﻿78 
  Scientific 
  Intelligence. 
  

  

  passes 
  to 
  a 
  description 
  of 
  certain 
  orders. 
  It 
  is 
  not 
  easy 
  to 
  see 
  

   the 
  principle 
  which 
  guided 
  him 
  in 
  the 
  choice 
  of 
  subjects 
  ; 
  in 
  fact, 
  

   it 
  seems 
  as 
  if 
  hardly 
  any 
  principle 
  at 
  all 
  had 
  been 
  followed, 
  but 
  

   leaving 
  this 
  aside, 
  it 
  must 
  be 
  stated 
  that 
  a 
  great 
  amount 
  of 
  useful 
  

   material 
  has 
  been 
  brought 
  together, 
  and 
  in 
  such 
  form 
  as 
  to 
  be 
  

   readily 
  utilizable 
  by 
  a 
  teacher. 
  The 
  work 
  is 
  a 
  convenient 
  hand- 
  

   book 
  of 
  Economic 
  Botany. 
  There 
  are 
  some 
  unfortunate 
  omis- 
  

   sions, 
  but, 
  on 
  the 
  whole, 
  there 
  is 
  a 
  larger 
  mass 
  of 
  well-arranged 
  

   facts 
  made 
  ready 
  for 
  the 
  hand 
  of 
  the 
  teacher 
  than 
  we 
  remember 
  

   to 
  have 
  seen 
  in 
  any 
  English 
  treatise 
  on 
  the 
  subject. 
  The 
  name 
  

   of 
  the 
  valuable 
  work 
  seems 
  to 
  us 
  a 
  misnomer. 
  Certainly 
  it 
  does 
  

   not 
  suggest 
  to 
  instructors 
  that 
  in 
  these 
  pages 
  they 
  can 
  find 
  the 
  

   information 
  regarding 
  useful 
  plants, 
  in 
  search 
  of 
  which 
  they 
  range 
  

   through 
  cyclopedias 
  of 
  every 
  sort. 
  G. 
  l. 
  g. 
  

  

  8. 
  Pflanzen- 
  Teratologic, 
  systematisch 
  geordnet. 
  Dr. 
  O. 
  Penzig, 
  

   Genoa, 
  1890, 
  and 
  1894. 
  — 
  The 
  first 
  volume 
  of 
  Professor 
  Penzig's 
  

   masterly 
  work, 
  comprising 
  the 
  polypetalous 
  dicotyledons, 
  was 
  

   published 
  four 
  years 
  ago 
  ; 
  the 
  concluding 
  volume, 
  in 
  which 
  are 
  

   considered 
  all 
  the 
  other 
  groups 
  of 
  plants 
  in 
  which 
  monstrosities 
  

   have 
  been 
  thus 
  far 
  detected, 
  was 
  finished 
  in 
  June 
  of 
  this 
  year, 
  and 
  

   has 
  just 
  been 
  issued. 
  The 
  minuteness 
  of 
  Professor 
  Penzig's 
  

   search 
  for 
  recorded 
  cases 
  of 
  monstrosities 
  is 
  shown 
  by 
  references 
  

   to 
  some 
  of 
  the 
  most 
  obscure 
  sources, 
  such 
  as 
  local 
  journals 
  and 
  

   the 
  like, 
  and 
  his 
  care 
  in 
  stating 
  the 
  appearances 
  of 
  the 
  distortions 
  

   has 
  been 
  such 
  as 
  to 
  place 
  in 
  the 
  hands 
  of 
  the 
  reader 
  exact 
  and 
  

   yet 
  much 
  abbreviated 
  descriptions 
  which 
  can 
  be 
  safely 
  used 
  in 
  

   generalizations. 
  On 
  the 
  part 
  of 
  the 
  author 
  there 
  has 
  been 
  no 
  

   attempt 
  to 
  state 
  theoretical 
  views 
  in 
  connection 
  with 
  the 
  special 
  

   cases, 
  except 
  where 
  such 
  treatment 
  appears 
  absolutely 
  necessary 
  ; 
  

   but 
  he 
  gives, 
  in 
  a 
  clearly 
  written 
  preface 
  to 
  the 
  second 
  volume, 
  a 
  

   sound 
  and 
  clear 
  exposition 
  of 
  modern 
  speculations 
  in 
  regard 
  to 
  

   this 
  interesting 
  subject. 
  With 
  this 
  treatise 
  and 
  with 
  the 
  philo- 
  

   sophical 
  work 
  of 
  Dr. 
  Masters, 
  the 
  student 
  of 
  this 
  subject 
  is 
  well- 
  

   equipped. 
  G. 
  L. 
  G. 
  

  

  9. 
  Practical 
  Botany 
  for 
  Beginners 
  ; 
  by 
  F. 
  O. 
  Bower, 
  F.R.S., 
  

   Professor 
  of 
  Botany 
  in 
  the 
  University 
  of 
  Glasgow, 
  London, 
  1894, 
  

   8vo, 
  pp. 
  275. 
  — 
  With 
  the 
  caution 
  given 
  in 
  the 
  preface, 
  this 
  labora- 
  

   tory 
  manual, 
  an 
  abridgement 
  of 
  the 
  larger 
  Course 
  of 
  Practical 
  

   Instruction 
  in 
  Botany, 
  can 
  be 
  recommended 
  without 
  reserve. 
  

   The 
  caution 
  is 
  worth 
  heeding 
  in 
  many 
  quarters. 
  " 
  Type-teaching 
  

   in 
  Biological 
  Sciences 
  appears 
  at 
  present 
  to 
  be 
  inevitable 
  in 
  ele- 
  

   mentary 
  classes 
  ; 
  it 
  lies 
  chiefly 
  with 
  the 
  teacher 
  to 
  avoid 
  the 
  evils 
  

   which 
  are 
  apt 
  to 
  arise 
  from 
  it. 
  In 
  order 
  to 
  use 
  this 
  book 
  with 
  

   proper 
  effect, 
  his 
  knowledge 
  should 
  extend 
  far 
  beyond 
  the 
  area 
  of 
  

   the 
  work 
  here 
  specifically 
  described, 
  and 
  the 
  larger 
  edition 
  may 
  

   help 
  him 
  towards 
  this 
  end. 
  By 
  grasping 
  every 
  opportunity 
  of 
  

   comparison 
  of 
  the 
  type 
  selected 
  with 
  allied 
  forms 
  which 
  show 
  

   differences 
  of 
  detail, 
  he 
  will 
  then 
  be 
  able 
  to 
  guide 
  the 
  pupil 
  to 
  

   distinguish 
  essentials 
  from 
  secondary 
  details, 
  and 
  to 
  check 
  the 
  

   dangerous 
  tendency 
  of 
  beginners 
  towards 
  generalization 
  from 
  too 
  

   limited 
  an 
  area 
  of 
  fact." 
  g. 
  l. 
  g. 
  

  

  