﻿Geology 
  and 
  Natural 
  History. 
  161 
  

  

  8°, 
  124 
  pp., 
  28 
  pi. 
  — 
  The 
  perception 
  of 
  the 
  importance 
  of 
  the 
  fact 
  

   that 
  considerable 
  areas 
  of 
  previously 
  unrecognized 
  ancient 
  rhyo- 
  

   litic 
  lavas 
  occur 
  along 
  the 
  Atlantic 
  coast 
  and 
  in 
  the 
  Appalachian 
  

   region 
  is 
  due 
  to 
  the 
  late 
  Pkof. 
  G. 
  H. 
  Williams, 
  and 
  to 
  his 
  keen- 
  

   ness 
  and 
  enthusiasm 
  we 
  owe 
  primarily 
  the 
  appearance 
  of 
  this 
  

   memoir, 
  and 
  the 
  one 
  noticed 
  in 
  the 
  following 
  section. 
  In 
  the 
  

   present 
  work 
  Miss 
  Bascom 
  has 
  selected 
  a 
  small 
  and 
  typical 
  area 
  

   and 
  has 
  studied 
  it 
  thoroughly 
  in 
  the 
  field 
  and 
  the 
  material 
  col- 
  

   lected 
  with 
  equal 
  thoroughness 
  in 
  the 
  laboratory. 
  Especially 
  in 
  

   the 
  study 
  of 
  the 
  characteristic 
  structures 
  of 
  these 
  ancient 
  acid 
  

   lavas, 
  the 
  ways 
  in 
  which 
  they 
  have 
  been 
  altered 
  and 
  modified 
  

   and 
  the 
  means 
  and 
  criteria 
  by 
  which 
  they 
  may 
  be 
  recognized, 
  is 
  

   the 
  work 
  a 
  valuable 
  one, 
  which 
  must 
  serve 
  as 
  a 
  model 
  for 
  investi- 
  

   gators 
  of 
  such 
  rocks. 
  It 
  is 
  illustrated 
  with 
  a 
  large 
  number 
  of 
  

   excellent 
  plates 
  which 
  add 
  greatly 
  to 
  its 
  value. 
  It 
  is 
  impossible, 
  

   in 
  the 
  brief 
  limits 
  of 
  this 
  notice, 
  to 
  do 
  more 
  than 
  to 
  call 
  the 
  

   attention 
  of 
  the 
  petrographer 
  (and 
  geologist 
  as 
  well) 
  to 
  its 
  impor- 
  

   tance, 
  l. 
  v. 
  p. 
  

  

  13. 
  The 
  geology 
  of 
  the 
  Fox 
  Islands, 
  Maine; 
  by 
  Geo. 
  Otis 
  

   Smith. 
  (Inaug. 
  Diss. 
  Johns 
  Hopkins 
  Univ., 
  1896.) 
  — 
  What 
  has 
  

   been 
  said 
  in 
  the 
  foregoing 
  applies 
  well 
  to 
  this, 
  which 
  is 
  chiefly 
  a 
  

   study 
  of 
  a 
  series 
  of 
  ancient 
  lavas 
  occurring 
  off 
  the 
  coast 
  of 
  Maine. 
  

   The 
  geology 
  of 
  the 
  islands 
  has 
  been 
  mapped 
  and 
  the 
  occurrence 
  

   of 
  a 
  small, 
  interesting 
  area 
  of 
  the 
  Niagara 
  is 
  described, 
  in 
  which 
  

   80 
  species 
  of 
  fossils 
  have 
  been 
  found 
  by 
  Prof. 
  Beecher. 
  A 
  

   variety 
  of 
  interesting 
  acid 
  volcanics 
  have 
  been 
  carefully 
  studied 
  

   and 
  the 
  results 
  given. 
  The 
  work 
  contains 
  one 
  plate 
  and 
  an 
  excel- 
  

   lent 
  map 
  on 
  a 
  scale 
  of 
  a 
  mile 
  to 
  the 
  inch. 
  l. 
  y. 
  p. 
  

  

  14. 
  The 
  Cell 
  in 
  Development 
  and 
  Inheritance 
  / 
  by 
  Edmund 
  B. 
  

   Wilson, 
  pp. 
  1-371. 
  New 
  York 
  and 
  London, 
  1896. 
  (The 
  Macmillan 
  

   Co.) 
  — 
  The 
  author 
  has 
  presented 
  in 
  brief 
  compass 
  and 
  in 
  a 
  clear 
  

   and 
  lucid 
  manner 
  the 
  principal 
  facts 
  of 
  our 
  present 
  knowledge 
  of 
  

   the 
  cell 
  ; 
  its 
  morphology, 
  chemistry, 
  physiology 
  and 
  development. 
  

   Without 
  entering 
  into 
  so 
  full 
  an 
  exposition 
  of 
  the 
  theory 
  of 
  the 
  

   cell 
  as 
  is 
  given 
  by 
  Hertwig, 
  the 
  chief 
  points 
  in 
  its 
  history 
  are 
  

   given. 
  No 
  endeavor 
  is 
  made 
  to 
  give 
  an 
  exhaustive 
  account 
  of 
  

   the 
  cell, 
  but 
  rather 
  the 
  attempt 
  is 
  made 
  to 
  consider, 
  within 
  

   moderate 
  limits, 
  those 
  features 
  of 
  the 
  cell 
  that 
  seem 
  more 
  import- 
  

   ant 
  and 
  suggestive 
  to 
  the 
  student 
  of 
  development. 
  The 
  omis- 
  

   sions 
  are 
  particularly 
  noticeable 
  on 
  the 
  botanical 
  side 
  of 
  the 
  sub- 
  

   ject. 
  The 
  book 
  is 
  fully 
  illustrated 
  by 
  some 
  original 
  figures, 
  and 
  

   by 
  a 
  large 
  number 
  of 
  reproductions 
  of 
  the 
  classic 
  figures 
  which 
  

   have 
  been 
  produced 
  by 
  the 
  many 
  workers 
  in 
  this 
  branch 
  of 
  

   biology. 
  Each 
  chapter 
  is 
  provided 
  with 
  an 
  ample 
  list 
  of 
  the 
  liter- 
  

   ature 
  in 
  which 
  the 
  subjects 
  discussed 
  are 
  elaborated. 
  

  

  In 
  the 
  last 
  chapter 
  the 
  chief 
  theories 
  of 
  inheritance 
  and 
  devel- 
  

   opment 
  are 
  defined 
  and 
  discussed. 
  

  

  In 
  reply 
  to 
  the 
  question, 
  "W 
  T 
  hat 
  is 
  the 
  nature 
  of 
  the 
  germ- 
  

   plasm 
  and 
  how 
  has 
  it 
  been 
  acquired 
  ?" 
  Prof 
  . 
  Wilson 
  takes 
  an 
  

   agnostic 
  position. 
  He 
  says, 
  "The 
  truth 
  is 
  that 
  an 
  explanation 
  of 
  

  

  