﻿i8 
  Geological 
  Survey 
  of 
  Louisiana 
  [Sect. 
  

  

  sils 
  mentioned 
  in 
  Dr. 
  Bry's 
  letter 
  that 
  the 
  material 
  represented 
  

   was 
  Cretaceous, 
  and 
  from 
  a 
  letter 
  received 
  from 
  Dr. 
  Pitcher 
  

   states 
  that 
  the 
  ' 
  ' 
  ferruginous 
  sand 
  formation 
  ' 
  ' 
  (Cretaceous) 
  out- 
  

   crops 
  between 
  Alexandria 
  and 
  Natchitoches.* 
  It 
  is 
  hardly 
  nec- 
  

   essary 
  to 
  remark 
  that 
  neither 
  of 
  these 
  statements 
  is 
  supported 
  b}^ 
  

   our 
  present 
  knowledge 
  of 
  that 
  region. 
  

  

  Conrad. 
  — 
  In 
  the 
  Journal 
  of 
  the 
  Philadelphia 
  Academy 
  of 
  

   Natural 
  Sciences, 
  vol. 
  7, 
  1834, 
  p. 
  120, 
  T. 
  A. 
  Conrad 
  refers 
  to 
  

   the 
  shells 
  found 
  in 
  connection 
  with 
  the 
  Basilosaurus 
  to 
  the 
  

   Eocene 
  series, 
  and 
  states 
  that 
  the 
  commonest 
  fossil 
  is 
  Corbula 
  

   oniscus, 
  a 
  common 
  Claiborne 
  fossil. 
  He 
  states 
  that 
  the 
  bones 
  

   were 
  doubtless 
  from 
  a 
  nearby 
  Cretaceous 
  stratum, 
  not 
  from 
  the 
  

   the 
  Eocene 
  as 
  stated 
  by 
  Harlan. 
  

  

  In 
  the 
  Proceedings 
  of 
  the 
  Philadelphia 
  Academy 
  of 
  Natural 
  

   Sciences 
  for 
  1841, 
  p. 
  33, 
  Conrad 
  describes 
  one 
  of 
  the 
  mollus- 
  

   can 
  species 
  found 
  at 
  the 
  same 
  locality. 
  He 
  names 
  it 
  Cardiuvi 
  

   jiicolle 
  H 
  din& 
  gives 
  its 
  provenance 
  as 
  " 
  Green 
  clay, 
  50 
  feet 
  high, 
  

   right 
  bank 
  of 
  the 
  Washita 
  river, 
  Monroe 
  County, 
  La." 
  The 
  

   same 
  fossil 
  is 
  described 
  on 
  p. 
  190, 
  vol. 
  8, 
  of 
  the 
  Journal 
  of 
  the 
  

   same 
  society. 
  

  

  DemeriL\ 
  — 
  Harlan's 
  description 
  of 
  the 
  Basilosatinis 
  soon 
  

   attracted 
  the 
  attention 
  of 
  the 
  French 
  savants. 
  M. 
  Demeril 
  in 
  

   1838 
  pointed 
  out 
  the 
  true 
  character 
  of 
  the 
  animal. 
  He 
  says, 
  

   "As 
  to 
  the 
  Basilosaurus 
  presented 
  for 
  comparison, 
  it 
  must 
  be 
  

   admitted 
  that 
  the 
  vertebrae 
  believed 
  to 
  have 
  come 
  from 
  this 
  fossil 
  

   seem 
  rather 
  to 
  be 
  from 
  a 
  cetacean 
  than 
  a 
  reptile. 
  ' 
  ' 
  

  

  Carpenter. 
  — 
  During 
  the 
  same 
  period 
  William 
  Carpenter 
  was 
  

   gathering 
  together 
  information 
  on 
  the 
  geology 
  of 
  the 
  southern 
  

   part 
  of 
  Louisiana. 
  He 
  records 
  the 
  finding 
  of 
  vertebrate 
  remains 
  

   in 
  two 
  localities. 
  One 
  on 
  little 
  Bayou 
  Sara 
  in 
  the 
  parish 
  of 
  West 
  

   Feliciana 
  where 
  he 
  found 
  teeth 
  and 
  fragments 
  of 
  the 
  jaw 
  of 
  a 
  

   mastodon, 
  and 
  a 
  tooth 
  of 
  an 
  Eqnus, 
  much 
  larger 
  than 
  the 
  modern 
  

   horse. 
  This 
  he 
  figures 
  in 
  the 
  American 
  Journal 
  of 
  Science, 
  vol. 
  

  

  *Am. 
  Jour. 
  Sci., 
  vol. 
  23, 
  pp., 
  288, 
  1S33. 
  Also 
  Synopsis 
  of 
  the 
  Organic 
  

   Remains 
  of 
  the 
  Cretaceous 
  Group 
  of 
  the 
  United 
  States, 
  by 
  Samuel 
  George 
  

   Morton. 
  Phila., 
  1834. 
  

  

  fCompte 
  Rendu 
  des 
  Seances 
  de 
  I'Academiedes 
  Sciences, 
  Oct. 
  22, 
  1838, 
  

   Paris. 
  

  

  