﻿388 
  Scientific 
  Intelligence. 
  

  

  by 
  the 
  paleontological 
  studies 
  of 
  Newberry, 
  Cope 
  and 
  Marsh. 
  

   Most 
  of 
  the 
  later 
  workers 
  in 
  the 
  Rocky 
  Mountain 
  and 
  Plains 
  

   region 
  consider 
  the 
  origin 
  of 
  the 
  formations 
  as 
  settled, 
  or 
  give 
  addi- 
  

   tional 
  evidence 
  to 
  show 
  the 
  lacustrine 
  origin 
  of 
  some 
  smaller 
  areas 
  

   (e. 
  g. 
  Arapahoe 
  and 
  Denver 
  Formations 
  of 
  Colorado). 
  Naturally, 
  

   too, 
  the 
  text 
  books 
  most 
  widely 
  used 
  both 
  in 
  America 
  and 
  Europe 
  

   assert 
  unqualifiedly 
  the 
  existence 
  of 
  extensive 
  lakes 
  in 
  the 
  Rocky 
  

   Mountain 
  region 
  during 
  Tertiary 
  time. 
  

  

  To 
  the 
  unquestioned 
  acceptance 
  of 
  this 
  time-honored 
  interpre- 
  

   tation, 
  Professor 
  Davis 
  objects, 
  and 
  from 
  a 
  comparison 
  with 
  the 
  

   fluviatile 
  plains 
  of 
  the 
  Po 
  and 
  of 
  northern 
  India, 
  as 
  well 
  as 
  from 
  

   theoretical 
  considerations, 
  he 
  has 
  been 
  led 
  to 
  recognize 
  the 
  possi- 
  

   ble 
  non-lacustrine 
  origin 
  of 
  the 
  western 
  Tertiary 
  deposits. 
  This 
  

   possible 
  explanation 
  seems 
  to 
  be 
  very 
  closely 
  related 
  in 
  the 
  

   author's 
  mind 
  to 
  the 
  probable 
  explanation, 
  as 
  some 
  sentences 
  

   show 
  ; 
  e. 
  g. 
  " 
  as 
  far 
  as 
  the 
  published 
  descriptions 
  of 
  these 
  deposits 
  

   afford 
  evidence 
  of 
  their 
  detailed 
  structure, 
  it 
  appears 
  to 
  me 
  

   probable 
  that 
  streams 
  and 
  rivers 
  have 
  had 
  more 
  than 
  lakes 
  or 
  

   winds 
  to 
  do 
  with 
  their 
  formation, 
  and 
  hence 
  that 
  ' 
  fluviatile' 
  

   might 
  often 
  to 
  advantage 
  replace 
  'lacustrine' 
  in 
  describing 
  

   them 
  " 
  (p. 
  360). 
  As 
  an 
  aid 
  in 
  distinguishing 
  the 
  different 
  

   classes 
  of 
  deposits, 
  some 
  pages 
  are 
  devoted 
  to 
  a 
  useful 
  discussion 
  

   of 
  the 
  characteristics 
  of 
  lacustrine, 
  fluviatile 
  and 
  seolian 
  sedi- 
  

   ments. 
  

  

  The 
  object 
  of 
  this 
  paper, 
  as 
  announced 
  by 
  the 
  author, 
  " 
  is 
  to 
  

   promote 
  consideration, 
  rather 
  than 
  to 
  announce 
  conclusions," 
  and 
  

   it 
  is 
  more 
  than 
  probable 
  that 
  the 
  object 
  will 
  be 
  attained, 
  and 
  an 
  

   interesting 
  and 
  fruitful 
  discussion 
  called 
  out, 
  for 
  geologists 
  are 
  

   not 
  likely 
  to 
  abandon 
  the 
  lake 
  hypothesis 
  and 
  the 
  numerous 
  

   geological 
  and 
  paleontological 
  conclusions 
  based 
  upon 
  it 
  without 
  

   most 
  careful 
  consideration. 
  h. 
  e. 
  g. 
  

  

  6. 
  Text-Booh 
  of 
  Paleontology 
  by 
  Karl 
  A. 
  von 
  Zittel, 
  translated 
  

   and 
  edited 
  by 
  Chas. 
  R. 
  Eastman. 
  Vol. 
  I, 
  pp. 
  1-706, 
  with 
  147ft 
  

   wood 
  cuts. 
  New 
  York, 
  1 
  900 
  (The 
  Macmillan 
  Co.).— 
  With 
  the 
  pub- 
  

   lication 
  of 
  the 
  second 
  part, 
  beginning 
  with 
  page 
  353, 
  the 
  first 
  volume 
  

   of 
  this 
  important 
  work 
  is 
  completed. 
  It 
  includes 
  the 
  chapters 
  on 
  

   the 
  Protozoa, 
  Coelenterata, 
  Echinodermata, 
  Vermes, 
  Molluscoidea, 
  

   Mollusca 
  and 
  Arthropoda. 
  Notice 
  of 
  the 
  first 
  part 
  was 
  published 
  in 
  

   these 
  pages 
  when 
  it 
  first 
  appeared 
  (see 
  vol. 
  ii,p. 
  394). 
  A 
  character- 
  

   istic 
  feature 
  of 
  the 
  translation 
  is 
  the 
  free 
  revision 
  of 
  the 
  chapters 
  

   by 
  American 
  specialists. 
  The 
  Pelecypoda 
  is 
  thoroughly 
  revised 
  

   by 
  Dr. 
  Dall. 
  In 
  the 
  present 
  classification 
  the 
  primary 
  ordinal 
  

   groups 
  are 
  Prionodesmacea, 
  Anomalodesmacea, 
  Teleodesmacea. 
  

   The 
  hinge-teeth 
  furnish 
  the 
  more 
  important 
  characters 
  for 
  the 
  

   secondary 
  subdivision 
  of 
  the 
  ordinal 
  groups. 
  The 
  Gastropoda, 
  

   revised 
  by 
  Professor 
  Pilsbry, 
  retain 
  substantially 
  the 
  classifica- 
  

   tion 
  of 
  the 
  German 
  edition. 
  The 
  sub-class 
  Tetrabranchiata 
  of 
  

   the 
  Cephalopoda 
  has 
  received 
  a 
  complete 
  revision 
  at 
  the 
  hands 
  of 
  

   Professor 
  Hyatt 
  ; 
  the 
  arrangement 
  as 
  well 
  as 
  the 
  definition 
  of 
  

   the 
  groups 
  has 
  been 
  much 
  changed 
  ; 
  very 
  few 
  of 
  the 
  older 
  

  

  