﻿82 
  Scientific 
  Intelligence. 
  

  

  spondence 
  of 
  Molecular 
  States 
  ; 
  Molecular 
  Mixtures 
  ; 
  Electrolytic 
  

   Dissociation; 
  Equilibria 
  and 
  Their 
  Displacement; 
  Molecular 
  

   Magnitudes; 
  Molecular 
  Energy; 
  Electronic 
  Magnitudes. 
  

  

  The 
  gradation 
  of 
  the 
  material 
  and 
  presentation 
  from 
  the 
  most 
  

   elementary 
  to 
  the 
  very 
  advanced 
  has 
  been 
  admirably 
  accom- 
  

   plished. 
  The 
  author's 
  style 
  is 
  clear 
  and 
  smooth, 
  and 
  the 
  verbal 
  

   illustrations 
  are 
  very 
  apt 
  and 
  pleasing. 
  Mathematical 
  analysis 
  

   has 
  been 
  intentionally 
  reduced 
  to 
  a 
  minimum. 
  The 
  originality 
  

   of 
  the 
  exposition 
  is 
  such 
  as 
  to 
  cause 
  the 
  book 
  to 
  merit 
  the 
  serious 
  

   attention 
  not 
  only 
  of 
  the 
  "general 
  reader," 
  for 
  whom 
  it 
  was 
  

   primarily 
  written, 
  but 
  also 
  of 
  all 
  teachers 
  of 
  physics 
  who 
  feel 
  

   that 
  the 
  time 
  is 
  ripe 
  for 
  cautiously 
  breaking 
  away 
  from 
  tradi- 
  

   tional 
  methods 
  and 
  for 
  introducing 
  the 
  principles 
  and 
  well-estab- 
  

   lished 
  results 
  of 
  modern 
  research 
  into 
  the 
  first, 
  or 
  at 
  least 
  the 
  

   second, 
  year 
  courses. 
  The 
  writer 
  of 
  this 
  notice 
  desires 
  to 
  take 
  

   the 
  liberty 
  of 
  expressing 
  the 
  opinion 
  that 
  a 
  text-book 
  on 
  magnet- 
  

   ism 
  and 
  electricity 
  from 
  the 
  pen 
  of 
  the 
  original 
  author 
  would 
  

   doubtless 
  be 
  of 
  great 
  help 
  in 
  bringing 
  about 
  the 
  necessary 
  

   advances 
  and 
  transitions 
  in 
  the 
  pedagogy 
  of 
  college 
  physics. 
  

  

  h. 
  s. 
  u. 
  

  

  II. 
  Geology 
  and 
  Natural 
  History. 
  

  

  1. 
  Contributions 
  to 
  the 
  Geology 
  and 
  Paleontology 
  of 
  the 
  

   West 
  Indies; 
  prepared 
  under 
  the 
  direction 
  of 
  Thomas 
  Wayland 
  

   Vaughan: 
  (1) 
  Tertiary 
  calcareous 
  algae 
  from 
  the 
  islands 
  of 
  

   Saint 
  Bartholomeiv, 
  Antigua, 
  and 
  Anguilla, 
  by 
  Marshall 
  A. 
  

   Howe; 
  (2) 
  Fossil 
  Foraminifera 
  from 
  the 
  West 
  Indies, 
  by 
  J. 
  A. 
  

   Cushman; 
  (3) 
  Fossil 
  Bryozoa 
  from 
  the 
  West 
  Indies, 
  by 
  Ferdi- 
  

   nand 
  Canu 
  and 
  R. 
  S. 
  Bassler; 
  (4) 
  Tertiary 
  mollusUs 
  from 
  the 
  

   Leeward 
  Islands 
  and 
  Guoa, 
  by 
  C. 
  C. 
  Cooke 
  ; 
  (5) 
  West 
  Indian 
  

   Tertiary 
  decapod 
  crustaceans, 
  by 
  Mary 
  J. 
  Bathbun. 
  Carnegie 
  

   Institution 
  of 
  Washington, 
  Pub. 
  No. 
  291, 
  184 
  pp., 
  53 
  pis., 
  8 
  text 
  

   figs., 
  1919, 
  — 
  We 
  are 
  rapidly 
  coming 
  to 
  know, 
  through 
  the 
  great 
  

   activity 
  of 
  Mr. 
  Vaughan 
  and 
  his 
  colleagues, 
  the 
  invertebrate 
  

   faunas 
  that 
  are 
  at 
  the 
  basis 
  of 
  the 
  stratigraphy 
  of 
  the 
  Cenozoic 
  

   deposits 
  of 
  the 
  Gulf 
  of 
  Mexico, 
  the 
  Caribbean 
  islands, 
  and 
  bor- 
  

   dering 
  continents. 
  (1) 
  Mr. 
  Howe 
  describes 
  5 
  species 
  (4 
  new) 
  

   of 
  calcareous 
  algas. 
  (2) 
  The 
  Foraminifera 
  are 
  more 
  diversified 
  

   and 
  Cushman 
  remarks 
  on, 
  or 
  describes, 
  117 
  forms, 
  of 
  which 
  100 
  

   are 
  specifically 
  determined 
  (34 
  new). 
  And 
  yet 
  he 
  says; 
  "The 
  

   area 
  as 
  a 
  whole 
  has 
  still 
  been 
  scarcely 
  more 
  than 
  touched"; 
  a 
  

   far 
  greater 
  harvest 
  is 
  therefore 
  to 
  be 
  expected 
  and 
  a 
  more 
  

   detailed 
  stratigraphy 
  will 
  follow. 
  It 
  is 
  interesting 
  to 
  note 
  here 
  

   an 
  abundance 
  of 
  larger 
  orbitoid 
  genera, 
  forms 
  of 
  the 
  greatest 
  

   value 
  in 
  intercontinental 
  stratigraphic 
  correlation. 
  (3) 
  The 
  

   paper 
  by 
  Canu 
  and 
  Bassler 
  is 
  noticed 
  below. 
  (4) 
  Of 
  mollusks, 
  

   Mr. 
  Cooke 
  notes 
  about 
  100 
  forms 
  and 
  of 
  these 
  71 
  are 
  specifically 
  

  

  