﻿189^-] 
  BOTANICAL 
  GAZETTE, 
  

  

  213 
  

  

  the 
  grass-flower, 
  an 
  explanation 
  of 
  the 
  different 
  organs, 
  the 
  gluraes, 
  the 
  

   palet, 
  the 
  Iodides, 
  etc.; 
  furthermore 
  the 
  structure 
  of 
  the 
  seed 
  with 
  the 
  

   embryo, 
  and 
  a 
  very 
  complete 
  description 
  of 
  the 
  germination 
  itself. 
  This 
  

   is 
  so 
  much 
  more 
  important, 
  as 
  the 
  translators 
  thereby 
  have 
  defined 
  sev- 
  

   eral 
  botanical 
  terms 
  in 
  a 
  clear 
  and 
  concise 
  manner, 
  at 
  least 
  so 
  that 
  several 
  

   of 
  these 
  are 
  easily 
  to 
  be 
  used 
  also 
  in 
  descriptions 
  of 
  other 
  families. 
  The 
  

   second 
  part 
  contains 
  the 
  more 
  systematic 
  treatment 
  of 
  the 
  genera, 
  pre- 
  

   ceded 
  by 
  a 
  key 
  to 
  the 
  tribes.' 
  Diagnoses 
  have 
  also 
  been 
  given 
  to 
  not 
  less 
  

   than 
  313 
  genera, 
  which 
  is 
  an 
  increase 
  of 
  fifteen 
  genera 
  over 
  the 
  number 
  

   recorded 
  by 
  Bentham 
  and 
  Hooker. 
  It 
  is 
  also 
  a 
  good 
  improvement, 
  made 
  

   by 
  the 
  translators, 
  that 
  the 
  respective 
  number 
  of 
  each 
  genus 
  in 
  Bentham 
  

   and 
  Hooker's 
  Genera 
  Flantarum 
  has 
  been 
  inserted 
  in 
  parenthesis 
  before 
  

   the 
  generic 
  names, 
  which 
  facihtates 
  ready 
  reference 
  to 
  that 
  work 
  and 
  at 
  

  

  the 
  same 
  time 
  shows 
  the 
  diversity 
  between 
  tfie 
  systems 
  of 
  classification 
  

   adopted. 
  

  

  It 
  is 
  also 
  to 
  be 
  remarked, 
  that 
  a 
  number 
  of 
  notes 
  and 
  observations 
  

  

  have 
  been 
  added 
  to 
  the 
  translation 
  by 
  Profs. 
  Hackel 
  and 
  Scribner, 
  so 
  that 
  

  

  it 
  la 
  even 
  more 
  complete 
  than 
  the 
  original 
  work. 
  The 
  book 
  contains 
  

  

  numerous 
  good' 
  figures, 
  most 
  of 
  which 
  have 
  been 
  obtained 
  from 
  older 
  

  

  authors, 
  as 
  for 
  instance, 
  Gray, 
  Kunth, 
  Nees 
  v. 
  Esenbeek, 
  Trinius, 
  and 
  

   others. 
  

  

  But 
  while 
  an 
  attempt 
  has 
  been 
  made, 
  as 
  it 
  seems 
  successfully, 
  in 
  re- 
  

   gard 
  to 
  the 
  identification 
  of 
  the 
  genera 
  of 
  the 
  grasses 
  in 
  a 
  more 
  complete 
  

   stage 
  with 
  the 
  flowers 
  developed, 
  then 
  the 
  next 
  stage 
  should 
  be 
  to 
  teach 
  

   how 
  to 
  distinguish 
  them 
  before 
  the 
  blooming, 
  by 
  characters 
  taken 
  for 
  in 
  - 
  

   stance 
  from 
  the 
  leaves 
  or 
  rhizomes. 
  Several 
  attempts 
  have 
  already 
  been 
  

   n^ade 
  in 
  this 
  line 
  by 
  European 
  botanists, 
  and 
  with 
  great 
  success, 
  so 
  that 
  

   It 
  has 
  been 
  proved 
  that 
  in 
  many 
  cases 
  the 
  leaf 
  alone 
  is 
  sufficient, 
  when 
  

   tbe 
  question 
  is 
  to 
  distinguish 
  a 
  genus 
  or 
  even 
  a 
  species. 
  This 
  would 
  be 
  

   a 
  great 
  help 
  to 
  the 
  farmers 
  and 
  field 
  botanists, 
  but 
  at 
  the 
  same 
  time 
  of 
  

   great 
  interest 
  to 
  descriptive 
  botany, 
  in 
  adding 
  structural 
  characters 
  to 
  

   the 
  diagnoses. 
  

  

  It 
  is 
  far 
  from 
  difficult 
  to 
  find 
  characters 
  of 
  this 
  kind, 
  if 
  we 
  look 
  at 
  the 
  

   differences 
  in 
  the 
  venation 
  of 
  the 
  leaf, 
  the 
  form 
  of 
  the 
  blade, 
  the 
  ligule, 
  

   the 
  sheath, 
  whether 
  open 
  or 
  closed, 
  which 
  show 
  a 
  large 
  variation 
  even 
  

   1^ 
  the 
  same 
  genus. 
  And 
  the 
  internal 
  structure 
  oi 
  the 
  leaf, 
  examined 
  by 
  

   a 
  low 
  power 
  of 
  the 
  microscope, 
  will 
  undoubtedly 
  show 
  many 
  differences- 
  

   ■Theo. 
  Holm, 
  U. 
  S. 
  National 
  Museum. 
  

  

  A 
  new 
  school 
  text-book. 
  

  

  Does 
  the 
  frequent 
  appearance 
  of 
  new 
  text-books 
  show 
  that 
  there 
  is 
  

   still 
  a 
  want, 
  « 
  long 
  felt," 
  yet 
  not 
  " 
  met 
  " 
  ? 
  or 
  does 
  it 
  merely 
  indicate 
  that 
  

   another 
  live 
  teacher 
  has 
  a 
  plan 
  of 
  his 
  own 
  which 
  he 
  thinks 
  others 
  may 
  

   ^^llJ^fggMDr. 
  Campbeira 
  Structural 
  and 
  Systematic 
  Botany^ 
  is 
  offered 
  

  

  Big&ook'-' 
  ^''^^^A^ 
  HouGHTO.N.-Elements 
  of 
  Structural 
  and 
  S>-steinaticBota^^^^ 
  for 
  

   «" 
  schools 
  and 
  elementary 
  college 
  courses. 
  Pp. 
  ix. 
  253. 
  Ginn 
  .t 
  Co. 
  , 
  Boston, 
  ibm. 
  

  

  