  westward, 
  perhaps 
  one-half 
  mile 
  on 
  higher 
  ground, 
  a 
  

   well 
  is 
  said 
  to 
  have 
  passed 
  through 
  a 
  bed 
  containing 
  shells 
  in 
  

   abundance. 
  Another 
  well 
  to 
  the 
  north 
  one-fourth 
  mile, 
  

   encountered 
  the 
  same 
  stratum. 
  Calcareous 
  spots 
  (black 
  lands) 
  

   are 
  common 
  in 
  the 
  near-by 
  fields. 
  One 
  mile 
  to 
  the 
  east 
  a 
  yel- 
  

   lowish 
  gray 
  concretionary 
  boulder 
  was 
  found 
  in 
  a 
  bank 
  by. 
  the 
  

   roadside 
  (Marthaville-Fort 
  Jessup 
  road), 
  containing 
  cross-sec- 
  

   tions 
  of 
  the 
  shell 
  of 
  Cardium 
  ttwmeyi 
  {? 
  ) 
  . 
  Still 
  further 
  east- 
  

   ward, 
  about 
  one 
  mile, 
  ferruginous 
  layers 
  by 
  the 
  roadside 
  show 
  

   casts 
  of 
  Ivignitic 
  species. 
  

  

  This 
  is 
  doubtless 
  the 
  locality 
  referred 
  to 
  by 
  Hopkins 
  in 
  his 
  

   second 
  annual 
  report 
  (p. 
  10), 
  as 
  at 
  Mr. 
  Dillard's 
  place, 
  five 
  miles 
  

   north 
  of 
  Ft. 
  Jessup. 
  He 
  says 
  it 
  consists 
  almost 
  entirely 
  of 
  the 
  

   remains 
  of 
  Ostrea 
  georgiana, 
  an 
  immense 
  oyster 
  found 
  only 
  in 
  

   the 
  latest 
  Jackson 
  beds. 
  He 
  was 
  therefore 
  quite 
  mistaken 
  as 
  

   regards 
  the 
  species 
  of 
  oyster 
  here 
  represented 
  as 
  well 
  as 
  in 
  

   horizon. 
  

  

  King' 
  s 
  salt 
  works. 
  — 
  We 
  can 
  scarcely 
  doubt, 
  from 
  the 
  state- 
  

   ments 
  of 
  Hilgard, 
  that 
  here 
  are 
  to 
  be 
  found 
  Cretaceous 
  beds 
  not 
  

   far 
  beneath 
  the 
  surface. 
  As 
  early 
  as 
  1869* 
  he 
  reports 
  the 
  find- 
  

   ing 
  of 
  Gyph(za 
  pitcheri 
  and 
  Exogyra 
  costata 
  in 
  some 
  old 
  well 
  bor- 
  

   ings 
  in 
  the 
  " 
  Salines 
  of 
  North 
  Louisiana," 
  though 
  no 
  particular 
  

   well 
  or 
  locality 
  is 
  mentioned. 
  In 
  his 
  final 
  report, 
  however, 
  

  

  * 
  Am. 
  Journal 
  Sci, 
  vol 
  48, 
  p. 
  342. 
  

  

  