﻿Geology 
  and 
  Natural 
  History. 
  389 
  

  

  ordinal 
  or 
  family 
  names 
  appear 
  ; 
  the 
  generic 
  names 
  and 
  the 
  

   figures 
  are, 
  however, 
  substantially 
  the 
  same 
  as 
  in 
  the 
  original 
  

   edition. 
  A 
  note 
  on 
  page 
  592 
  informs 
  the 
  reader 
  that 
  "the 
  clas- 
  

   sification 
  and 
  diagnoses 
  are 
  condensed 
  from 
  an 
  exhaustive 
  mono- 
  

   graph 
  on 
  fossil 
  cephalopods 
  at 
  present 
  still 
  in 
  MS." 
  Prof. 
  A. 
  E. 
  

   Verrill 
  contributes 
  several 
  valuable 
  notes 
  regarding 
  structure 
  of 
  

   the 
  animal. 
  

  

  The 
  chapter 
  on 
  Dibranchiata 
  is 
  little 
  altered 
  in 
  the 
  translation. 
  

  

  The 
  chapter 
  on 
  Trilobita 
  is 
  not 
  a 
  translation, 
  but 
  an 
  article 
  

   prepared 
  for 
  the 
  volume 
  by 
  Professor 
  Beecher. 
  It 
  presents 
  his 
  

   own 
  classification, 
  which 
  is 
  based 
  chiefly 
  on 
  ontogeny 
  and 
  the 
  

   modification 
  of 
  the 
  free-cheeks 
  ; 
  a 
  character 
  which 
  under 
  the 
  

   term 
  facial 
  suture 
  plays 
  so 
  conspicuous 
  a 
  part 
  in 
  the 
  earlier 
  clas- 
  

   sification 
  of 
  Trilobites. 
  

  

  The 
  section 
  on 
  Ostracoda 
  is 
  abridged 
  from 
  a 
  fuller 
  treatment 
  

   of 
  the 
  group 
  prepared 
  by 
  Mr. 
  E. 
  O. 
  Ulrich; 
  and 
  Dr. 
  John 
  M. 
  

   Clarke 
  contributes 
  the 
  chapters 
  on 
  Phyllopoda, 
  Cirripedia 
  and 
  

   Phyllocarida, 
  also 
  adding 
  some 
  new 
  figures 
  to 
  their 
  sections 
  and 
  

   to 
  the 
  chapter 
  on 
  Merostomata. 
  

  

  Professor 
  J. 
  S. 
  Kingsley 
  revised 
  the 
  other 
  orders 
  of 
  Malacos- 
  

   traca 
  and 
  all 
  the 
  chapters 
  on 
  Arthropoda 
  have 
  received 
  his 
  expert 
  

   criticism. 
  

  

  The 
  chapter 
  on 
  Insects 
  is 
  revised 
  by 
  Professor 
  S. 
  H. 
  Scudder, 
  

   who 
  contributed 
  the 
  original 
  chapters 
  on 
  Myriapoda, 
  Arachnoidea 
  

   and 
  Insecta 
  to 
  the 
  larger 
  German 
  work; 
  " 
  Handbuch 
  der 
  Pale- 
  

   ontologie," 
  vol. 
  ii. 
  

  

  The 
  figures, 
  which 
  are 
  sharp 
  and 
  clean, 
  are 
  chiefly 
  those 
  of 
  the 
  

   original 
  edition, 
  though 
  with 
  many 
  additions 
  distributed 
  through 
  

   the 
  work 
  contributed 
  by 
  the 
  American 
  collaborators. 
  

  

  American 
  students 
  of 
  Paleontology 
  owe 
  a 
  debt 
  of 
  gratitude 
  to 
  

   the 
  editor 
  for 
  his 
  laborious 
  task 
  of 
  rendering 
  this 
  classic 
  work 
  

   into 
  the 
  English 
  language. 
  They 
  should 
  also 
  fully 
  appreciate 
  

   the 
  courtesy 
  shown 
  by 
  Professor 
  Zittel 
  to 
  Americans 
  in 
  permit- 
  

   ting 
  such 
  free 
  translation 
  of 
  his 
  work 
  to 
  be 
  made 
  ; 
  and 
  partic- 
  

   ularly 
  for 
  allowing 
  the 
  insertion, 
  in 
  place 
  of 
  translation 
  of 
  the 
  

   originals, 
  of 
  chapters 
  written 
  entirely 
  by 
  the 
  American 
  authors, 
  

   with 
  whose 
  views 
  he 
  is 
  not 
  always 
  in 
  accord. 
  w. 
  

  

  7. 
  Occurrence 
  of 
  Corundum 
  in 
  Canada. 
  — 
  Volume 
  viii, 
  Part 
  

   II, 
  1899, 
  of 
  the 
  Report 
  of 
  the 
  Bureau 
  of 
  Mines, 
  published 
  at 
  

   Toronto, 
  includes 
  an 
  interesting 
  article 
  by 
  W. 
  G. 
  Miller 
  (pp. 
  

   205-240) 
  on 
  the 
  corundum 
  areas 
  and 
  the 
  associated 
  minerals 
  of 
  

   Ontario; 
  this 
  is 
  a 
  continuation 
  of 
  the 
  discussion 
  in 
  the 
  volume 
  of 
  

   the 
  year 
  before 
  (this 
  Journal, 
  vii, 
  318). 
  This 
  report 
  gives 
  addi- 
  

   tional 
  facts 
  in 
  regard 
  to 
  the 
  distribution 
  of 
  corundum, 
  and 
  empha- 
  

   sizes 
  its 
  occurrence 
  in 
  igneous 
  rocks 
  of 
  the 
  following 
  types 
  : 
  

   (2) 
  syenite 
  (mica, 
  etc.) 
  ; 
  (2) 
  syenite-pegmatite 
  ; 
  (3) 
  nepheline 
  

   syenite; 
  (4) 
  anorthosite. 
  Another 
  paper 
  on 
  the 
  same 
  subject 
  by 
  

   Archibald 
  Blue 
  follows 
  (pp. 
  241-249), 
  while 
  A. 
  P. 
  Coleman 
  (pp. 
  

   250-253) 
  describes 
  a 
  nephelite-syenite 
  from 
  Dungannon 
  township, 
  

   Hastings 
  Co., 
  which 
  is 
  remarkable 
  for 
  carrying 
  numerous 
  small 
  

  

  