﻿350 
  . 
  Scientific 
  Intelligence. 
  

  

  Trenton 
  period 
  strata 
  is 
  696, 
  and 
  113 
  species 
  from 
  the 
  rocks 
  of 
  

   the 
  Hudson 
  River 
  period. 
  

  

  The 
  body 
  of 
  the 
  volume 
  consists 
  of 
  exhaustive 
  descriptions 
  

   and 
  illustrations 
  of 
  the 
  iossil 
  species 
  of 
  the 
  Lower 
  Silurian 
  

   (Ordovician) 
  formations 
  of 
  Minnesota, 
  The 
  chapter 
  on 
  the 
  Lamel- 
  

   libranchiata 
  is 
  by 
  E. 
  O. 
  Ulrich 
  ; 
  the 
  author 
  has 
  succeeded 
  in 
  figur- 
  

   ing 
  a 
  good 
  number 
  of 
  interiors 
  and 
  hinge 
  teeth 
  of 
  these 
  ancient 
  

   types. 
  The 
  Ostracoda 
  are 
  also 
  described 
  by 
  Ulrich. 
  The 
  chapter 
  

   on 
  Trilobites 
  and 
  Cephalopoda 
  are 
  by 
  J. 
  M. 
  Clark. 
  

  

  Mr. 
  Ulrich 
  and 
  the 
  late 
  Mr. 
  W. 
  H. 
  Schofield 
  (who 
  died 
  during 
  the 
  

   preparation 
  of 
  the 
  work) 
  prepared 
  the 
  chapter 
  on 
  the 
  Gastropoda. 
  

   The 
  large 
  number 
  of 
  forms 
  related 
  to 
  Bellerophon 
  and 
  Bucania, 
  and 
  

   to 
  Pleurotomaria 
  and 
  associates 
  are 
  worthy 
  of 
  particular 
  notice. 
  

   The 
  authors 
  propose 
  the 
  erection 
  of 
  a 
  new 
  suborder, 
  Bellorophon- 
  

   tacea, 
  to 
  include 
  twenty-three 
  genera 
  divided 
  into 
  the 
  following 
  

   five 
  families; 
  viz.. 
  Cyrtolitidae, 
  Protowarthiidaa, 
  Bucaniidse, 
  

   Bellerophontiidas 
  and 
  Carinaropsidas. 
  A 
  number 
  of 
  new 
  genera 
  

   are 
  described. 
  Under 
  the 
  Pectinibranchiata 
  the 
  new 
  suborder 
  

   Eotomacea, 
  is 
  proposed 
  to 
  include 
  the 
  families 
  Rhaphistomidae, 
  

   Pleurotomariidaa, 
  Euomphalidae, 
  Trochidce, 
  and 
  some 
  others. 
  In 
  

   this 
  suborder 
  a 
  large 
  number 
  of 
  new 
  species 
  and 
  several 
  new 
  genera 
  

   are 
  described 
  from 
  the 
  Minnesota 
  material. 
  The 
  illustrations 
  are 
  

   numerous 
  and 
  well 
  done; 
  and 
  the 
  work 
  is 
  a 
  rich 
  contribution 
  to 
  

   knowledge 
  of 
  the 
  Ordovician 
  forms 
  of 
  North 
  America, 
  h. 
  s. 
  w. 
  

  

  3. 
  Geological 
  survey 
  of 
  Alabama; 
  Report 
  on 
  the 
  valley 
  regions 
  

   of 
  Alabama 
  {Paleozoic 
  strata) 
  by 
  Henry 
  McCalley, 
  Assistant 
  

   State 
  Geologist. 
  Parti. 
  The 
  Tennessee 
  valley 
  region, 
  pp. 
  1-436, 
  

   with 
  illustrations, 
  1896. 
  — 
  The 
  report 
  contains 
  a 
  valuable 
  amount 
  

   of 
  information 
  regarding 
  the 
  local 
  details 
  ot 
  stratigraphy 
  and 
  the 
  

   geological 
  products 
  of 
  economic 
  importance. 
  

  

  4. 
  Catalogue 
  and 
  index 
  of 
  contributions 
  to 
  North 
  American 
  

   Geology, 
  1732-1891; 
  by 
  N. 
  H. 
  Darton. 
  Bull. 
  No. 
  127, 
  U. 
  S. 
  

   Geol. 
  Surv., 
  pp. 
  1-1045. 
  1896. 
  — 
  This 
  index 
  is 
  a 
  work 
  which 
  will 
  

   be 
  of 
  the 
  greatest 
  time-saving 
  value 
  to 
  all 
  students 
  of 
  North 
  

   American 
  geology. 
  The 
  literature 
  is 
  recorded 
  alphabetically 
  

   under 
  both 
  author 
  and 
  subject 
  primary 
  titles, 
  and 
  under 
  each 
  pri- 
  

   mary 
  title 
  the 
  entries 
  are 
  arranged 
  secondarily 
  in 
  chronological 
  

   order. 
  

  

  Papers 
  and 
  books 
  purely 
  paleontologic 
  or 
  purely 
  mineralogic 
  

   are 
  not 
  included. 
  It 
  would 
  not 
  be 
  surprising 
  if 
  omissions 
  occur 
  

   even 
  in 
  a 
  work 
  so 
  carefully 
  done 
  as 
  this 
  one, 
  and 
  the 
  author 
  

   requests 
  readers 
  to 
  send 
  additional 
  references 
  or 
  information 
  for 
  a 
  

   supplement 
  to 
  him, 
  care 
  of 
  the 
  United 
  States 
  Geological 
  Survey, 
  

   Washington, 
  D. 
  C. 
  h. 
  s. 
  w. 
  

  

  5. 
  Description 
  geologique 
  de 
  la 
  partie 
  sud-est 
  de 
  la 
  11^-me 
  feuille 
  

   de 
  la 
  vii 
  zone 
  de 
  la 
  carte 
  generale 
  da 
  gouvernement 
  Tomsk 
  (Feuille 
  

   Balachoukct) 
  ; 
  par 
  P. 
  Ventjkoff 
  (in 
  Russian 
  with 
  French 
  

   resume), 
  pp. 
  1-151. 
  1896. 
  — 
  The 
  formations 
  described 
  in 
  this 
  

   paper 
  include 
  limestone 
  formations 
  containing 
  an 
  abundant 
  

   characteristic 
  Neodevonian 
  fauna, 
  above 
  which 
  are 
  Carboniferous 
  

  

  