﻿6". 
  Roth 
  — 
  Publications 
  of 
  Fl. 
  Ameghino. 
  261 
  

  

  Art. 
  XXY. 
  — 
  Some 
  remarks 
  on 
  the 
  latest 
  publications 
  of 
  Fl. 
  

   Ameghino 
  ; 
  by 
  Santiago 
  Koth 
  (Museo 
  de 
  la 
  Plata). 
  

  

  In 
  the 
  " 
  Segundo 
  Censo 
  National 
  de 
  la 
  Republica 
  Argen- 
  

   tina.'' 
  189S, 
  i, 
  p. 
  111-125, 
  Fl. 
  Ameghino 
  published 
  a 
  paper 
  

   entitled: 
  " 
  Sinopsis 
  Geologica-Palaeontologica," 
  in 
  which 
  he 
  

   gives 
  a 
  systematic 
  account 
  of 
  the 
  fossil-bearing 
  deposits 
  of 
  

   Argentina. 
  His 
  divisions 
  and 
  correlations 
  of 
  the 
  different 
  hori- 
  

   zons 
  are 
  so 
  positive, 
  that 
  any 
  one, 
  who 
  is 
  not 
  well 
  acquainted 
  

   with 
  the 
  geology 
  of 
  the 
  Argentine 
  Republic, 
  must 
  believe 
  that 
  

   they 
  are 
  well 
  supported. 
  

  

  In 
  July 
  of 
  the 
  same 
  year 
  he 
  published 
  a 
  supplement 
  to 
  this 
  

   paper,- 
  in 
  which 
  the 
  sedimentary 
  and 
  eruptive 
  formations 
  

   between 
  Bahia 
  Blanca 
  and 
  the 
  Cordilleras 
  described 
  by 
  myselff 
  

   have 
  been 
  inserted 
  into 
  his 
  system. 
  

  

  In 
  regard 
  to 
  the 
  latter 
  point 
  I 
  should 
  like 
  to 
  express 
  briefly 
  

   my 
  own 
  views, 
  which 
  differ 
  from 
  those 
  of 
  Ameghino, 
  since 
  I 
  

   fear 
  that 
  the 
  latter 
  may 
  be 
  accepted 
  as 
  well 
  founded 
  — 
  as 
  

   has 
  happened 
  in 
  other 
  cases 
  — 
  when 
  I 
  have 
  left 
  them 
  unnoticed. 
  

   For 
  instance, 
  I 
  described 
  the 
  new 
  species 
  of 
  Toxoclon 
  elongatus, 
  

   which 
  Mercerat 
  has 
  declared 
  to 
  be 
  identical 
  with 
  Toxodon 
  

   giganteus. 
  The 
  latter 
  is 
  founded 
  upon 
  a 
  femur 
  from 
  Monte 
  

   Hermoso, 
  which, 
  as 
  may 
  be 
  seen 
  at 
  a 
  glance, 
  does 
  not 
  belong 
  

   at 
  all 
  to 
  the 
  genus 
  Toxoclon. 
  It 
  was 
  at 
  first 
  my 
  intention 
  to 
  

   make 
  no 
  reply 
  to 
  this, 
  but 
  I 
  have 
  seen, 
  much 
  to 
  my 
  regret, 
  

   that 
  this 
  failure 
  on 
  my 
  part 
  has 
  induced 
  Dr. 
  Trouessart 
  in 
  his 
  

   ; 
  * 
  Catalogus 
  Mammalium 
  " 
  to 
  give 
  Tox. 
  elongatus 
  as 
  a 
  synonym 
  

   of 
  Tox. 
  giganteus, 
  and 
  to 
  let 
  Dilobodon 
  stand 
  as 
  a 
  good 
  genus. 
  

   Trouessart, 
  of 
  course, 
  could 
  only 
  follow 
  the 
  literature, 
  since 
  he 
  

   did 
  not 
  possess 
  any 
  material 
  for 
  comparison, 
  and 
  the 
  same 
  

   reason 
  explains 
  numerous 
  other 
  errors 
  in 
  the 
  "Catalogus" 
  in 
  

   respect 
  to 
  the 
  Argentine 
  fauna. 
  Trouessart 
  has 
  taken 
  all 
  the 
  

   doubtful 
  facts 
  given 
  by 
  Ameghino 
  in 
  good 
  faith, 
  although 
  a 
  

   part 
  of 
  them 
  have 
  been 
  altered 
  meanwhile 
  by 
  Ameghino 
  himself. 
  

  

  Whoever 
  has 
  taken 
  pains 
  to 
  compare 
  Ameghino's 
  dates 
  in 
  

   his 
  different 
  papers 
  must 
  surely 
  be 
  struck 
  with 
  the 
  idea 
  that 
  

   they 
  cannot 
  be 
  taken 
  seriously, 
  since 
  he 
  frequently 
  changes 
  his 
  

   opinions, 
  and 
  abandons 
  views 
  he 
  propounded 
  very 
  positively 
  at 
  

   first. 
  Thus 
  in 
  1889^ 
  he 
  placed 
  the 
  Patagonian 
  beds 
  above 
  the 
  

   Santacruzian, 
  Paranense 
  and 
  Mesopotamian, 
  and 
  called 
  them 
  

   Oligocene 
  ; 
  in 
  1894§ 
  he 
  says, 
  that 
  the 
  Santacruzian 
  formation 
  

  

  * 
  Sinopsis 
  Geologica-Paleontologica, 
  Suplemento 
  (Adiciones 
  y 
  Correcciones) 
  

   Julio. 
  1*899. 
  La 
  Plata. 
  

  

  •f 
  Apunta3 
  sobre 
  la 
  Geologia 
  y 
  Paleoutologia 
  de 
  los 
  Territorios 
  Rio 
  Xegro 
  y 
  

   Xeuquen. 
  Anal. 
  Mus. 
  La 
  Plata. 
  1898. 
  

  

  % 
  Mamiferos 
  fosiles 
  de 
  la 
  Republica 
  Argentina. 
  

  

  j: 
  Enumeracion 
  synoptiqne 
  des 
  especes 
  des 
  Mammiferes 
  fossiles 
  des 
  formations 
  

   eocenes 
  de 
  Patagonie. 
  Buenos 
  Aires, 
  1894. 
  

  

  