﻿Geology. 
  251 
  

  

  record 
  of 
  geological 
  observations 
  and 
  the 
  sound-induction 
  from 
  

   them 
  to 
  principles 
  concerning 
  the 
  nature 
  of 
  strata, 
  fossils, 
  crystals, 
  

   and 
  mountains. 
  Where 
  one 
  solid 
  object 
  is 
  contained 
  within 
  

   another, 
  as 
  a 
  fossil 
  shell, 
  or 
  a 
  crystal, 
  within 
  a 
  rock 
  ; 
  how 
  did 
  

   the 
  internal 
  object 
  come 
  to 
  exist 
  and 
  what 
  was 
  the 
  nature 
  of 
  the 
  

   surroundings 
  at 
  the 
  time 
  of 
  origin 
  ? 
  Thus 
  the 
  title 
  covers 
  the 
  

   field 
  of 
  geology. 
  The 
  work 
  antedates 
  the 
  real 
  rise 
  of 
  geology 
  by 
  

   more 
  than 
  a 
  century 
  and 
  is 
  of 
  importance 
  to 
  those 
  interested 
  in 
  

   the 
  history 
  of 
  science 
  : 
  if 
  the 
  time 
  had 
  been 
  ripe 
  it 
  might 
  well 
  

   have 
  led 
  on 
  to 
  a 
  fruitful 
  germination. 
  j. 
  b. 
  

  

  3. 
  Atlantic 
  Slope 
  Areas; 
  by 
  Pearl 
  G. 
  Sheldon. 
  Palaeon- 
  

   tographica 
  Americana, 
  Yol. 
  I, 
  No. 
  1, 
  101 
  pp., 
  16 
  pis. 
  Harris 
  

   Company, 
  Ithaca, 
  1916. 
  — 
  All 
  interested 
  in 
  the 
  Tertiary 
  Paleon- 
  

   tology 
  of 
  North 
  America 
  have 
  welcomed 
  the 
  useful 
  and 
  well 
  illus- 
  

   trated 
  " 
  Bulletins 
  of 
  American 
  Paleontology 
  " 
  which 
  have 
  been 
  

   issued 
  from 
  time 
  to 
  time 
  under 
  the 
  auspices 
  of 
  Professor 
  G. 
  D. 
  

   Harris 
  of 
  Cornell 
  University. 
  The 
  time 
  has 
  now 
  come 
  when 
  pub- 
  

   lication 
  in 
  quarto 
  form 
  of 
  more 
  monographic 
  papers 
  may 
  advan- 
  

   tageously 
  be 
  undertaken. 
  The 
  editor 
  of 
  the 
  Bulletins 
  now 
  offers 
  

   the 
  first 
  installment 
  of 
  such 
  a 
  series 
  under 
  the 
  name 
  of 
  " 
  Palseonto- 
  

   graphica 
  Americana, 
  Vol. 
  I, 
  No. 
  1." 
  This 
  comprises 
  a 
  paper 
  of 
  100 
  

   pages, 
  with 
  16 
  plates 
  quarto, 
  on 
  the 
  Tertiary 
  and 
  recent 
  species 
  of 
  

   the 
  genus 
  Area 
  from 
  the 
  Atlantic 
  slope, 
  with 
  references 
  to 
  Cretace- 
  

   ous 
  species 
  and 
  to 
  others 
  from 
  the 
  Antillean 
  area, 
  by 
  Pearl 
  G. 
  

   Sheldon. 
  This 
  includes 
  descriptions 
  of 
  five 
  new 
  forms. 
  The 
  

   excellent 
  quality 
  of 
  the 
  plates 
  deserves 
  special 
  mention, 
  consider- 
  

   ing 
  the 
  poor 
  quality 
  of 
  many 
  recent 
  paleontological 
  plates, 
  

   especially 
  of 
  the 
  European 
  Tertiaries. 
  It 
  is 
  to 
  be 
  hoped 
  that 
  the 
  

   enterprise 
  of 
  Professor 
  Harris 
  will 
  be 
  so 
  well 
  sustained 
  by 
  those 
  

   interested 
  in 
  this 
  subject 
  that 
  the 
  series 
  may 
  be 
  continued 
  

   indefinitely, 
  as 
  it 
  is 
  certain 
  that 
  the 
  riches 
  of 
  our 
  Tertiary 
  

   horizons 
  will 
  afford 
  material 
  for 
  many 
  years 
  to 
  come. 
  

  

  w. 
  H. 
  DALL. 
  

  

  4. 
  Iowa 
  Geological 
  Survey, 
  Annual 
  Report, 
  191^, 
  with 
  

   accompanying 
  papers. 
  George 
  F. 
  Kay, 
  State 
  Geologist. 
  Pp. 
  

   xxiii, 
  627, 
  with 
  72 
  plates 
  and 
  53 
  text 
  figures, 
  1916. 
  — 
  Besides 
  the 
  

   administrative 
  report 
  and 
  one 
  on 
  the 
  mineral 
  production 
  of 
  the 
  

   state 
  by 
  the 
  director 
  of 
  the 
  Survey, 
  this 
  volume 
  contains: 
  (1) 
  

   The 
  iron 
  deposits 
  near 
  Waukon, 
  by 
  J. 
  Y. 
  Howell 
  ; 
  (2) 
  Pleistocene 
  

   history 
  of 
  Iowa 
  River 
  valley, 
  by 
  M. 
  M. 
  Leighton 
  ; 
  (3) 
  Trilobites 
  

   from 
  the 
  Maquoketa 
  beds 
  of 
  Fayette 
  County, 
  by 
  A. 
  W. 
  Slocum 
  ; 
  

   (4) 
  The 
  origin 
  of 
  dolomites, 
  by 
  F. 
  M. 
  Yan 
  Tuyl 
  (a 
  summation 
  

   of 
  this 
  paper 
  appeared 
  in 
  this 
  Journal 
  for 
  September 
  1916) 
  ; 
  (5) 
  

   Physical 
  features 
  and 
  geologic 
  history 
  of 
  Des 
  Moines 
  valley, 
  by 
  

   J. 
  H. 
  Lees. 
  c. 
  s. 
  

  

  5. 
  New 
  York 
  State 
  Museum, 
  Twelfth 
  Report 
  of 
  the 
  Director. 
  

   Bull. 
  187, 
  1916, 
  pp. 
  192. 
  — 
  In 
  this 
  report 
  are 
  set 
  forth 
  the 
  activi- 
  

   ties 
  of 
  Director 
  John 
  M. 
  Clarke 
  of 
  the. 
  Museum 
  and 
  the 
  State 
  

   Geological 
  Survey, 
  of 
  the 
  State 
  Botanist, 
  Entomologist 
  and 
  

   Archeologist, 
  and 
  of 
  the 
  Zoology 
  Division. 
  Great 
  progress 
  has 
  

  

  